tests of stockfish1.9.1 against new stockfish with a single core

[Uri Blass]

12 plies continue to beat 25 plies.

this time 1.5-0.5

Result:
---------------------------------------------------------------------------------------------
# name games wins draws losses score elo + -
1. Stockfish dev-20251122-d9fd5165 2 1 1 0 1.5 34 141 128
2. Stockfish 1.9.1 JA 64bit 2 0 1 1 0.5 -34 128 141

Cross table:
---------------------------------------------------------------------------------------------
# name score games 1 2
1. Stockfish dev-20251122-d9fd5165 1.5 2 x 1=
2. Stockfish 1.9.1 JA 64bit 0.5 2 0= x

Tech:
---------------------------------------------------------------------------------------------

Tech (average nodes, depths, time/m per move, others per game), counted for computing moves only, ignored moves with zero nodes:
# name nodes/m NPS depth/m time/m moves time
1. Stockfish dev-20251122-d9fd5165 18K 273604 12.0 0.1 105.5 6.8
2. Stockfish 1.9.1 JA 64bit 177243K 2343403 25.0 75.6 105.0 7941.7
all --- 86347K 2341634 18.5 37.8 105.3 3974.2

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.11.28"]
[Time "09:18:12"]
[Round "1"]
[Board "1"]
[White "Stockfish dev-20251122-d9fd5165"]
[Black "Stockfish 1.9.1 JA 64bit"]
[Result "1-0"]
[Termination "mate"]
[ECO "C02"]
[Opening "French"]
[TimeControl "depth: 22;depth: 12"]
[PlyCount "153"]

1.e4 {+0.3/12 1989 62529} e6 {+0.2/25 221816 483378758} 2.d4 {+0.5/12 46 6977} d5 {+0.0/25 111119 238927453}
3.e5 {+0.4/12 159 32498} c5 {-0.2/25 152041 323973882; C02: French, advance variation} 4.c3 {+0.3/12 229 52045} Qb6 {-0.2/25 90246 192605599; C02: French, advance variation}
5.Nf3 {+0.3/12 226 54661} Nc6 {-0.2/25 142703 290286867} 6.a3 {+0.3/12 220 39181} f6 {-0.5/25 206029 431012207}
7.Bd3 {+0.5/12 90 21618} fxe5 {-0.4/25 150196 308392627} 8.dxe5 {+0.6/12 115 25521} c4 {-0.4/25 119603 247295535}
9.Bc2 {+0.7/12 80 19566} g6 {-0.5/25 209285 434396442} 10.Nbd2 {+0.8/12 109 24376} Bg7 {-0.4/25 95562 198818887}
11.O-O {+0.7/12 85 23777} Nge7 {-0.4/25 60578 125744639} 12.Re1 {+1.1/12 168 40620} O-O {-0.3/25 119240 246418573}
13.a4 {+1.2/12 227 57653} Qc7 {-0.3/25 176794 364652711} 14.Qe2 {+1.2/12 32 7595} Qa5 {+0.0/25 370297 756684233}
15.h4 {+1.4/12 100 22043} Nf5 {+0.0/25 706261 1438951664} 16.h5 {+1.5/12 79 17150} Bd7 {+0.0/25 232616 487298395}
17.hxg6 {+1.6/12 122 28893} hxg6 {+0.6/25 370967 772795082} 18.Ra3 {+1.4/12 110 28111} Rac8 {+0.2/25 731470 1501628488}
19.Bb1 {+1.3/12 62 17851} Nh6 {+0.2/25 534350 1102824670} 20.b4 {+1.6/12 49 11324} Qb6 {+0.7/25 531869 1091219025}
21.a5 {+2.0/12 57 10041} Qd8 {+0.5/25 210457 446030259} 22.b5 {+2.1/12 73 12113} Ne7 {+0.4/25 297285 620102886}
23.Nf1 {+2.0/12 49 8801} Nf7 {+0.0/25 228963 469915057} 24.a6 {+1.8/12 79 13072} b6 {+0.0/25 137711 296531552}
25.Ra2 {+1.6/12 85 19959} Bxb5 {+0.0/25 113042 245413523} 26.Ba3 {+1.9/12 86 15174} Re8 {+0.0/25 49086 108087419}
27.Nd4 {+2.3/12 53 8369} Qd7 {+1.0/25 467234 1003623371} 28.f4 {+3.1/12 39 4473} Nf5 {+1.1/25 154302 338923000}
29.Qg4 {+2.7/12 123 15707} Nxd4 {+2.3/25 488162 1082419272} 30.Qxg6 {+2.6/12 60 8425} Nf5 {+2.5/25 196831 466963168}
31.g4 {+2.3/12 192 22900} Nh8 {+2.3/25 67142 159900778} 32.Qh5 {+2.3/12 21 5774} Qf7 {+2.4/25 72531 175063084}
33.Qxf7+ {+2.2/12 132 19575} Nxf7 {+2.5/25 112880 284856562} 34.gxf5 {+2.8/12 120 17906} exf5 {+2.6/25 101887 255932475}
35.Rg2 {+2.5/12 300 70734} Nh6 {+2.1/25 106945 276434290} 36.Re3 {+2.7/12 18 3703} Bc6 {+3.3/25 203748 516648253}
37.Reg3 {+2.7/12 30 7341} Rc7 {+3.1/25 84180 215506685} 38.Ne3 {+2.7/12 38 6397} d4 {+4.0/25 451433 1175781978}
39.cxd4 {+2.7/12 63 14676} Bxg2 {+4.0/25 396956 1047927056} 40.Kxg2 {+2.7/12 82 18522} b5 {+4.2/25 384572 1000711379}
41.d5 {+3.0/12 113 20291} b4 {+4.4/25 875620 2309783715} 42.Bxb4 {+3.0/12 42 9291} Rb8 {+5.3/25 133192 357446941}
43.d6 {+3.0/12 10 1300} Rc6 {+5.4/25 92466 259734529} 44.d7 {+3.3/12 50 8817} Rd8 {+5.5/25 45709 129471848}
45.Nxf5 {+3.5/12 138 30802} Rxd7 {+5.7/25 24558 75916712} 46.Ne7+ {+3.3/12 53 16246} Rxe7 {+5.7/25 8623 27366262}
47.Bxe7 {+3.4/12 22 7134} Kf7 {+5.3/25 22757 70446427} 48.Be4 {+3.4/12 32 8387} Rxa6 {+5.7/25 20520 64838557}
49.Bd6 {+3.4/12 10 1671} Bf8 {+5.8/25 24303 80151188} 50.e6+ {+4.1/12 32 7761} Kxe6 {+6.7/25 36936 129620524}
51.Bxf8 {+4.3/12 16 4806} Kf7 {+7.3/25 74053 242971350} 52.Bc5 {+4.2/12 10 3844} Ra5 {+7.8/25 262820 804687190}
53.Bd4 {+4.1/12 24 5604} Nf5 {+7.1/25 130164 394321945} 54.Bxf5 {+4.3/12 20 6377} Rxf5 {+10.1/25 39893 144155716}
55.Kf3 {+4.3/12 41 5333} a5 {+10.8/25 26742 99435344} 56.Be5 {+4.3/12 31 7812} Rh5 {+11.3/25 15880 60251268}
57.Rg7+ {+4.4/12 23 4675} Kf8 {+18.6/25 23082 86581279} 58.Rc7 {+4.3/12 26 7110} a4 {+82.8/25 10341 39565183}
59.Kg4 {+4.3/12 23 5674} Rh1 {M-18/25 144165 444439915} 60.Kf5 {+4.6/12 47 10923} Ke8 {M-16/25 19244 53616972}
61.Ke6 {+5.1/12 16 4147} Rh6+ {M-14/25 28895 82038248} 62.Bf6 {+6.1/12 10 7214} Rxf6+ {M-13/25 3695 11974412}
63.Kxf6 {+6.6/12 57 22896} a3 {M-12/25 3121 10480168} 64.Ke6 {+7.0/12 16 13425} Kd8 {M-11/25 1007 3197792}
65.Rxc4 {+11.8/12 45 56580} a2 {M-10/25 1111 4027593} 66.Rc1 {+12.1/12 10 2876} a1=R {M-8/25 432 1585997}
67.Rxa1 {+12.4/12 10 984} Kc7 {M-7/25 80 345357} 68.f5 {+11.8/12 10 3340} Kb6 {M-7/25 243 1050263}
69.f6 {+12.0/12 10 2987} Kb5 {M-6/25 238 1123427} 70.Re1 {M+12/12 10 4130} Kc4 {M-6/25 357 1446315}
71.f7 {M+11/12 10 1460} Kd3 {M-5/25 72 318993} 72.f8=Q {M+10/12 10 1160} Kd2 {M-4/25 35 135757}
73.Qb4+ {M+6/12 10 2785} Kc2 {M-4/25 95 405694} 74.Qb1+ {M+4/12 10 2710} Kd2 {M-3/25 11 24664}
75.Qc1+ {M+3/12 10 1520} Kd3 {M-2/25 10 1320} 76.Re3+ {M+2/12 10 659} Kd4 {M-1/25 10 176}
77.Qc3# {M+1/12 10 417} 1-0

[/pgn]

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.11.28"]
[Time "09:18:35"]
[Round "1"]
[Board "2"]
[White "Stockfish 1.9.1 JA 64bit"]
[Black "Stockfish dev-20251122-d9fd5165"]
[Result "1/2-1/2"]
[Termination "repetition"]
[ECO "D41"]
[Opening "QGD"]
[TimeControl "depth: 12;depth: 22"]
[PlyCount "268"]

1.Nf3 {+0.3/25 276663 596707915} d5 {+0.3/12 66 16748} 2.d4 {+0.3/25 102402 217716747} Nf6 {+0.3/12 78 21161}
3.c4 {+0.4/25 60525 133531340} e6 {+0.3/12 47 11038} 4.Nc3 {+0.3/25 254400 537943858} c5 {+0.3/12 788 7089}
5.cxd5 {+0.4/25 133742 296991301} Nxd5 {+0.3/12 76 16273; D41: QGD, Semi-Tarrasch, 5.cd} 6.e4 {+0.4/25 153802 351182282} Nxc3 {+0.3/12 147 29258}
7.bxc3 {+0.4/25 117488 268596929} cxd4 {+0.3/12 93 19772} 8.cxd4 {+0.4/25 38871 91703556} Bb4+ {+0.4/12 110 24990}
9.Bd2 {+0.5/25 22686 54201773} Bxd2+ {+0.4/12 58 11453} 10.Qxd2 {+0.5/25 40705 96064608} O-O {+0.3/12 56 9452}
11.Bc4 {+0.4/25 88489 206627143} Nc6 {+0.3/12 17 7079} 12.O-O {+0.4/25 62737 147314321} b6 {+0.5/12 384 101702}
13.a4 {+0.3/25 346846 805922369} Na5 {+0.4/12 109 35966} 14.Ba2 {+0.4/25 125381 289070248} Bd7 {+0.4/12 101 31766}
15.d5 {+0.4/25 93092 218475791} exd5 {+0.2/12 95 32406} 16.Bxd5 {+0.2/25 139484 336049656} Rc8 {+0.2/12 124 35190}
17.Nd4 {+0.5/25 230980 565179233} Nc6 {+0.2/12 341 124392} 18.Nb5 {+0.3/25 148613 374302362} Qe7 {+0.3/12 114 46914}
19.Rfc1 {+0.7/25 253563 595096711} Kh8 {+0.5/12 271 114738} 20.Rd1 {+0.9/25 165285 396641373} f5 {+0.5/12 110 42156}
21.f3 {+0.6/25 176358 423815210} Rcd8 {+0.4/12 228 94743} 22.Qc3 {+0.9/25 104538 262203278} Rc8 {+0.3/12 129 50895}
23.Qe3 {+0.4/25 148753 367555254} h6 {+0.3/12 181 72808} 24.Rab1 {+0.7/25 157045 370392093} Rcd8 {+0.2/12 129 56974}
25.Qc1 {+0.6/25 154342 372399863} Ne5 {-0.2/12 93 37642} 26.Qc7 {+0.5/25 50947 128545382} Qf6 {-0.2/12 58 27414}
27.Qxa7 {+0.3/25 222858 551506304} fxe4 {-0.0/12 70 39388} 28.Bxe4 {+0.1/25 34579 97274987} Bf5 {+0.0/12 23 7696}
29.Rxd8 {+0.0/25 18700 55156086} Rxd8 {+0.0/12 15 5039} 30.Bxf5 {+0.0/25 17357 52552870} Qxf5 {-0.0/12 237 109501}
31.Rf1 {+0.0/25 5147 16161948} Qg6 {-0.0/12 50 26884} 32.Nc3 {+0.0/25 78401 228881733} Kh7 {-0.1/12 35 17066}
33.Qb7 {+0.0/25 23078 66900251} Rd2 {-0.1/12 121 35800} 34.g3 {+0.0/25 16738 52394097} Rd4 {-0.1/12 53 23800}
35.f4 {+0.0/25 10195 31686820} Qc2 {-0.1/12 240 119369} 36.fxe5 {+0.0/25 13463 46565686} Qxc3 {+0.0/12 38 21528}
37.Qf3 {+0.0/25 2476 9218001} Qxf3 {+0.0/12 19 11527} 38.Rxf3 {+0.0/25 1117 5201384} Rxa4 {-0.1/12 17 9708}
39.Rb3 {+0.0/25 1354 6346727} Ra6 {+0.0/12 40 34759} 40.Kf2 {+0.0/25 4470 19657277} Kg6 {+0.0/12 23 11974}
41.Ke3 {+0.0/25 1526 6591303} Kf5 {+0.0/12 38 16536} 42.Kd4 {+0.0/25 967 4046357} Ke6 {+0.1/12 91 40615}
43.Rb4 {+0.0/25 473 1948903} b5 {+0.1/12 10 6118} 44.Rxb5 {+0.0/25 4897 21007693} Ra4+ {+0.1/12 10 6057}
45.Ke3 {+0.0/25 1461 6237164} Kf5 {+0.0/12 21 13818} 46.Kd3 {+0.0/25 2108 8970604} h5 {+0.0/12 38 27167}
47.e6+ {+0.2/25 8551 36996809} Kxe6 {-0.1/12 19 13830} 48.Rxh5 {+0.2/25 758 3626390} Ra3+ {-0.0/12 40 32684}
49.Ke4 {+0.4/25 4846 20693608} Kf6 {+0.1/12 40 34040} 50.Rd5 {+0.6/25 1987 8950335} Ra4+ {+0.1/12 41 33721}
51.Rd4 {+0.6/25 1215 5348370} Ra7 {+0.0/12 25 21868} 52.h4 {+0.6/25 1377 5893532} Rb7 {+0.0/12 19 14287}
53.Rd6+ {+0.8/25 4841 20712483} Kf7 {+0.0/12 19 6088} 54.g4 {+0.8/25 1752 8156925} Rb2 {+0.0/12 22 12515}
55.h5 {+0.8/25 4748 21706358} Rb4+ {+0.2/12 18 18239} 56.Kf5 {+0.8/25 687 3435874} Rb5+ {+0.1/12 10 5046}
57.Kf4 {+0.7/25 435 2150013} Rb4+ {+0.1/12 37 31419} 58.Kg3 {+0.6/25 1280 6316058} Rb3+ {+0.1/12 17 12953}
59.Kg2 {+0.6/25 819 3935722} Rb4 {+0.1/12 25 26387} 60.Kf3 {+0.6/25 1060 5206972} Kg8 {+0.0/12 15 12755}
61.Rd7 {+0.6/25 598 3009718} g6 {+0.0/12 31 23136} 62.hxg6 {+2.5/25 1197 6113509} Kf8 {-0.0/12 49 34938}
63.Kg3 {+2.5/25 397 2136253} Rb6 {+0.1/12 41 39381} 64.g7+ {+2.4/25 624 3421097} Kg8 {+0.0/12 14 5380}
65.Re7 {+2.4/25 245 1377186} Rb1 {+0.1/12 25 27243} 66.Kf4 {+1.9/25 520 2905418} Rf1+ {+0.1/12 27 15607}
67.Kg5 {+1.9/25 194 965292} Kh7 {+0.0/12 10 8619} 68.g8=N+ {+2.6/25 705 3411927} Kxg8 {+0.0/12 30 24508}
69.Kg6 {+2.6/25 128 621395} Rf8 {+0.0/12 10 4518} 70.Ra7 {+2.6/25 591 2871842} Rd8 {+0.0/12 11 12029}
71.Ra6 {+2.6/25 62 292055} Rc8 {+0.0/12 10 3777} 72.Rd6 {+2.6/25 134 631043} Rb8 {+0.0/12 10 9460}
73.Rc6 {+2.4/25 188 914521} Rf8 {+0.0/12 10 4276} 74.g5 {+2.5/25 149 785948} Rb8 {+0.0/12 10 5343}
75.Kh6 {+2.3/25 63 318000} Rf8 {+0.0/12 10 4118} 76.Ra6 {+2.1/25 244 1286696} Kh8 {+0.0/12 10 3018}
77.Rd6 {+1.9/25 405 2110035} Kg8 {+0.0/12 10 4691} 78.Kg6 {+1.9/25 132 660425} Rb8 {+0.0/12 10 3345}
79.Ra6 {+1.8/25 187 941997} Re8 {-0.0/12 10 5873} 80.Kh6 {+1.6/25 250 1332737} Kh8 {+0.0/12 10 1855}
81.Ra7 {+1.6/25 227 1100159} Kg8 {+0.0/12 10 1758} 82.g6 {+1.6/25 60 297956} Rc8 {+0.0/12 10 1487}
83.Rg7+ {+1.6/25 61 351064} Kh8 {+0.0/12 10 753} 84.Rh7+ {+1.6/25 61 292314} Kg8 {+0.0/12 10 1098}
85.Ra7 {+1.6/25 61 329123} Rb8 {+0.0/12 10 1559} 86.Rg7+ {+1.6/25 87 453397} Kh8 {+0.0/12 10 1917}
87.Rh7+ {+1.6/25 35 153072} Kg8 {+0.0/12 10 3282} 88.Rc7 {+1.6/25 43 216746} Re8 {+0.0/12 10 5103}
89.Rd7 {+1.6/25 50 276246} Kh8 {+0.0/12 10 2263} 90.Rh7+ {+1.6/25 55 292417} Kg8 {+0.0/12 10 1904}
91.Rg7+ {+1.6/25 76 430155} Kh8 {+0.0/12 10 375} 92.Ra7 {+1.6/25 60 327117} Kg8 {+0.0/12 10 1484}
93.Ra6 {+1.6/25 48 255742} Rb8 {+0.0/12 10 2645} 94.Re6 {+1.6/25 51 262570} Kh8 {+0.0/12 10 1793}
95.Rc6 {+1.6/25 54 292665} Kg8 {+0.0/12 10 2868} 96.Rd6 {+1.6/25 92 488606} Ra8 {+0.0/12 10 6160}
97.Rb6 {+1.5/25 56 290208} Rc8 {+0.0/12 10 4859} 98.Re6 {+1.6/25 111 633817} Kh8 {+0.0/12 11 9192}
99.Re1 {+1.4/25 207 1152424} Kg8 {+0.0/12 10 2865} 100.Rb1 {+1.5/25 65 376609} Ra8 {+0.0/12 10 7385}
101.Rb7 {+1.5/25 58 343429} Rc8 {+0.0/12 10 1890} 102.Rb6 {+1.6/25 100 595002} Rd8 {+0.0/12 10 3059}
103.Rb4 {+1.6/25 65 320596} Kh8 {+0.0/12 10 1789} 104.Rb2 {+2.6/25 45 230461} Rc8 {+0.0/12 10 2542}
105.Rd2 {+1.5/25 91 519823} Rb8 {+0.0/12 10 1907} 106.Rc2 {+1.5/25 70 415360} Kg8 {+0.0/12 10 1861}
107.Rc6 {+1.6/25 85 479133} Re8 {+0.0/12 10 3092} 108.Rc7 {+1.6/25 86 468237} Ra8 {+0.0/12 10 1654}
109.Rg7+ {+1.5/25 117 656440} Kh8 {+0.0/12 10 1020} 110.Rh7+ {+1.5/25 63 332924} Kg8 {+0.0/12 10 971}
111.Rd7 {+1.6/25 50 253430} Re8 {+0.0/12 10 1861} 112.Rd4 {+1.5/25 60 319238} Kh8 {+0.0/12 10 2440}
113.Rd3 {+1.5/25 74 407328} Rc8 {+0.0/12 10 2335} 114.Re3 {+1.4/25 69 415473} Kg8 {+0.0/12 10 1951}
115.Re1 {+1.5/25 83 453990} Rd8 {+0.0/12 10 1280} 116.Re6 {+1.6/25 200 1163620} Kh8 {+0.0/12 10 1613}
117.Ra6 {+1.5/25 120 710884} Rc8 {+0.0/12 10 3351} 118.Ra5 {+1.5/25 57 281194} Kg8 {+0.0/12 10 2875}
119.Ra1 {+1.5/25 46 266147} Rd8 {+0.0/12 10 1922} 120.Ra2 {+0.0/25 114 575783} Kh8 {+0.0/12 10 1794}
121.Ra4 {+0.0/25 81 444404} Kg8 {+0.0/12 10 1356} 122.g7 {+0.0/25 82 485518} Rd6+ {-0.0/12 10 6591}
123.Kg5 {+0.0/25 13 66691} Kxg7 {+0.0/12 10 7787} 124.Ra1 {+0.0/25 72 467511} Rg6+ {+0.0/12 16 10225}
125.Kh4 {+0.0/25 84 521313} Rb6 {+0.0/12 15 16062} 126.Rc1 {+0.0/25 98 673513} Kh6 {-0.0/12 34 32418}
127.Ra1 {+0.0/25 14 91816} Rd6 {+0.0/12 13 13158} 128.Rb1 {+0.0/25 73 493546} Rd8 {+0.0/12 30 32139}
129.Ra1 {+0.0/25 72 436872} Kg6 {+0.0/12 22 6233} 130.Rb1 {+0.0/25 56 368233} Kf6 {+0.0/12 31 30507}
131.Ra1 {+0.0/25 41 263189} Rd7 {+0.0/12 15 14001} 132.Rb1 {+0.0/25 58 405732} Rd8 {+0.0/12 34 35234}
133.Ra1 {+0.0/25 10 10633} Rd7 {+0.0/12 28 27557} 134.Rb1 {+0.0/25 10 7570} Rd8 {+0.0/12 10 947}
1/2-1/2

[/pgn]

[Jouni]

Isn't all fixed depth / fixed nodes tests totally useless and waste of time

[Uri Blass]

Isn't all fixed depth / fixed nodes tests totally useless and waste of time

I do not think it is a waste of time because the target is not to find which engine is stronger.

There is a problem with depth 26 of stockfish1.9.1 because the search explode in some positions(it already used one hour or something like that for some moves to finish depth 26 but in the last move it refuse to move even with more than 10 hours and more than 115,000M nodes).

Stockfish1.9.1 has the following output and I do not know when it is going to finish iteration 26 if I do not stop it and the position is relatively simple and do not have a lot of pieces:



Stockfish 1.9.1 JA 64bit
[d]8/8/1r1r4/2Q2B1P/6PK/k7/8/8 b - - 1 96

depth: 26 score: -29.81 time: 38350106 nodes: 115231283273 pv: Kb3 g5 Rbc6 Qb5+ Kc3
depth: 25 score: -93.36 time: 3133977 nodes: 9835044732 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R6b5 Qc2+ Ka3 g7 Rb3+ Kh4 R5b4+ Bg4 Rb8 g8=R Rxg8 Qxb3+ Kxb3 Be6+ Kc3 Bxg8 Kb2 h6 Kc3 h7 Kb4 h8=Q Kc5 Kg3 Kb4 Kf3 Kc5 Ke4
depth: 24 score: -107.35 time: 137877 nodes: 517776572 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 Kb2 g7 Rb3+ Kh4 R6b4+ Bg4 Rb8 Qe5+ Kc2 Qd4 Kc1 Qd1+ Kb2 Qd2+ Ka3 Qd6+ R3b4 Qc5 Re8 Qa5+ Ra4 Qxa4+ Kxa4 Bd7+ Ka5 Bxe8 Kb6 Bc6 Kc7 g8=Q Kxc6 h6 Kc7 h7 Kd6 Qg6+ Kc5 Qf5+ Kb6 h8=Q Kc6 Qg4
depth: 23 score: -93.46 time: 17763 nodes: 69276053 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb8 Qxb5 Rxb5 g8=Q Rc5 Qf8 Kb4 Qxc5+ Kxc5 h6 Kd4 h7 Ke5 Kg4 Kd4 h8=Q+ Kc5 Qc3+ Kd6 Kf4 Ke7 Ke5
depth: 22 score: -93.36 time: 14240 nodes: 53806207 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb8 Qxb5 Rxb5 g8=Q Rc5 Qf8 Kb4 Qxc5+ Kxc5 h6 Kd4 h7 Ke5 Kg4 Kd4 h8=Q+ Kc5 Qc3+ Kd6 Kf4 Ke7 Ke5
depth: 21 score: -93.26 time: 12389 nodes: 45971975 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb8 Qxb5 Rxb5 g8=Q Rc5 Qf8 Kb4 Qxc5+ Kxc5 h6 Kd4 h7 Ke5 Kg4 Kd4 h8=Q+ Kc5 Qc3+ Kb5 Kf4 Kb6 Ke4 Kb5 Kd4
depth: 20 score: -93.16 time: 11876 nodes: 43523824 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb8 Qxb5 Rxb5 g8=Q Rc5 Qf8 Kb4 Qxc5+ Kxc5 h6 Kd4 h7 Ke5 Kg4 Kd4 h8=Q+ Kc5 Qc3+ Kb5 Kf4 Kb6 Ke4 Kb5 Kd4
depth: 19 score: -93.26 time: 11318 nodes: 41143883 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb8 Qxb5 Rxb5 g8=Q Rc5 Qf8 Kb4 Qxc5+ Kxc5 h6 Kd4 h7 Ke5 Kg4 Kd4 h8=Q+ Kc5 Qc3+ Kb6 Kf4 Kb5 Ke4 Kb6 Kd4
depth: 18 score: -34.42 time: 5160 nodes: 17666768 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb4 h6 Rb8 g7 Rxf5 Qe4+ Ka3 Qxf5 Rb3+ Kh4 Rb4+ Kg5 Rb3 g8=Q Rg3+ Qg4 Re3 h7 Re5+ Kf6 Re3 h8=Q Rc3 Qd4
depth: 17 score: -34.50 time: 3692 nodes: 12462918 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb4 h6 Rc6 g7 Rbc5 g8=Q Rc3 Qb8+ Ka3 Qf8+ Kb3 Bd3 R3c5 h7 Rh5+ Kg2 Rh4 Be4+ Rc3 Qxc3+ Ka4 h8=Q Rxe4
depth: 16 score: -25.49 time: 2598 nodes: 8684931 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb4 h6 Rc6 g7 Rbc5 g8=Q Rc3 Qb8+ Ka3 Qf8+ Kb3 Bd3 R3c5 h7 Rh5+ Kg2 Rh4 Bb5+ Kc2 h8=Q Rxh8 Qxh8
depth: 15 score: -33.81 time: 2211 nodes: 7362307 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb4 g7 Rb8 h6 Rxf5 Qe4+ Ka3 Qxf5 Rb3+ Kh4 Rb4+ Kg5 Rb3 g8=Q Rg3+ Qg4 Re3 h7 Re5+ Kf6 Re3 h8=Q Rc3
depth: 14 score: -24.72 time: 1091 nodes: 3486080 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R6b5 Qc2+ Ka3 g7 Rb8 h6 R4b7 h7 Rxg7 Qc5+ Kb3 Qd5+ Ka4 Qd4+ Rb4 Qa1+ Kb5 Bd3+ Kc6 h8=Q Rgg4 Qa6+ Kd7 Qhc8+ Ke7 Qxg4
depth: 13 score: -21.81 time: 551 nodes: 1688427 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R6b5 Qc2+ Ka3 g7 Rb2 Qc1 R5b3+ Kh4 Ka2 Qf4 Rg2 Bg4 Rgg3 g8=Q Rxg4+ Kxg4
depth: 12 score: -15.59 time: 155 nodes: 433834 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka1 g7 Rb8 g8=B Rb3+ Bxb3 Rxb3+ Kg4 Rb4+ Kg5 Rb8 Qe5+ Rb2 h6
depth: 11 score: -13.85 time: 76 nodes: 194919 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb3+ Kh4 Rb8 h6 R3b7 h7 Rxg7 Qe3+ Ka4 Bc2+ Kb5 Qe5+ Kc4 Qxb8
depth: 10 score: -12.96 time: 44 nodes: 108351 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb3+ Kh4 Rb8 h6 R3b4+ Kg5 Rg8 Qc2
depth: 9 score: -12.28 time: 33 nodes: 78072 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Ka3 g7 Rb3+ Kh4 Rb8 h6 Rg8 Qe7+ Kb2 Qe2+ Ka3
depth: 8 score: -12.36 time: 28 nodes: 68697 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb2 Qe2+ Kb3 g7 Rb8 g8=Q+ Rxg8 Qxb5+ Kc3 Qd3+ Kb4
depth: 7 score: -11.03 time: 8 nodes: 19233 pv: Kb3 g5 Rb4+ Kh3 Rdb6 g6 R4b5 Qe3+ Kb4 h6 Rd6 Kg4
depth: 6 score: -9.73 time: 2 nodes: 5013 pv: Kb3 g5 Rb4+ Kh3 Rbb6 g6 Rdc6 Qd4
depth: 5 score: -9.73 time: 2 nodes: 3308 pv: Kb3 g5 Rb4+ Kh3 Rbb6 g6 Rdc6
depth: 4 score: -9.21 time: 1 nodes: 1415 pv: Kb3 Bc2+ Kb2 g5 Rbc6 Qe5+ Kxc2 g6 Kd2
depth: 3 score: -9.17 time: 1 nodes: 463 pv: Kb3 Bc2+ Kb2 g5 Rbc6 Qe5+ Kxc2 g6 Kd2
depth: 2 score: -9.05 time: 1 nodes: 226 pv: Kb3 g5 Rb4+ Kg3 Rdb6
depth: 1 score: -8.08 time: 0 nodes: 142 pv: Kb3

[Uri Blass]

In the second game the search did not explode and 1.9.1 got a draw with white.
I think I can adjudicate the first game as a loss for the 26 plies that refuse to play

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.11.29"]
[Time "11:19:31"]
[Round "1"]
[Board "2"]
[White "Stockfish 1.9.1 JA 64bit"]
[Black "Stockfish dev-20251122-d9fd5165"]
[Result "1/2-1/2"]
[Termination "repetition"]
[ECO "D41"]
[Opening "QGD"]
[TimeControl "depth: 12;depth: 22"]
[PlyCount "122"]

1.Nf3 {+0.2/26 347224 742636595} d5 {+0.3/12 29 16748} 2.d4 {+0.4/26 123188 264603857} Nf6 {+0.3/12 40 21161}
3.c4 {+0.3/26 118278 249645994} e6 {+0.3/12 24 11038} 4.Nc3 {+0.2/26 254729 518958966} c5 {+0.3/12 16 7089}
5.cxd5 {+0.2/26 506752 1128366570} Nxd5 {+0.3/12 39 16273; D41: QGD, Semi-Tarrasch, 5.cd} 6.e4 {+0.5/26 202094 462428165} Nxc3 {+0.3/12 68 29258}
7.bxc3 {+0.5/26 146395 339083119} cxd4 {+0.3/12 43 19772} 8.cxd4 {+0.4/26 200216 473239052} Bb4+ {+0.4/12 58 24990}
9.Bd2 {+0.4/26 74623 174530229} Bxd2+ {+0.4/12 30 11453} 10.Qxd2 {+0.5/26 66474 158706494} O-O {+0.3/12 21 9452}
11.Rd1 {+0.3/26 180142 423252899} b6 {+0.2/12 45 19392} 12.d5 {+0.3/26 86689 210352532} exd5 {+0.3/12 42 19626}
13.Bc4 {+0.4/26 40166 94457364} Bb7 {+0.3/12 45 15984} 14.O-O {+0.3/26 43598 106742384} Nd7 {+0.3/12 44 18799}
15.Bxd5 {+0.2/26 91994 233358238} Nc5 {+0.2/12 57 26045} 16.Qf4 {+0.2/26 29416 80122798} Qb8 {+0.2/12 124 56537}
17.Qf5 {+0.2/26 27839 78601796} Qc8 {+0.2/12 55 26232} 18.Nd4 {+0.0/26 40940 121619396} Qxf5 {-0.1/12 10 5156}
19.Nxf5 {+0.1/26 32427 99370030} Rfd8 {-0.0/12 18 10214} 20.Bxb7 {+0.1/26 12770 40532837} Nxb7 {+0.0/12 34 19096}
21.f3 {+0.2/26 10319 34361929} Kf8 {+0.0/12 10 6698} 22.Kf2 {+0.1/26 7325 23795300} Rac8 {-0.1/12 29 16652}
23.Ne3 {+0.0/26 36894 118135406} Rc3 {-0.2/12 31 18623} 24.Rxd8+ {+0.0/26 43574 141134657} Nxd8 {-0.0/12 82 45104}
25.Rd1 {+0.0/26 13815 44256065} Ne6 {+0.1/12 63 36250} 26.Rd7 {+0.1/26 27051 87304190} Ra3 {+0.1/12 37 20074}
27.Rd2 {+0.1/26 24923 80878946} b5 {-0.3/12 73 39606} 28.Nd5 {+0.1/26 54818 171309303} g6 {-0.3/12 39 21631}
29.Rc2 {+0.1/26 106325 328214969} a5 {-0.4/12 35 20460} 30.Rd2 {+0.0/26 11670 37112675} h5 {-0.4/12 34 20013}
31.h4 {+0.0/26 9186 29809769} b4 {-0.4/12 31 18347} 32.Ke2 {+0.0/26 3156 10749683} Kg7 {-0.3/12 67 36368}
33.Kf2 {+0.0/26 918 3232696} Kh6 {-0.4/12 54 31047} 34.Rc2 {+0.0/26 2291 7428403} Rd3 {-0.4/12 10 4414}
35.Ke2 {+0.0/26 1683 5656115} Ra3 {-0.4/12 10 2520} 36.Kf2 {+0.0/26 332 1074813} g5 {-0.4/12 41 22486}
37.Kg3 {+0.0/26 18762 59485226} g4 {-0.5/12 28 16826} 38.Rd2 {+0.0/26 41134 128715103} Kg7 {-0.4/12 55 33014}
39.Kf2 {-0.2/26 32001 102766364} f6 {-0.5/12 40 25321} 40.Ke2 {+0.0/26 35759 114956229} Kf7 {-0.4/12 78 51160}
41.Kf2 {+0.0/26 6952 22226347} Kg6 {-0.3/12 49 35294} 42.Ne7+ {+0.0/26 11705 37862648} Kf7 {-0.3/12 16 9944}
43.Nd5 {+0.0/26 1523 4927814} Kg7 {-0.3/12 44 27762} 44.Ke2 {+0.0/26 1357 4496993} Kg6 {-0.3/12 36 24722}
45.Ne7+ {-0.0/26 24009 78385822} Kf7 {-0.3/12 36 22883} 46.Nd5 {+0.0/26 5750 19350435} g3 {-0.3/12 24 20303}
47.Ke1 {+0.0/26 32727 106831457} f5 {-0.3/12 110 71141} 48.exf5 {+0.2/26 32577 107726266} Ng7 {-0.0/12 70 42703}
49.f6 {+0.2/26 8202 27877628} Ne6 {-0.1/12 10 3813} 50.Kd1 {+0.4/26 26125 87192680} a4 {-0.0/12 36 24678}
51.Nxb4 {+0.2/26 28553 93346997} Nf4 {-0.0/12 21 13337} 52.Ke1 {+0.0/26 10223 37524232} Kxf6 {-0.0/12 27 20026}
53.Rc2 {+0.0/26 5803 20622974} Ke5 {+0.0/12 16 11150} 54.Nc6+ {+0.0/26 3667 12667160} Kd5 {+0.0/12 10 4277}
55.Kf1 {+0.0/26 1324 4810664} Re3 {+0.0/12 10 1853} 56.Nb4+ {+0.0/26 626 2371416} Kd4 {+0.0/12 10 431}
57.Rc7 {+0.0/26 1852 6548725} Re2 {-0.0/12 35 26288} 58.Nc2+ {+0.0/26 2644 9742089} Kd5 {+0.0/12 49 35988}
59.Nb4+ {+0.0/26 530 2016972} Kd4 {+0.0/12 10 902} 60.Nc2+ {+0.0/26 833 3258117} Kd3 {+0.0/12 10 188}
61.Nb4+ {+0.0/26 84 338851} Kd4 {+0.0/12 10 36} 1/2-1/2


[/pgn]

[Uri Blass]

Result:
---------------------------------------------------------------------------------------------
# name games wins draws losses score elo + -
1. Stockfish dev-20251122-d9fd5165 2 1 1 0 1.5 34 141 128
2. Stockfish 1.9.1 JA 64bit 2 0 1 1 0.5 -34 128 141

Cross table:
---------------------------------------------------------------------------------------------
# name score games 1 2
1. Stockfish dev-20251122-d9fd5165 1.5 2 x 1=
2. Stockfish 1.9.1 JA 64bit 0.5 2 0= x

Tech:
---------------------------------------------------------------------------------------------

Tech (average nodes, depths, time/m per move, others per game), counted for computing moves only, ignored moves with zero nodes:
# name nodes/m NPS depth/m time/m moves time
1. Stockfish dev-20251122-d9fd5165 14K 76417 12.0 0.2 78.5 14.2
2. Stockfish 1.9.1 JA 64bit 1142060K 3073710 26.0 371.6 78.0 28981.5
all --- 555871K 3072242 19.0 185.3 78.3 14497.8


adjudicated game 1 and here is the game

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.11.29"]
[Time "11:57:26"]
[Round "1"]
[Board "1"]
[White "Stockfish dev-20251122-d9fd5165"]
[Black "Stockfish 1.9.1 JA 64bit"]
[Result "1-0"]
[Termination "adjudication by human"]
[ECO "C02"]
[Opening "French"]
[TimeControl "depth: 22;depth: 12"]
[PlyCount "191"]

1.e4 {+0.3/12 105 62529} e6 {+0.1/26 326507 699429016} 2.d4 {+0.5/12 18 6977} d5 {+0.0/26 179031 381450062}
3.e5 {+0.4/12 70 32498} c5 {-0.3/26 225408 456424393; C02: French, advance variation} 4.c3 {+0.3/12 136 52045} Nc6 {-0.1/26 134092 291371953}
5.Nf3 {+0.3/12 31 11774} Qb6 {-0.2/26 201025 445285276; C02: French, advance, Paulsen attack} 6.Be2 {+0.3/12 95 31451} Nh6 {-0.3/26 198192 434788589}
7.Bxh6 {+0.6/12 144 54002} Qxb2 {-0.4/26 152046 364185616} 8.Be3 {+1.7/12 34 11750} Qxa1 {+0.6/26 79278 194757927}
9.Qc2 {+2.0/12 15 5173} cxd4 {+0.5/26 61031 151372059} 10.Nxd4 {+2.5/12 77 27924} Ba3 {+0.9/26 123138 303096224}
11.Nb5 {+2.4/12 82 25924} Bb2 {+1.0/26 268175 623997250} 12.Nd6+ {+2.4/12 107 37933} Kd7 {+1.8/26 607293 1412367930}
13.O-O {+2.7/12 43 14535} Qxa2 {+2.9/26 1192957 2683838086} 14.Bc1 {+3.1/12 30 8282} f6 {+2.9/26 1124601 2383844213}
15.Bxb2 {+3.4/12 24 4339} fxe5 {+4.1/26 1557589 3581301103} 16.Nd2 {+3.7/12 47 7349} Kxd6 {+3.9/26 1003603 2490317474}
17.Ra1 {+3.5/12 153 26535} Qxa1+ {+4.0/26 347956 875672676} 18.Bxa1 {+3.5/12 40 7741} Bd7 {+4.1/26 965000 2437492477}
19.c4 {+3.7/12 21 3946} Raf8 {+4.1/26 729860 1830728335} 20.Bb2 {+3.9/12 36 5823} Nd4 {+4.8/26 2281543 5964632842}
21.Bxd4 {+4.8/12 46 5624} exd4 {+5.1/26 1800042 4872807105} 22.Qb2 {+4.3/12 53 4226} Kc7 {+5.1/26 1502992 4148184260}
23.Qxd4 {+3.9/12 81 8985} Rhg8 {+5.1/26 2341484 6485331261} 24.Nf3 {+4.7/12 85 6274} Kb8 {+4.5/26 178160 494584650}
25.Ne5 {+4.8/12 54 5555} Rd8 {+4.8/26 132556 370266820} 26.h4 {+4.4/12 87 7711} Bc8 {+4.6/26 827998 2317469800}
27.c5 {+4.7/12 61 4404} Ka8 {+6.5/26 755218 2012823065} 28.c6 {+5.0/12 69 5056} g6 {+7.0/26 351091 944034837}
29.Bb5 {+5.4/12 47 4775} bxc6 {+7.0/26 33821 105319823} 30.Nxc6 {+5.2/12 49 4664} Rd7 {+7.4/26 9103 32442110}
31.Na5 {+5.1/12 32 3197} Rc7 {+7.7/26 12416 46702761} 32.Qe5 {+5.4/12 25 3329} Rc1+ {+8.6/26 125496 444400852}
33.Kh2 {+5.6/12 388 2704} Bb7 {+9.3/26 54825 195503163} 34.Qxe6 {+5.5/12 72 10365} Rb8 {+9.4/26 56067 229652659}
35.Nxb7 {+5.4/12 27 3649} Kxb7 {+9.1/26 58872 236215685} 36.Qxd5+ {+5.6/12 45 5325} Kb6 {+9.4/26 37735 151866864}
37.Bd3 {+5.5/12 41 6620} Rc6 {+9.2/26 112228 444392988} 38.Qb5+ {+5.8/12 16 3080} Kc7 {+9.6/26 32021 134679943}
39.Qe5+ {+5.6/12 30 4337} Rd6 {+10.1/26 47055 205121507} 40.g3 {+5.5/12 28 4429} Rbb6 {+7.2/26 179347 636099333}
41.Bc2 {+5.0/12 28 4795} a6 {+7.2/26 202122 731278579} 42.Qg7+ {+5.0/12 45 4200} Rd7 {+7.1/26 29551 103754621}
43.Qe5+ {+5.1/12 32 5569} Rdd6 {+0.0/26 21 17800} 44.Ba4 {+5.1/12 34 4432} h5 {+6.5/26 40049 144507513}
45.Kh1 {+5.1/12 27 4160} Kd8 {+5.9/26 17839 67139145} 46.Qg7 {+4.8/12 12 3682} Kc8 {+6.5/26 24312 91836241}
47.Qf8+ {+4.9/12 23 4561} Kc7 {+6.5/26 29612 111589763} 48.Kg2 {+4.7/12 25 4773} Kb7 {+6.4/26 11172 44134867}
49.Qg7+ {+4.9/12 29 5347} Kc8 {+6.4/26 11239 44750770} 50.Qf8+ {+4.8/12 469 4278} Kb7 {+0.0/26 12 2476}
51.Qg7+ {+4.7/12 464 4782} Kc8 {+0.0/26 12 1549} 52.Qh6 {+4.8/12 511 5936} Kc7 {+6.6/26 13938 50022728}
53.Qf4 {+4.7/12 349 5972} Kd8 {+6.3/26 13726 54323207} 54.Qe5 {+4.8/12 21 6611} Kc7 {+6.8/26 31364 112087890}
55.Kh3 {+4.5/12 42 9665} Kd8 {+6.8/26 21227 80758320} 56.Qc3 {+4.7/12 19 7618} Rf6 {+6.7/26 10831 41853279}
57.f3 {+4.5/12 18 4408} Rbd6 {+6.8/26 54405 194544883} 58.Bb3 {+4.5/12 15 4552} Rc6 {+6.8/26 19471 75268262}
59.Qe3 {+4.5/12 23 3584} Rb6 {+6.9/26 46488 177979818} 60.Qc5 {+4.6/12 18 4605} Kd7 {+7.0/26 30030 111964045}
61.Ba2 {+4.6/12 29 6153} Rfd6 {+6.8/26 36733 123340556} 62.Qc3 {+4.3/12 37 5462} Kd8 {+6.8/26 31112 109128880}
63.f4 {+4.5/12 31 7728} Rbc6 {+6.8/26 21609 77111243} 64.Bc4 {+4.2/12 17 4068} Kd7 {+6.9/26 22113 81170918}
65.Qg7+ {+4.3/12 33 4837} Kd8 {+6.9/26 18135 69502047} 66.Bf7 {+4.3/12 22 5322} Rb6 {+7.1/26 21838 84454864}
67.f5 {+4.5/12 23 4848} gxf5 {+8.9/26 996181 3264698233} 68.Qf8+ {+4.4/12 543 4123} Kd7 {+9.6/26 274952 940871473}
69.Be8+ {+4.5/12 108 4161} Kc7 {+9.5/26 605558 2165300414} 70.Qxf5 {+4.2/12 101 4085} Rf6 {+10.0/26 63795 238688174}
71.Qh7+ {+4.4/12 65 4306} Kd6 {+10.2/26 339854 1207585466} 72.Qd7+ {+4.6/12 149 5009} Kc5 {+11.2/26 1284661 4531185876}
73.Bf7 {+4.5/12 146 8130} Rbd6 {+11.6/26 259206 937879257} 74.Qa7+ {+4.6/12 119 9169} Kb4 {+11.3/26 358377 1282890187}
75.Be8 {+4.6/12 64 5622} Rd2 {+10.5/26 1594551 5630054839} 76.Qb8+ {+4.6/12 85 4836} Kc4 {+11.4/26 126979 519640199}
77.Qc7+ {+4.7/12 59 4544} Kb4 {+11.6/26 320287 1241032621} 78.Qe7+ {+4.7/12 65 6502} Rfd6 {+10.2/26 675369 2364155942}
79.Bf7 {+4.5/12 36 3698} R2d4 {+11.6/26 810938 2842896724} 80.Qc7 {+4.6/12 84 5209} Rf6 {+10.7/26 547865 1785309858}
81.Qb8+ {+5.0/12 325 27100} Kc3 {+14.2/26 518956 1778570074} 82.Qb3+ {+5.0/12 79 4387} Kd2 {+16.1/26 404206 1464006093}
83.Qb2+ {+5.1/12 100 9139} Kd3 {+15.9/26 637440 2356474860} 84.Qb3+ {+5.1/12 64 8143} Kd2 {+0.0/26 10 16839}
85.Bxh5 {+5.0/12 62 8243} Rdd6 {+15.6/26 848183 2737953161} 86.Bg4 {+5.1/12 627 5529} Rb6 {+13.4/26 1146072 3888298904}
87.Qd1+ {+5.0/12 3391 9250} Kc3 {+17.9/26 743974 2626662120} 88.Qa1+ {+5.0/12 5982 11373} Kd3 {+14.3/26 2487841 7892546223}
89.Qe5 {+5.2/12 2034 7573} Rfd6 {+14.1/26 3472994 10949149561} 90.h5 {+5.3/12 3206 4612} Kc4 {+19.7/26 3577023 11915284614}
91.Bf5 {+5.3/12 702 8279} a5 {+23.3/26 3858187 13128873813} 92.Qxa5 {+5.1/12 631 8145} Kd4 {+77.1/26 3529223 13181730023}
93.Kh4 {+5.1/12 447 7952} Kc4 {+94.8/26 3084144 10445365528} 94.Qe5 {+5.8/12 1165 8071} Kb3 {+89.3/26 688335 2465798842}
95.g4 {+5.6/12 284 7898} Ka3 {+93.2/26 227060 860620833} 96.Qc5+ {+5.6/12 312 11961} 1-0

[/pgn]

[Uri Blass]

12 plies could beat 27 plies 1.5-0.5

Result:
---------------------------------------------------------------------------------------------
# name games wins draws losses score elo + -
1. Stockfish dev-20251122-d9fd5165 2 1 1 0 1.5 34 141 128
2. Stockfish 1.9.1 JA 64bit 2 0 1 1 0.5 -34 128 141

Cross table:
---------------------------------------------------------------------------------------------
# name score games 1 2
1. Stockfish dev-20251122-d9fd5165 1.5 2 x 1=
2. Stockfish 1.9.1 JA 64bit 0.5 2 0= x

Tech:
---------------------------------------------------------------------------------------------

Tech (average nodes, depths, time/m per move, others per game), counted for computing moves only, ignored moves with zero nodes:
# name nodes/m NPS depth/m time/m moves time
1. Stockfish dev-20251122-d9fd5165 20K 86128 12.0 0.2 95.5 22.3
2. Stockfish 1.9.1 JA 64bit 492359K 2265664 27.0 217.3 95.5 20753.4
all --- 240419K 2263320 19.5 108.8 95.5 10387.9

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.11.30"]
[Time "04:23:17"]
[Round "1"]
[Board "1"]
[White "Stockfish dev-20251122-d9fd5165"]
[Black "Stockfish 1.9.1 JA 64bit"]
[Result "1-0"]
[Termination "mate"]
[ECO "C02"]
[Opening "French"]
[TimeControl "depth: 22;depth: 12"]
[PlyCount "135"]

1.e4 {+0.3/12 7233 62529} e6 {+0.1/27 400856 863604439} 2.d4 {+0.5/12 44 6977} d5 {+0.1/27 243453 530196417}
3.e5 {+0.4/12 388 32498} c5 {-0.2/27 197251 424893057; C02: French, advance variation} 4.c3 {+0.3/12 431 52045} Nc6 {-0.2/27 202914 442882051}
5.Nf3 {+0.3/12 65 11774} Qb6 {-0.2/27 796604 1692589709; C02: French, advance, Paulsen attack} 6.Be2 {+0.3/12 405 31451} cxd4 {-0.2/27 181057 386698508}
7.cxd4 {+0.3/12 176 9371} Nge7 {-0.1/27 215471 462973318} 8.Na3 {+0.4/12 195 24388} Nf5 {-0.2/27 428202 901385136}
9.Nc2 {+0.3/12 395 42483} Bb4+ {-0.2/27 157394 352858703} 10.Kf1 {+0.8/12 119 27987} Be7 {-0.2/27 1470002 3006960501}
11.h4 {+0.8/12 180 26198} Bd7 {-0.2/27 786982 1593768353} 12.g4 {+1.1/12 24 5017} Nh6 {+0.0/27 451598 928586406}
13.Rg1 {+1.1/12 73 8374} Ng8 {+0.0/27 305545 625693066} 14.Rg3 {+1.3/12 108 15468} Bf8 {+0.0/27 1111900 2257408373}
15.h5 {+1.4/12 141 22509} Rc8 {+0.0/27 285736 582910261} 16.Kg2 {+1.6/12 110 13162} f6 {+0.0/27 557054 1175204113}
17.Bd3 {+1.8/12 246 23121} fxe5 {+0.0/27 314939 672458378} 18.dxe5 {+1.7/12 182 15573} Nh6 {+0.0/27 541599 1138425957}
19.Qe2 {+1.8/12 159 20098} Nf7 {+0.0/27 759788 1557116284} 20.g5 {+1.9/12 126 13092} Nfd8 {+0.0/27 695745 1446249672}
21.a3 {+2.1/12 92 11353} Na5 {+1.1/27 6351426 12782021229} 22.b4 {+2.2/12 60 3042} Nc4 {+1.3/27 3699594 7673425517}
23.h6 {+2.2/12 544 13729} g6 {+0.7/27 2196770 4524640149} 24.Ne3 {+2.1/12 278 8734} Bb5 {+0.8/27 1033092 2143453572}
25.Ng4 {+2.9/12 54 3588} Be7 {+0.9/27 638146 1331143858} 26.a4 {+2.9/12 147 8111} Qa6 {+2.8/27 2332156 4852480943}
27.Nf6+ {+3.0/12 316 8902} Bxf6 {+3.5/27 753898 1696604516} 28.exf6 {+2.9/12 182 5177} O-O {+3.5/27 995720 2258529526}
29.Bb2 {+3.0/12 389 14343} Be8 {+2.5/27 465433 1044525858} 30.Ne5 {+3.4/12 88 4524} Qd6 {+2.9/27 663139 1534096067}
31.Bxc4 {+2.7/12 335 14971} dxc4 {+3.1/27 849458 2037158306} 32.b5 {+2.9/12 279 15934} Qd5+ {+3.6/27 521084 1267508653}
33.Kg1 {+3.2/12 2459 3853} Nf7 {+3.8/27 331563 838060158} 34.Rd1 {+3.3/12 114 7153} Qc5 {+4.2/27 265136 685988428}
35.Nxf7 {+3.0/12 170 10853} Rxf7 {+2.7/27 229025 600586010} 36.Qxe6 {+3.3/12 152 9149} Qf5 {+2.8/27 127912 345568761}
37.Qxf5 {+3.0/12 96 9441} gxf5 {+2.7/27 86920 241798586} 38.Re3 {+3.0/12 115 10365} Rfc7 {+2.8/27 181370 503106098}
39.Rde1 {+3.3/12 42 4685} Bg6 {+2.7/27 219602 626703496} 40.Bc3 {+3.8/12 88 8090} Rf8 {+2.6/27 20800 64072995}
41.f4 {+4.1/12 25 3451} Rd8 {+2.9/27 70308 212823824} 42.Re7 {+3.9/12 51 3345} Rdd7 {+3.3/27 93567 288647546}
43.Rg7+ {+3.9/12 66 7109} Rxg7 {+4.1/27 31558 98415391} 44.hxg7 {+4.2/12 125 15882} Bh5 {+4.4/27 21031 68279003}
45.Re5 {+4.0/12 27 7232} Bf7 {+4.8/27 27447 86333850} 46.Rxf5 {+4.1/12 45 3941} Rc8 {+6.0/27 36225 114171409}
47.Re5 {+4.4/12 16 2599} h6 {+7.1/27 41081 132456750} 48.gxh6 {+4.5/12 15 2688} Rc7 {+20.6/27 177844 554406695}
49.Re3 {+4.3/12 93 7049} Kh7 {+44.5/27 313553 989503309} 50.Re7 {+4.2/12 402 6907} Rxe7 {+90.1/27 60134 187119162}
51.fxe7 {+4.5/12 35 3890} Kg8 {+94.7/27 346802 1112191747} 52.f5 {+4.6/12 68 3597} Kh7 {+107.4/27 678 2375890}
53.Kf2 {+5.2/12 41 4516} Kg8 {M-16/27 247283 776424533} 54.Kf3 {+5.5/12 113 3779} Kh7 {M-14/27 521099 1608979882}
55.Ke4 {+5.4/12 539 7457} a6 {M-13/27 114269 358961885} 56.bxa6 {+8.3/12 395 31993} bxa6 {M-12/27 84300 270627173}
57.Ke5 {+9.7/12 135 27428} Be8 {M-10/27 51617 165987050} 58.a5 {+10.5/12 22 5148} Bf7 {M-10/27 11426 38365217}
59.Kd6 {+10.4/12 10 2170} Be8 {M-9/27 4300 16436300} 60.Kc7 {+11.4/12 63 2485} Bf7 {M-8/27 2054 9065112}
61.Kd8 {+8.9/12 83 5474} Bh5 {M-7/27 389 1838212} 62.e8=Q {M+8/12 10 1773} Bxe8 {M-6/27 77 372309}
63.Kxe8 {M+7/12 13 692} Kg8 {M-5/27 22 100511} 64.h7+ {M+6/12 10 632} Kxh7 {M-4/27 10 25477}
65.Kf8 {M+5/12 10 1110} Kh6 {M-3/27 10 5018} 66.g8=Q {M+4/12 10 785} Kh5 {M-2/27 10 1443}
67.Qg3 {M+2/12 10 877} Kh6 {M-1/27 10 207} 68.Qg6# {M+1/12 10 431} 1-0

[/pgn]

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.11.30"]
[Time "04:23:42"]
[Round "1"]
[Board "2"]
[White "Stockfish 1.9.1 JA 64bit"]
[Black "Stockfish dev-20251122-d9fd5165"]
[Result "1/2-1/2"]
[Termination "fifty moves"]
[ECO "D41"]
[Opening "QGD"]
[TimeControl "depth: 12;depth: 22"]
[PlyCount "247"]

1.Nf3 {+0.2/27 370868 796528593} d5 {+0.3/12 111 16748} 2.d4 {+0.3/27 226078 488359858} Nf6 {+0.3/12 176 21161}
3.c4 {+0.4/27 294524 636403748} e6 {+0.3/12 64 11038} 4.Nc3 {+0.2/27 469766 998626501} c5 {+0.3/12 78 7089}
5.cxd5 {+0.2/27 627081 1401108245} Nxd5 {+0.3/12 168 16273; D41: QGD, Semi-Tarrasch, 5.cd} 6.e4 {+0.5/27 346650 788854839} Nxc3 {+0.3/12 286 29258}
7.bxc3 {+0.4/27 317189 729577416} cxd4 {+0.3/12 186 19772} 8.cxd4 {+0.4/27 248987 573819008} Bb4+ {+0.4/12 149 24990}
9.Bd2 {+0.5/27 99117 220945915} Bxd2+ {+0.4/12 210 11453} 10.Qxd2 {+0.4/27 207032 463124841} O-O {+0.3/12 84 9452}
11.Bb5 {+0.5/27 229833 530010686} a6 {+0.1/12 107 21542; D41: QGD, Semi-Tarrasch, Kmoch variation} 12.Bd3 {+0.4/27 109996 249354831} Nc6 {+0.2/12 420 50569}
13.Qc3 {+0.4/27 170289 392289829} Bd7 {-0.2/12 35 9071} 14.O-O {+0.4/27 254264 632066169} Qa5 {-0.1/12 170 36435}
15.Qb2 {+0.4/27 141570 338295596} Qb4 {-0.2/12 78 18255} 16.Qb1 {+0.2/27 248933 676890477} Rfd8 {-0.0/12 133 30305}
17.d5 {+0.3/27 188062 500072291} exd5 {-0.1/12 105 20957} 18.exd5 {+0.2/27 135918 380793107} Qxb1 {-0.0/12 48 7327}
19.Rfxb1 {+0.0/27 510245 1360707009} Na5 {-0.1/12 74 18566} 20.Ne5 {+0.0/27 109538 306585054} Bb5 {-0.1/12 346 61902}
21.Be4 {+0.0/27 57519 165435397} g6 {-0.1/12 311 57058} 22.a4 {+0.0/27 46909 136513685} Bc4 {-0.1/12 74 15498}
23.Nxc4 {+0.0/27 16860 47919752} Nxc4 {-0.0/12 70 18034} 24.Bd3 {+0.0/27 12078 35750535} Nd6 {-0.1/12 148 33401}
25.f3 {+0.0/27 226709 659980581} Kg7 {-0.2/12 123 12299} 26.Kf2 {-0.0/27 115839 334924925} Rd7 {-0.2/12 335 48198}
27.g4 {+0.0/27 55652 162433473} Re8 {-0.2/12 332 54279} 28.Rc1 {+0.0/27 18222 53453629} Re5 {-0.2/12 2821 42459}
29.Rc5 {+0.0/27 16620 47740726} h5 {-0.2/12 1367 43024} 30.h3 {+0.0/27 25033 73517758} b6 {-0.2/12 10 2795}
31.Rc6 {+0.0/27 160384 472694870} Rxd5 {-0.2/12 57 14413} 32.Bxa6 {+0.0/27 94458 282297467} Rd2+ {-0.1/12 191 39915}
33.Kf1 {+0.0/27 68073 206364368} Nb7 {-0.1/12 61 16460} 34.Rxb6 {+0.0/27 97695 290483735} Nc5 {-0.2/12 63 16082}
35.Be2 {+0.0/27 32165 101538841} Re7 {-0.3/12 388 89847} 36.Re1 {+0.0/27 16004 51219298} Nxa4 {-0.2/12 220 72831}
37.Rc6 {+0.0/27 8108 26690988} hxg4 {-0.1/12 89 40992} 38.hxg4 {+0.0/27 4039 13803279} Re3 {-0.1/12 23 6960}
39.Kf2 {+0.0/27 3952 12923800} Re8 {-0.1/12 140 50858} 40.Rc4 {+0.0/27 9708 31258648} Nb6 {-0.1/12 55 14641}
41.Re4 {+0.0/27 24981 83421284} Rxe4 {-0.1/12 45 11493} 42.fxe4 {+0.0/27 10221 35993303} Rb2 {-0.1/12 90 14424}
43.Ke3 {+0.0/27 17958 62821260} Nd7 {-0.1/12 50 13414} 44.Rd1 {+0.0/27 3783 14299629} Rb7 {-0.1/12 103 15374}
45.Kf4 {+0.0/27 13270 47999103} Rc7 {-0.1/12 92 18213} 46.Bb5 {+0.0/27 14235 49478452} Nf8 {-0.1/12 62 11704}
47.Ke5 {+0.0/27 11207 37642025} Rc5+ {-0.2/12 193 26476} 48.Rd5 {+0.0/27 5355 18663318} Rc1 {-0.3/12 141 28973}
49.Kd6 {+0.0/27 5821 20451610} Rg1 {-0.3/12 181 46297} 50.Be2 {+0.0/27 8404 27934799} Rg2 {-0.2/12 5339 74952}
51.Bd1 {+0.0/27 15358 50743960} Ne6 {-0.3/12 224 56976} 52.Ke5 {+0.0/27 2567 8572180} Rf2 {-0.3/12 51 19716}
53.Rb5 {+0.0/27 16804 57192945} Rf1 {-0.2/12 126 42400} 54.Be2 {+0.0/27 4495 15323663} Rf2 {-0.3/12 5108 26111}
55.Bc4 {+0.0/27 8662 29686938} Ng5 {-0.3/12 78 9975} 56.Rb7 {+0.0/27 6385 22511419} Kh6 {-0.3/12 359 23399}
57.Kd4 {+0.0/27 3135 11224598} f6 {-0.3/12 63 21761} 58.Rb6 {+0.0/27 3887 13131994} Rf4 {-0.1/12 464 78886}
59.Bd3 {+0.0/27 1917 6399181} Nf3+ {-0.1/12 69 10231} 60.Ke3 {+0.0/27 2179 7750093} Kg5 {-0.1/12 38 13597}
61.Be2 {+0.0/27 6699 23419907} Nh4 {-0.1/12 46 14189} 62.Rb5+ {+0.1/27 10966 38819990} f5 {-0.0/12 47 15252}
63.gxf5 {+0.1/27 1576 5936426} Ng2+ {+0.1/12 141 43123} 64.Kd4 {+0.0/27 25455 93872664} gxf5 {+0.1/12 47 14522}
65.Bd3 {+0.0/27 2541 9686454} Kf6 {+0.1/12 69 15782} 66.Rb8 {+0.1/27 4474 17588956} Nh4 {+0.1/12 104 49731}
67.Kd5 {+0.0/27 9636 37075284} fxe4 {+0.1/12 68 15927} 68.Bxe4 {+0.0/27 15795 60678073} Kg7 {+0.1/12 47 11537}
69.Ke5 {+0.1/27 27114 105287407} Rf8 {+0.0/12 44 18617} 70.Rb7+ {+0.0/27 25620 101325380} Rf7 {+0.1/12 156 38088}
71.Rb1 {+0.0/27 22183 86219476} Ra7 {-0.0/12 74 33652} 72.Rg1+ {+0.1/27 13965 54706267} Kh6 {+0.0/12 34 17032}
73.Rg4 {+0.1/27 13731 54686738} Ra4 {+0.1/12 131 57221} 74.Rxh4+ {+1.0/27 823 3815015} Kg5 {+0.3/12 100 37828}
75.Rh2 {+1.0/27 797 3748434} Ra5+ {+0.3/12 82 40698} 76.Bd5 {+1.0/27 300 1400342} Kg4 {+0.3/12 26 18672}
77.Rg2+ {+1.0/27 1053 5167556} Kh3 {+0.3/12 16 9538} 78.Rg1 {+1.0/27 1300 6324348} Rb5 {+0.3/12 56 29711}
79.Kd4 {+1.0/27 1243 6208208} Kh4 {+0.2/12 84 62133} 80.Ke4 {+1.0/27 1453 7288957} Kh5 {+0.1/12 92 62259}
81.Bf7+ {+1.0/27 2232 11213567} Kh6 {+0.1/12 20 14117} 82.Rg6+ {+1.0/27 819 4223745} Kh7 {+0.3/12 77 51620}
83.Rg2 {+1.0/27 431 2216818} Rb7 {+0.3/12 22 16321} 84.Bd5 {+1.0/27 1712 8644600} Rg7 {+0.2/12 42 31820}
85.Ra2 {+1.0/27 1824 9219423} Rg5 {+0.2/12 31 21168} 86.Be6 {+1.0/27 2445 11679329} Kg6 {+0.1/12 27 19973}
87.Ra6 {+1.0/27 2181 10940855} Rc5 {+0.1/12 28 18545} 88.Bd5+ {+1.0/27 1889 8881864} Kg5 {+0.0/12 13 8110}
89.Ke5 {+1.0/27 518 2299524} Kh4 {+0.2/12 56 30185} 90.Ra8 {+1.0/27 2276 10134858} Kg5 {+0.0/12 82 51337}
91.Rg8+ {+1.0/27 859 3754142} Kh5 {+0.0/12 32 19820} 92.Kd4 {+1.0/27 610 3296418} Rb5 {+0.0/12 19 10322}
93.Rg7 {+1.0/27 2094 11445122} Rb4+ {-0.0/12 10 6956} 94.Ke3 {+1.0/27 2061 11005694} Kh6 {+0.1/12 32 24180}
95.Rg1 {+1.0/27 799 4505345} Rb5 {+0.0/12 10 7347} 96.Kd4 {+1.0/27 923 5197970} Ra5 {+0.0/12 10 3544}
97.Rg2 {+1.0/27 802 4355185} Kh5 {+0.0/12 17 8490} 98.Ke5 {+1.0/27 530 2988571} Rc5 {+0.0/12 10 1728}
99.Ke4 {+1.0/27 1048 5710104} Kh6 {+0.0/12 10 3691} 100.Rg8 {+1.0/27 739 3971520} Ra5 {-0.0/12 38 25050}
101.Rg3 {+1.0/27 517 2810768} Rb5 {+0.0/12 13 7196} 102.Kd4 {+1.0/27 1727 8646851} Kh5 {+0.0/12 10 2815}
103.Ke5 {+0.9/27 2190 11178405} Ra5 {+0.0/12 19 14277} 104.Rg1 {+0.9/27 612 3220834} Kh6 {+0.0/12 10 6858}
105.Ke6 {+1.0/27 580 2962829} Kh5 {+0.0/12 45 32172} 106.Bf3+ {+1.0/27 732 3803111} Kh4 {+0.1/12 108 60288}
107.Kf6 {+1.0/27 364 1878454} Ra3 {+0.0/12 94 81778} 108.Be4 {+1.0/27 775 4238190} Rg3 {+0.0/12 10 4305}
109.Rc1 {+0.9/27 3316 15564748} Ra3 {+0.0/12 12 7872} 110.Kf5 {+1.0/27 5213 24588952} Kg3 {+0.0/12 19 12578}
111.Rf1 {+0.0/27 340745 1444184982} Ra5+ {+0.0/12 32 13389} 112.Ke6 {+0.0/27 4382 18843306} Rb5 {+0.0/12 10 6316}
113.Rf3+ {+0.0/27 19321 82829697} Kh4 {+0.0/12 10 5311} 114.Ra3 {+0.0/27 12084 53159236} Kg5 {+0.0/12 10 5632}
115.Bd3 {+0.0/27 1878 8573938} Rb8 {-0.0/12 18 8128} 116.Bc4 {+0.0/27 1640 7718991} Kf4 {+0.0/12 38 23068}
117.Ba2 {+0.0/27 427 2207166} Rb6+ {+0.0/12 40 16083} 118.Kd5 {+0.0/27 233 1262134} Rg6 {+0.0/12 68 44196}
119.Bc4 {+0.0/27 302 1631668} Rg5+ {+0.0/12 10 4993} 120.Kd4 {+0.0/27 100 602720} Rg7 {+0.0/12 10 4481}
121.Bd5 {+0.0/27 96 575261} Rc7 {+0.0/12 10 5037} 122.Rf3+ {+0.0/27 30 189991} Kg4 {+0.0/12 10 736}
123.Rf1 {+0.0/27 13 79289} Rd7 {+0.0/12 10 588} 124.Ra1 {+0.0/27 10 567} 1/2-1/2

[/pgn]

[Uri Blass]

Stockfish developement 22 plies only 1.5-0.5 against 12 plies of the same engine

Result:
------------------------------------------------------------------------------------------------
# name games wins draws losses score elo + -
1. Stockfish dupdev-20251122-d9fd5165 2 1 1 0 1.5 34 141 128
2. Stockfish dev-20251122-d9fd5165 2 0 1 1 0.5 -34 128 141

Cross table:
------------------------------------------------------------------------------------------------
# name score games 1 2
1. Stockfish dupdev-20251122-d9fd5165 1.5 2 x 1=
2. Stockfish dev-20251122-d9fd5165 0.5 2 0= x

Tech:
------------------------------------------------------------------------------------------------

Tech (average nodes, depths, time/m per move, others per game), counted for computing moves only, ignored moves with zero nodes:
# name nodes/m NPS depth/m time/m moves time
1. Stockfish dupdev-20251122-d9fd5165 3470K 1454095 22.0 2.4 70.5 168.2
2. Stockfish dev-20251122-d9fd5165 20K 498043 12.0 0.0 70.5 2.8
all --- 1703K 1438431 17.0 1.2 70.5 85.5


[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.12.01"]
[Time "01:30:38"]
[Round "1"]
[Board "1"]
[White "Stockfish dupdev-20251122-d9fd5165"]
[Black "Stockfish dev-20251122-d9fd5165"]
[Result "1-0"]
[Termination "mate"]
[ECO "D41"]
[Opening "QGD"]
[TimeControl "depth: 12;depth: 27"]
[PlyCount "147"]

1.d4 {+0.3/22 4400 1909938} d5 {+0.3/12 81 35585} 2.c4 {+0.3/22 1951 1152148} e6 {+0.3/12 18 7328}
3.Nc3 {+0.3/22 2543 1464642} Nf6 {+0.3/12 39 16375} 4.Nf3 {+0.3/22 2399 1426086} c5 {+0.3/12 83 25323}
5.cxd5 {+0.3/22 1543 946005} cxd4 {+0.3/12 36 16344; D41: QGD, Semi-Tarrasch, 5.cd} 6.Qxd4 {+0.3/22 2273 1422141} exd5 {+0.3/12 10 2394}
7.e4 {+0.3/22 1483 954595} Nc6 {+0.3/12 19 9066} 8.Bb5 {+0.3/22 1924 1295691} dxe4 {+0.3/12 52 23256}
9.Qxd8+ {+0.2/22 1880 1265802} Kxd8 {+0.4/12 107 56799} 10.Ng5 {+0.2/22 2212 1532811} Ke8 {+0.4/12 12 5800}
11.O-O {+0.2/22 2554 1761178} h6 {+0.4/12 13 6508} 12.Ngxe4 {+0.4/22 2605 1701315} Nxe4 {+0.4/12 17 7516}
13.Nxe4 {+0.3/22 2956 1869491} Be6 {+0.4/12 56 22900} 14.Be3 {+0.3/22 2504 1494323} a6 {+0.4/12 150 65362}
15.Be2 {+0.4/22 2491 1468148} f5 {+0.4/12 14 7028} 16.Nc5 {+0.3/22 1967 1342405} Bxc5 {+0.4/12 37 19775}
17.Bxc5 {+0.3/22 1901 1277491} Kf7 {+0.4/12 59 30564} 18.Rfe1 {+0.3/22 2300 1589353} Rhe8 {+0.3/12 164 85799}
19.b3 {+0.2/22 2229 1496890} Rad8 {+0.4/12 189 71798} 20.Bf3 {+0.2/22 2542 1750172} Rd3 {+0.3/12 101 37599}
21.Rac1 {+0.2/22 4164 2918255} Rd2 {+0.2/12 51 25835} 22.a3 {+0.1/22 2528 1777660} Rc8 {+0.3/12 66 35431}
23.h4 {+0.4/22 4606 3226258} Bd5 {+0.5/12 70 41336} 24.Bb4 {+1.2/22 2132 1530576} Rd3 {+1.1/12 42 25065}
25.Rc3 {+1.2/22 2277 1636322} Be4 {+1.2/12 69 39923} 26.Rxd3 {+1.4/22 2951 2177491} Bxd3 {+1.1/12 95 56709}
27.Bd5+ {+1.4/22 2299 1762554} Kg6 {+1.0/12 70 43784} 28.Bc3 {+1.2/22 2251 1776523} Rc7 {+0.9/12 66 39373}
29.Re3 {+1.3/22 1659 1304902} Bc2 {+1.0/12 76 45772} 30.Re2 {+1.4/22 1438 1098459} Bd1 {+1.1/12 70 39868}
31.Rd2 {+1.6/22 1598 1205993} Ne7 {+1.3/12 74 45922} 32.Be5 {+1.6/22 1321 993728} Rc5 {+1.4/12 23 12795}
33.Bxb7 {+1.8/22 3479 2531867} Bxb3 {+1.4/12 10 4436} 34.Bb2 {+1.9/22 1997 1549162} Kf7 {+1.4/12 73 41306}
35.Bxa6 {+1.9/22 1564 1144415} Nd5 {+1.5/12 47 23558} 36.Rd3 {+1.8/22 5579 3982588} Ra5 {+1.8/12 22 12596}
37.Rxb3 {+3.3/22 4478 3540059} Rxa6 {+1.9/12 27 16733} 38.Rb7+ {+3.2/22 2818 2346291} Ne7 {+2.1/12 20 12378}
39.h5 {+3.1/22 4625 3952186} g5 {+2.5/12 30 16830} 40.hxg6+ {+3.4/22 4332 3729703} Rxg6 {+2.9/12 58 35480}
41.a4 {+3.4/22 2523 2197303} Ke8 {+2.9/12 14 7585} 42.a5 {+3.5/22 2471 2274029} Ra6 {+2.9/12 10 4629}
43.Bc3 {+3.5/22 1976 1802805} Nd5 {+3.0/12 14 7429} 44.Bd2 {+3.8/22 2538 2238558} Ne7 {+3.1/12 32 17905}
45.Rb6 {+4.6/22 4512 4312571} Rxb6 {+3.3/12 28 19815} 46.axb6 {+5.3/22 3045 3634912} Kd7 {+3.4/12 16 10034}
47.Bxh6 {+5.5/22 3945 5227957} Kc6 {+3.4/12 21 12746} 48.Be3 {+5.5/22 3854 5502008} f4 {+3.2/12 10 6148}
49.Bxf4 {+5.9/22 4963 7414704} Kxb6 {+3.6/12 10 3407} 50.g4 {+6.6/22 15222 24476482} Kc5 {+3.4/12 10 6305}
51.Kg2 {+6.8/22 5592 9580992} Kd4 {+3.4/12 10 6798} 52.Kg3 {+6.9/22 2375 4238856} Kd5 {+3.3/12 10 3979}
53.Bc1 {+7.1/22 4560 8258230} Ng6 {+3.6/12 10 4753} 54.Bb2 {+7.8/22 3756 7202682} Ke4 {+3.7/12 11 6852}
55.f3+ {+8.2/22 6894 12099015} Kd5 {+3.9/12 10 3129} 56.g5 {+9.1/22 6743 12731348} Ne7 {+4.4/12 20 16027}
57.Kg4 {+9.9/22 6433 12629107} Ng6 {+4.8/12 12 7147} 58.f4 {+12.9/22 6863 12870398} Ke4 {+5.4/12 18 12850}
59.f5 {+31.6/22 3024 5810073} Nf4 {+5.9/12 14 10243} 60.g6 {+73.4/22 45531 116632495} Nd3 {+6.1/12 10 6700}
61.g7 {+73.4/22 782 1934493} Nxb2 {+6.0/12 10 8320} 62.g8=Q {+77.3/22 1580 4003015} Nd3 {+6.3/12 10 9363}
63.Qc4+ {+48.5/22 10223 25715622} Ke3 {+6.1/12 10 11343} 64.Qxd3+ {+78.1/22 6761 17756216} Kxd3 {+5.6/12 17 31859}
65.f6 {M+12/22 18342 48127867} Kd4 {+5.3/12 18 25624} 66.f7 {M+11/22 4062 10208820} Kd5 {+5.2/12 10 17064}
67.Kf5 {M+9/22 5118 13166247} Kd6 {+5.2/12 10 14243} 68.f8=Q+ {M+7/22 128 291942} Kd5 {+5.0/12 10 13213}
69.Qb4 {M+6/22 25 56389} Kc6 {M-5/12 10 6289} 70.Ke5 {M+5/22 13 30390} Kc7 {M-4/12 10 529}
71.Kd5 {M+4/22 10 10639} Kd8 {M-3/12 10 481} 72.Kd6 {M+3/22 10 3226} Ke8 {M-2/12 10 207}
73.Ke6 {M+2/22 10 873} Kd8 {M-1/12 10 24} 74.Qb8# {M+1/22 10 655} 1-0

[/pgn]

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.12.01"]
[Time "01:31:12"]
[Round "1"]
[Board "2"]
[White "Stockfish dev-20251122-d9fd5165"]
[Black "Stockfish dupdev-20251122-d9fd5165"]
[Result "1/2-1/2"]
[Termination "insufficient material"]
[ECO "C02"]
[Opening "French"]
[TimeControl "depth: 27;depth: 12"]
[PlyCount "135"]

1.e4 {+0.3/12 991 62529} e6 {+0.3/22 2360 1282828} 2.d4 {+0.5/12 13 6977} d5 {+0.4/22 943 528371}
3.e5 {+0.4/12 54 32498} c5 {+0.3/22 1127 624422; C02: French, advance variation} 4.c3 {+0.3/12 94 52045} Nc6 {+0.4/22 3849 2157962}
5.Nf3 {+0.3/12 20 11774} Qb6 {+0.3/22 2270 1286409; C02: French, advance, Paulsen attack} 6.Be2 {+0.3/12 59 31451} cxd4 {+0.3/22 3269 1916352}
7.cxd4 {+0.3/12 16 9371} Nh6 {+0.2/22 1490 904907} 8.Bxh6 {+0.4/12 30 17827} Qxb2 {+0.3/22 3736 2256236}
9.Nbd2 {+0.3/12 39 22620} gxh6 {+0.3/22 3285 2073802} 10.O-O {+0.4/12 48 28662} Bd7 {+0.3/22 1513 1021654}
11.Rb1 {+0.4/12 60 35716} Qxa2 {+0.2/22 1053 752428} 12.Rxb7 {+0.3/12 47 31139} Rb8 {+0.2/22 619 477263}
13.Qa1 {+0.3/12 13 9225} Qxa1 {+0.1/22 767 602852} 14.Rxb8+ {+0.4/12 18 12854} Nxb8 {+0.1/22 1032 816890}
15.Rxa1 {+0.3/12 45 30240} Nc6 {+0.0/22 1177 967607} 16.Bb5 {+0.2/12 80 54015} Bb4 {+0.0/22 1011 698649}
17.Bxc6 {+0.2/12 34 22951} Bxc6 {+0.0/22 789 559692} 18.Ra6 {+0.2/12 16 11442} Bb5 {+0.0/22 470 374079}
19.Rxa7 {+0.2/12 35 21047} O-O {+0.0/22 794 609332} 20.Rb7 {+0.2/12 17 12744} Bxd2 {+0.0/22 475 332592}
21.Nxd2 {+0.2/12 51 25492} Ba6 {+0.0/22 473 303803} 22.Rb3 {+0.3/12 23 16944} Be2 {+0.0/22 537 403053}
23.Rg3+ {+0.3/12 14 9633} Kh8 {+0.0/22 279 218679} 24.Nb3 {+0.2/12 14 9408} Ra8 {+0.0/22 232 190891}
25.h4 {+0.2/12 32 19944} h5 {+0.0/22 164 114798} 26.Re3 {+0.3/12 79 40916} Ra2 {+0.0/22 100 88127}
27.Nc5 {+0.4/12 10 3471} Rd2 {+0.0/22 69 65734} 28.Nd7 {+0.1/12 46 37699} Bd3 {+0.0/22 147 138844}
29.Rf3 {+0.1/12 31 25075} Rd1+ {+0.2/22 500 394901} 30.Kh2 {+0.1/12 17 12624} Bg6 {+0.1/22 419 359588}
31.Rf4 {+0.0/12 45 31577} Rc1 {+0.1/22 452 406709} 32.Nf6 {+0.1/12 15 11496} Kg7 {+0.1/22 517 487081}
33.Ne8+ {+0.0/12 17 14151} Kf8 {+0.0/22 273 277511} 34.Nf6 {+0.0/12 14 11179} Kg7 {+0.0/22 60 59358}
35.g3 {+0.0/12 10 3773} Ra1 {+0.0/22 72 55347} 36.Ne8+ {+0.0/12 19 11642} Kf8 {+0.0/22 65 56501}
37.Nf6 {+0.0/12 10 1575} Kg7 {+0.0/22 94 81987} 38.Kg2 {+0.0/12 10 2728} Rd1 {+0.0/22 132 110633}
39.f3 {+0.0/12 18 11099} Rd2+ {+0.0/22 53 48642} 40.Kg1 {+0.1/12 33 24640} Rc2 {+0.0/22 24 24031}
41.g4 {+0.1/12 39 28763} hxg4 {+0.0/22 32 36101} 42.fxg4 {+0.1/12 25 18709} Rd2 {+0.0/22 40 34359}
43.Kf1 {+0.0/12 34 26116} Bd3+ {+0.0/22 63 51815} 44.Ke1 {+0.0/12 10 5765} Re2+ {+0.0/22 189 148718}
45.Kd1 {+0.0/12 10 799} Rh2 {+0.0/22 144 103708} 46.Ne8+ {+0.1/12 10 4877} Kf8 {-0.0/22 597 498792}
47.Nd6 {-0.1/12 33 25379} Rxh4 {-0.0/22 797 614643} 48.Rxf7+ {-0.0/12 14 10182} Kg8 {+0.0/22 277 224903}
49.Rf6 {-0.1/12 32 25099} Rxg4 {-0.1/22 818 650888} 50.Rxe6 {-0.1/12 22 16963} Bg6 {-0.2/22 1131 843405}
51.Ke2 {-0.1/12 42 30329} Rxd4 {-0.1/22 1080 822764} 52.Re7 {-0.1/12 27 21323} h5 {-0.1/22 1319 963566}
53.Ra7 {-0.2/12 63 49692} h4 {-0.0/22 1136 1001402} 54.e6 {-0.2/12 10 7097} h3 {-0.0/22 357 349476}
55.e7 {-0.1/12 21 18472} h2 {+0.0/22 473 404584} 56.Ra1 {-0.1/12 10 5216} Rh4 {+0.0/22 580 391508}
57.Rh1 {-0.1/12 10 5776} d4 {+0.0/22 235 228014} 58.e8=Q+ {-0.1/12 24 19702} Bxe8 {+0.0/22 113 110721}
59.Nxe8 {-0.2/12 32 27517} Kf7 {+0.0/22 63 75127} 60.Nd6+ {-0.1/12 13 10138} Ke6 {+0.0/22 135 150520}
61.Nc4 {-0.2/12 15 11492} Kd5 {+0.0/22 588 545527} 62.Nd2 {-0.1/12 20 17465} Rh8 {+0.0/22 237 228804}
63.Kf2 {-0.0/12 11 9219} d3 {+0.0/22 484 546876} 64.Ke3 {-0.1/12 49 43158} Rh3+ {+0.0/22 83 82515}
65.Nf3 {-0.1/12 10 8906} Kc4 {+0.0/22 69 89267} 66.Rxh2 {-0.1/12 10 5710} Rxh2 {+0.0/22 25 59571}
67.Nxh2 {-0.1/12 10 3988} Kb4 {+0.0/22 26 65179} 68.Kxd3 {-0.0/12 10 9703} 1/2-1/2

[/pgn]

[Uri Blass]

1.9.1 28 plies could traw twice with 12 plies of developement version

1.9.1 has problem with the french defence but 12 plies of dev stockfish was not strong enough to convert.

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.12.02"]
[Round "1"]
[White "Stockfish 1.9.1 JA 64bit"]
[Black "Stockfish dev-20251122-d9fd5165"]
[Result "1/2-1/2"]
[TimeControl "depth: 12;depth: 26"]
[Time "04:09:33"]
[Board "1"]
[Termination "fifty moves"]
[ECO "D41"]
[Opening "QGD"]

1. Nf3 {+0.28/28 478081 1004333744} d5 {+0.26/12 65 16748} 2. d4 {+0.28/28 313899 657893401} Nf6 {+0.31/12 66 21161}
3. c4 {+0.28/28 484920 1029218979} e6 {+0.30/12 30 11038} 4. Nc3 {+0.28/28 1116970 2347044221} c5 {+0.29/12 17 7089}
5. cxd5 {+0.36/28 699592 1552831278} Nxd5 {+0.31/12 57 16273} 6. e4 {+0.52/28 362304 809060979} Nxc3 {+0.31/12 81 29258}
7. bxc3 {+0.48/28 356017 813268042} cxd4 {+0.35/12 53 19772} 8. cxd4 {+0.56/28 240371 540718270} Bb4+ {+0.43/12 67 24990}
9. Bd2 {+0.44/28 191962 439900743} Bxd2+ {+0.42/12 29 11453} 10. Qxd2 {+0.48/28 114060 260874265} O-O {+0.34/12 301 9452}
11. Bb5 {+0.40/28 279129 617973732; D41: QGD, Semi-Tarrasch, Kmoch variation} a6 {+0.08/12 58 21542} 12. Bd3 {+0.36/28 133684 301719659} Nc6 {+0.22/12 151 50569}
13. Qc3 {+0.44/28 286036 646747070} Bd7 {-0.19/12 26 9071} 14. O-O {+0.28/28 346792 817199348} Qa5 {-0.09/12 106 36435}
15. Qb2 {+0.28/28 120009 284173253} Qb4 {-0.23/12 48 18255} 16. Rab1 {+0.20/28 287886 764714197} Qxb2 {-0.13/12 86 35149}
17. Rxb2 {+0.20/28 67653 184767152} b5 {+0.08/12 198 76781} 18. Rd1 {+0.12/28 605222 1589746317} Rfd8 {-0.12/12 63 22547}
19. d5 {+0.08/28 173575 465310793} Na5 {-0.12/12 41 13842} 20. Ne5 {+0.00/28 324290 867720499} exd5 {-0.04/12 129 45400}
21. exd5 {+0.04/28 188538 523565226} Be8 {-0.10/12 85 28099} 22. Ng4 {+0.00/28 333517 884206425} Rac8 {-0.22/12 188 65753}
23. Ne3 {+0.00/28 232188 620197091} Nb7 {-0.30/12 17 7660} 24. g4 {+0.00/28 398942 1040809026} Nd6 {-0.37/12 156 35381}
25. f3 {+0.00/28 278421 705274472} g6 {-0.41/12 80 21075} 26. Kf2 {+0.00/28 363226 939647905} a5 {-0.42/12 76 19985}
27. Rc2 {+0.00/28 241479 654437300} Rxc2+ {-0.53/12 68 14107} 28. Nxc2 {+0.00/28 38267 107072844} Rc8 {-0.60/12 40 10521}
29. Nd4 {+0.00/28 198339 559606629} Rc3 {-0.48/12 256 50858} 30. Be2 {+0.00/28 228997 626411446} Ra3 {-0.42/12 199 52189}
31. Rd2 {-0.20/28 436815 1187532910} b4 {-0.50/12 210 54474} 32. Nc6 {-0.28/28 383359 1052035416} f6 {-0.52/12 144 37126}
33. h4 {-0.24/28 461000 1255398879} h6 {-0.49/12 94 18326} 34. Bd3 {-0.08/28 254715 714932741} Kf8 {-0.31/12 449 63361}
35. Bb1 {-0.24/28 127808 372951413} Bf7 {-0.17/12 423 79878} 36. Nd8 {-0.24/28 166604 482001534} Nc4 {-0.57/12 211 51297}
37. Rd4 {+0.00/28 206324 611532465} Ne5 {-0.44/12 163 24808} 38. d6 {+0.00/28 203163 583997197} Bxa2 {-0.64/12 31 4842}
39. f4 {+0.20/28 233933 701724627} Nxg4+ {+0.22/12 2271 100504} 40. Ke2 {+0.20/28 51494 156906022} Re3+ {+0.23/12 191 19932}
41. Kd2 {+0.16/28 47655 157958773} Re8 {+0.19/12 15 5912} 42. Nc6 {+0.16/28 126384 419234903} Bxb1 {+0.13/12 229 53783}
43. d7 {+0.16/28 82022 263528623} b3 {+0.12/12 97 21721} 44. dxe8=Q+ {+0.16/28 53175 169720914} Kxe8 {+0.12/12 54 12055}
45. Nxa5 {+0.16/28 16746 52857067} g5 {+0.11/12 73 6943} 46. fxg5 {+0.16/28 26460 87505141} Bf5 {+0.06/12 176 11732}
47. Nxb3 {+0.25/28 18924 56142437} fxg5 {+0.07/12 83 9658} 48. hxg5 {+0.25/28 3610 12348253} hxg5 {+0.13/12 160 17544}
49. Rd5 {+0.28/28 11659 40313030} Nh6 {+0.23/12 122 24230} 50. Nd4 {+0.28/28 2681 11607104} Bh3 {+0.15/12 59 13100}
51. Rxg5 {+0.28/28 10877 46578094} Nf7 {+0.25/12 413 71222} 52. Rg3 {+0.30/28 9903 41084150} Bc8 {+0.29/12 628 29092}
53. Ke3 {+0.30/28 10394 43371339} Ke7 {+0.30/12 27 8118} 54. Rg6 {+0.30/28 2468 11244738} Ne5 {+0.28/12 96 27448}
55. Nc6+ {+0.30/28 3058 13617610} Nxc6 {+0.28/12 59 20032} 56. Rxc6 {+0.30/28 148 856733} Bg4 {+0.27/12 162 25730}
57. Kd4 {+0.30/28 578 3519142} Bh5 {+0.28/12 83 31257} 58. Ke5 {+0.30/28 679 3986675} Kd7 {+0.33/12 93 27453}
59. Rd6+ {+0.30/28 356 1959941} Kc7 {+0.31/12 38 11346} 60. Kd5 {+0.30/28 280 1680554} Bf3+ {+0.35/12 32 13395}
61. Kc5 {+0.40/28 626 3564567} Kb7 {+0.38/12 146 20844} 62. Rd7+ {+0.45/28 780 4138815} Ka6 {+0.38/12 14 5384}
63. Rd3 {+0.45/28 392 2196836} Bh5 {+0.45/12 98 47028} 64. Rb3 {+0.45/28 505 3147879} Be8 {+0.44/12 10 4802}
65. Rb1 {+0.45/28 371 2110036} Bd7 {+0.45/12 56 26250} 66. Rb8 {+0.45/28 325 1991318} Ka7 {+0.32/12 42 33356}
67. Rb6 {+0.45/28 136 852493} Ba4 {+0.31/12 30 22429} 68. Rb1 {+0.45/28 162 1005938} Bd7 {+0.27/12 48 33830}
69. Rd1 {+0.45/28 620 3685470} Bh3 {+0.24/12 18 17376} 70. Rd3 {+0.45/28 827 4797734} Bf5 {+0.27/12 10 7481}
71. Rf3 {+0.45/28 523 3189146} Be4 {+0.25/12 11 8781} 72. Rb3 {+0.45/28 550 3051343} Bh1 {+0.23/12 10 3349}
73. Rb1 {+0.45/28 371 2358329} Bg2 {+0.27/12 17 11695} 74. Rg1 {+0.45/28 509 3166692} Be4 {+0.23/12 15 10051}
75. Re1 {+0.45/28 456 2897597} Bg2 {+0.20/12 14 13907} 76. Rb1 {+0.45/28 240 1426535} Bf3 {+0.13/12 12 7851}
77. Rb2 {+0.45/28 336 2074389} Bh1 {+0.14/12 10 5842} 78. Rb4 {+0.45/28 226 1392293} Ka6 {+0.13/12 10 3778}
79. Rb6+ {+0.45/28 418 2630249} Ka7 {+0.13/12 15 4924} 80. Rb2 {+0.45/28 55 276393} Ka6 {+0.13/12 10 3298}
81. Rb4 {+0.45/28 94 538807} Bf3 {+0.14/12 10 3959} 82. Rb6+ {+0.45/28 497 2981724} Ka7 {+0.13/12 10 7229}
83. Kb5 {+0.45/28 186 1138222} Bh1 {+0.16/12 11 9069} 84. Ka5 {+0.45/28 440 2820376} Bg2 {+0.13/12 10 4559}
85. Rb1 {+0.45/28 231 1576830} Bc6 {+0.13/12 10 7829} 86. Rb2 {+0.45/28 201 1302992} Bf3 {+0.13/12 10 6288}
87. Rf2 {+0.45/28 766 5104292} Be4 {+0.13/12 10 5759} 88. Re2 {+0.45/28 851 5532466} Bf3 {+0.13/12 10 5700}
89. Rb2 {+0.45/28 491 3369143} Be4 {+0.13/12 10 5601} 90. Rb3 {+0.45/28 321 2043640} Bh1 {+0.13/12 10 6006}
91. Rh3 {+0.40/28 917 5621698} Bg2 {+0.13/12 10 3226} 92. Rh2 {+0.25/28 3570 21724014} Bd5 {+0.13/12 13 8809}
93. Kb5 {+0.00/28 4831 25260833} Kb8 {+0.12/12 46 31567} 94. Kb6 {+0.00/28 730 3794856} Kc8 {+0.13/12 19 10541}
95. Rd2 {+0.00/28 73 392166} Be4 {+0.13/12 10 6262} 96. Rd1 {+0.00/28 181 967482} Bg2 {+0.13/12 10 6655}
97. Rb1 {+0.00/28 66 388479} Kd7 {+0.18/12 77 30912} 98. Ra1 {+0.00/28 65 351897} Kd6 {+0.21/12 39 19040}
99. Rb1 {+0.00/28 34 169736} Be4 {+0.03/12 89 23985} 100. Rc1 {+0.00/28 75 427897} Kd5 {+0.00/12 166 28954}
101. Ra1 {+0.00/28 65 392506} Kd4 {+0.00/12 22 9837} 102. Rd1+ {+0.00/28 39 199142} Ke3 {+0.00/12 22 2588}
103. Ka6 {+0.00/28 34 212615} Kf3 {+0.00/12 34 7009} 104. Ra1 {+0.00/28 13 84118} Bc2 {+0.00/12 17 4372}
105. Ka5 {+0.00/28 10 12017} Ke2 {+0.00/12 10 548} 106. Rb1 {+0.00/28 10 392} 1/2-1/2

[/pgn]

[pgn][Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2025.12.02"]
[Round "1"]
[White "Stockfish dev-20251122-d9fd5165"]
[Black "Stockfish 1.9.1 JA 64bit"]
[Result "1/2-1/2"]
[TimeControl "depth: 26;depth: 12"]
[Time "04:11:26"]
[Board "2"]
[Termination "repetition"]
[ECO "C02"]
[Opening "French"]

1. e4 {+0.34/12 146 62529} e6 {+0.08/28 711380 1499330748} 2. d4 {+0.52/12 106 6977} d5 {+0.04/28 377595 801477473}
3. e5 {+0.40/12 224 32498} c5 {-0.20/28 904816 1913123496} 4. c3 {+0.26/12 302 52045} Nc6 {-0.28/28 410844 848374873}
5. Nf3 {+0.35/12 71 11774; C02: French, advance, Paulsen attack} Qb6 {-0.24/28 789184 1631666001} 6. Be2 {+0.31/12 154 31451} cxd4 {-0.20/28 323356 687142234}
7. cxd4 {+0.27/12 48 9371} Nge7 {-0.28/28 301830 642723626} 8. Na3 {+0.38/12 114 24388} Nf5 {-0.24/28 290500 610048676}
9. Nc2 {+0.31/12 217 42483} Bb4+ {-0.08/28 458599 993927690} 10. Kf1 {+0.82/12 168 27987} Bf8 {-0.08/28 1836608 3756327212}
11. b4 {+1.01/12 347 50926} Bd7 {-0.24/28 1338889 2741953380} 12. g4 {+1.14/12 192 32570} Nfe7 {+0.00/28 397904 821529505}
13. a4 {+1.11/12 154 23032} h5 {+0.00/28 549567 1124535506} 14. gxh5 {+1.14/12 66 8082} Rxh5 {-0.20/28 652394 1328708541}
15. h4 {+1.08/12 97 13120} Rc8 {-0.20/28 2143445 4421076264} 16. Bd2 {+1.10/12 535 21913} Nf5 {-0.32/28 421926 898011768}
17. a5 {+1.23/12 276 9382} Qc7 {-0.36/28 1338586 2853048616} 18. b5 {+1.20/12 471 20251} Nce7 {-0.16/28 735753 1645259502}
19. Nce1 {+1.21/12 350 20563} g6 {-0.20/28 1312844 2710700966} 20. Rc1 {+1.26/12 690 31654} Qd8 {-0.16/28 302086 667457808}
21. Rxc8 {+1.10/12 153 7963} Qxc8 {-0.20/28 350606 770671475} 22. Ng2 {+1.11/12 140 8065} Rh8 {+0.00/28 447706 980476689}
23. Nf4 {+1.10/12 2626 35919} Bh6 {+0.00/28 302481 667593741} 24. Kg2 {+1.15/12 175 15906} Qc7 {+0.00/28 132124 293793274}
25. Qb1 {+1.47/12 206 18983} Nc8 {+0.00/28 356134 799334377} 26. Bd3 {+1.66/12 165 13635} Nce7 {+0.00/28 184314 419944109}
27. Qb4 {+1.61/12 246 33391} Qd8 {+0.00/28 790631 1766693815} 28. Qc5 {+1.70/12 86 11112} b6 {+0.00/28 169261 386598036}
29. axb6 {+1.51/12 146 21659} axb6 {+0.08/28 269978 610107456} 30. Qa3 {+1.46/12 182 25696} Qb8 {+0.20/28 957425 2180951052}
31. Qb4 {+1.47/12 358 56176} Qa8 {+0.04/28 202373 467296550} 32. Qb2 {+1.53/12 349 34342} Kf8 {+0.28/28 1762961 4000351044}
33. h5 {+1.56/12 151 10514} Rg8 {+0.56/28 792663 1841974528} 34. Ra1 {+1.61/12 121 18000} Qe8 {+1.01/28 1555720 3649651613}
35. Ra7 {+1.98/12 90 10483} Kg7 {+1.69/28 3339920 7689363212} 36. hxg6 {+1.99/12 1612 30526} Kh8 {+2.02/28 1897505 4554753781}
37. Nh5 {+2.22/12 359 4582} Rxg6+ {+1.69/28 717838 1790002060} 38. Kf1 {+1.94/12 1422 8341} Ng8 {+1.81/28 194546 494811869}
39. Bxh6 {+2.09/12 2098 17156} Rxh6 {+1.57/28 656545 1668620817} 40. Nf4 {+1.81/12 2713 24775} Nge7 {+0.68/28 836507 2128013875}
41. Ke2 {+1.21/12 503 41858} Rh1 {+0.92/28 993316 2484373507} 42. Rc7 {+1.27/12 575 25759} Kg7 {+0.28/28 170549 436964799}
43. Rb7 {+1.23/12 542 59358} Kh8 {+0.72/28 386740 1003568921} 44. Rc7 {+0.94/12 492 47716} Kg7 {+0.00/28 14636 38090117}
45. Qb4 {+1.17/12 173 25769} Qd8 {+0.28/28 334393 808363363} 46. Qc3 {+1.08/12 519 19297} Qe8 {+0.36/28 362485 860542718}
47. Qb2 {+1.00/12 49 5078} Kg8 {+0.00/28 635236 1508965618} 48. Qb4 {+1.00/12 234 5948} Kg7 {+0.28/28 1004408 2393359902}
49. Qb2 {+0.77/12 526 45523} Kg8 {+0.00/28 13105 32901313} 50. Ra7 {+0.74/12 280 46610} Kg7 {+0.00/28 43567 105705903}
51. Qb4 {+0.86/12 106 18234} Qc8 {+0.00/28 29747 69964927} 52. Qb2 {+0.78/12 337 17451} Qe8 {+0.00/28 36999 92220044}
53. Rb7 {+0.81/12 86 7967} Kh8 {+0.00/28 17263 41772049} 54. Rxb6 {+0.82/12 13 1867} Qg8 {+0.28/28 353070 929403990}
55. Qa3 {+0.89/12 104 8242} Qg4 {+0.28/28 224730 610551429} 56. Bxf5 {+0.88/12 98 9218} Qxf5 {+0.28/28 125540 376405278}
57. Nd2 {+0.51/12 391 36861} Qxf4 {+0.36/28 126696 396946472} 58. Qxe7 {+0.55/12 364 42748} Qg4+ {+0.36/28 80287 250232366}
59. Kd3 {+0.57/12 324 32467} Rh3+ {+0.36/28 93729 306902131} 60. f3 {+0.50/12 143 9851} Rxf3+ {+0.00/28 49605 163558712}
61. Kc2 {+0.49/12 117 8268} Rf2 {+0.00/28 142400 421991803} 62. Kc3 {+0.54/12 26 2228} Kh7 {+0.00/28 64400 203459809}
63. Rb7 {+0.02/12 988 77318} Kg6 {+0.00/28 126188 419708573} 64. Rxd7 {+0.03/12 101 18375} Qd1 {+0.00/28 382142 1119265119}
65. Kb4 {+0.03/12 39 4679} Qxd2+ {+0.00/28 151287 470916386} 66. Kc5 {+0.08/12 61 9367} Qa5 {+0.00/28 476591 1115243362}
67. Rb7 {+0.07/12 418 12312} Qc3+ {+0.00/28 1604572 4038552287} 68. Kd6 {+0.11/12 421 17459} Qxd4 {+0.00/28 193483 534453679}
69. Qd8 {+0.30/12 1051 78284} Qb4+ {+0.00/28 324117 921895913} 70. Kd7 {+0.13/12 467 55852} Qc5 {+0.00/28 572176 1636797254}
71. Qg8+ {+0.11/12 95 13443} Kf5 {+0.00/28 1369136 4024407351} 72. Qxf7+ {+0.00/12 115 13369} Kxe5 {+0.00/28 530756 1630682835}
73. Qh5+ {+0.00/12 62 6512} Kd4 {+0.00/28 1536349 4718354306} 74. b6 {+0.00/12 90 11086} Rf6 {+0.00/28 956321 2971292069}
75. Rb8 {+0.09/12 345 40175} e5 {+0.00/28 613978 1983461663} 76. Qd1+ {+0.00/12 153 20188} Kc4 {+0.00/28 189887 629842040}
77. Qc2+ {+0.00/12 26 3445} Kb4 {+0.00/28 192755 634420839} 78. Qb2+ {+0.01/12 108 10818} Kc4 {+0.00/28 8664 29210932}
79. Qc2+ {+0.01/12 10 1686} Kb4 {+0.00/28 228 547446} 80. Qxc5+ {+0.01/12 73 8201} Kxc5 {+0.00/28 1011 3510370}
81. b7 {+0.01/12 557 21909} Kb6 {+0.00/28 867 1969189} 82. Ke7 {+0.11/12 256 31877} Rh6 {+0.00/28 1845 6190337}
83. Rd8 {+0.12/12 22 5950} Kxb7 {+0.00/28 261 832742} 84. Rxd5 {+0.00/12 129 25154} e4 {+0.00/28 246 562462}
85. Rb5+ {+0.00/12 115 10979} Kc6 {+0.00/28 712 1923030} 86. Re5 {+0.00/12 14 4048} Rh4 {+0.00/28 95 283867}
87. Ke6 {+0.00/12 14 4429} Rf4 {+0.00/28 207 513072} 88. Ke7 {+0.00/12 13 2948} Rg4 {+0.00/28 300 1041170}
89. Ke6 {+0.00/12 32 6804} Rg6+ {+0.00/28 112 349845} 90. Kf5 {+0.01/12 48 8860} Rg1 {+0.00/28 151 577551}
91. Rxe4 {+0.01/12 146 33172} Ra1 {+0.00/28 111 464641} 92. Ke6 {+0.00/12 51 12781} Rb1 {+0.00/28 111 467836}
93. Re5 {-0.01/12 137 40527} Ra1 {+0.00/28 53 184131} 94. Rh5 {+0.00/12 58 11836} Rb1 {+0.00/28 175 891769}
95. Rh2 {-0.01/12 104 25586} Ra1 {+0.00/28 95 509407} 96. Rh8 {+0.00/12 81 28433} Rb1 {+0.00/28 76 435511}
97. Rc8+ {+0.00/12 33 9971} Kb7 {+0.00/28 89 479991} 98. Rc5 {+0.00/12 66 18533} Ra1 {+0.00/28 169 1039547}
99. Rb5+ {-0.03/12 87 27778} Ka6 {+0.00/28 107 497611} 100. Rb2 {-0.02/12 14 4820} Rc1 {+0.00/28 43 231897}
101. Ra2+ {+0.00/12 46 12533} Kb5 {+0.00/28 96 562884} 102. Ra8 {+0.00/12 43 10995} Rd1 {+0.00/28 70 412440}
103. Rb8+ {+0.00/12 25 7001} Ka4 {+0.00/28 78 465466} 104. Rg8 {+0.00/12 44 13603} Rb1 {+0.00/28 191 1126736}
105. Kd6 {+0.04/12 65 22405} Rc1 {+0.00/28 76 448749} 106. Ke5 {+0.27/12 57 16683} Rb1 {+0.00/28 77 363107}
107. Kd4 {+0.01/12 78 36533} Rc1 {+0.00/28 148 749063} 108. Kd3 {+0.02/12 81 26840} Rb1 {+0.00/28 346 1891701}
109. Ra8+ {+0.00/12 61 29029} Kb3 {+0.00/28 147 784629} 110. Rb8+ {+0.00/12 10 4380} Ka2 {+0.00/28 15 39629}
111. Ra8+ {+0.00/12 10 1191} Kb2 {+0.00/28 38 172437} 112. Rb8+ {+0.00/12 10 1917} Ka1 {+0.00/28 12 56893}
113. Ra8+ {+0.00/12 20 7717} Kb2 {+0.00/28 28 28} 114. Kd2 {+0.01/12 12 4428} Ra1 {+0.00/28 41 171726}
115. Rb8+ {+0.00/12 85 20970} Ka3 {+0.00/28 102 554289} 116. Ra8+ {+0.00/12 10 2384} Kb2 {+0.00/28 10 3605}
117. Rb8+ {+0.00/12 10 1958} Ka3 {+0.00/28 10 979} 118. Ra8+ {+0.00/12 10 1173} Kb2 {+0.00/28 10 523}
1/2-1/2

[/pgn]

[Damas Clásicas]

What kind of processor are you using for these tests, and approximately how long is each game taking?

I assume that in the case of SF dev, it’s playing instantly on every move, while the older SF version probably takes quite a while to reach depth 28 on all moves.

[jkominek]

What kind of processor are you using for these tests, and approximately how long is each game taking?

I assume that in the case of SF dev, it’s playing instantly on every move, while the older SF version probably takes quite a while to reach depth 28 on all moves.

I do not know spec of Uri's computer, but most of what you ask is found in the "tech" sections of his posts. For convenience I've gathered the information in one place, with median values appended. (Time/node/depth odds matches are interesting to me.)

Code: Select all

Match 1, 1:100 time odds
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    2     0      0     2  18+0.03     236K  909651  35.2   0.26  53.5    13.9     185,315       0.193
2. Stockfish 1.9.1 JA 64bit             2    0     0      2     0  1800+30   73595K 2564399  20.2  28.70  53.0  1521.0  78,122,597      30.331

Match 2, 1:1000 time odds
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     1      0   1.5 1.8+0.03      25K  551507  15.9   0.04  88.5     4.0      15,553       0.026
2. Stockfish 1.9.1 JA 64bit             2    0     1      1   0.5  1800+30   64393K 2896514  25.6  22.23  88.0  1956.3  64,577,359      21.363

Match 3, depth=10 vs. depth=20
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    2     0      0     2       --       7K  429597  11.0   0.02 111.0     1.8       3,472       0.010
2. Stockfish 1.9.1 JA 64bit             2    0     0      2     0       --   15869K 2505783  20.0   6.33 110.5   699.8   9,184,149       3.169

Match 4, depth=11 vs. depth=21
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    0     2      0     1       --      10K  518454  11.0   0.02 156.0     3.1       5,032       0.010
2. Stockfish 1.9.1 JA 64bit             2    0     2      0     1       --   16717K 2557862  21.0   6.54 156.0  1019.6   2,608,981       0.736

Match 5, depth=11 vs. depth=22
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     0      1     1       --      13K  429795  11.0   0.03  70.0     2.1       5,986       0.011
2. Stockfish 1.9.1 JA 64bit             2    1     0      1     1       --   75063K 2747586  22.0  27.32  70.0  1912.4  25,440,691       9.054

Match 6, depth=12 vs. depth=22
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     1      0   1.5       --      19K  618506  12.0   0.03 155.0     4.8      11,585       0.012
2. Stockfish 1.9.1 JA 64bit             2    0     1      1   0.5       --   26833K 2503697  22.0  10.72 154.5  1655.8   4,936,454       1.329

Match 7, depth=12 vs. depth=23
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     1      0   1.5       --      20K  420797  12.0   0.05 115.0     5.4      14,008       0.030
2. Stockfish 1.9.1 JA 64bit             2    0     1      1   0.5       --   97792K 2609385  23.0  37.48 114.5  4291.1  51,364,236      19.165

Match 8, depth=12 vs. depth=24
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    2     0      0     2      --       15K  468198  12.0   0.03  97.5     3.2       8,952       0.016
2. Stockfish 1.9.1 JA 64bit             2    0     0      2     0      --    75603K 2506954  24.0  30.16  97.0  2925.3  17,952,132       5.473

Match 9, depth=12 vs. depth=25
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     1      0   1.5       --      18K  273604  12.0   0.06 105.5     6.8       9,452       0.024
2. Stockfish 1.9.1 JA 64bit             2    0     1      1   0.5       --  177243K 2343403  25.0  75.63 105.0  7941.7  10,480,168       3.121

Match 10, depth=12 vs. depth=26
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     1      0   1.5       --      14K   76417  12.0   0.18  78.5    14.2       7,898       0.042
2. Stockfish 1.9.1 JA 64bit             2    0     1      1   0.5       -- 1142060K 3073710  26.0 371.56  78.0 28981.5 174,530,229      54.818

Match 11, depth=12 vs. depth=27
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     1      0   1.5       --      20K   86128  12.0   0.23  95.5    22.3      14,424       0.074
2. Stockfish 1.9.1 JA 64bit             2    0     1      1   0.5       --  492359K 2265664  27.0 217.31  95.5 20753.4  60,678,073      17.958

Match 12, depth=22 vs. depth=12
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    1     1      0   1.5       --    3470K 1454095  22.0   2.38  70.5   168.2   1,021,654        1.49
2. Stockfish dev-20251122-d9fd5165      2    0     1      1   0.5       --      20K  498043  12.0   0.04  70.5     2.8      14,243        0.02

Match 13, depth=12 vs. depth=28
#  name                             games wins draws losses score timectrl nodes/mv nodes/s depth sec/mv moves time(s) median n/mv median s/mv
1. Stockfish dev-20251122-d9fd5165      2    0     2      0   1.0       --   20,926          12.0   0.19                    16,683       0.083
2. Stockfish 1.9.1 JA 64bit             2    0     2      0   1.0       -- 631,939,377       28.0 261.23               163,558,712      51.494