[pgn]Of more concern though was what was recorded in Game 229. At move 30 Sugar played 30.Bc6 1.03/25 but in just three seconds, Stockfish 9 replied ..h3 -15.47/25 in its favour, a 16.5 point score difference, the biggest I have ever recorded between two top engines for a half ply difference. The game was quickly over with SugaR's next move 31.g3 #19/34 confirming the engine had blundered. I would immediately point out this is a Stockfish code related issue because within the game context, Stockfish 9 may also have played 30.Bc6 but unclear if SugaR would have played the reply when in analysis it needed to hit 34 ply before seeing ..h3 was winning and was actually #16. 30.Rhd1 may maintain the draw for White.
[Event "SugaR XPrO 1.4"]
[Site "Newport, South Wales"]
[Date "2018.03.16"]
[Round "77.1"]
[White "SugaR XPrO 1.4 64 POPCNT"]
[Black "Stockfish 9 64 POPCNT"]
[WhiteElo "3474"]
[BlackElo "3476"]
[ECO "D85"]
[Result "0-1"]
1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3
6. bxc3 Bg7 7. Nf3 c5 8. Be3 Qa5 9. Qd2 O-O 10. Rc1 Nd7
11. Bd3 {+0.50/27 35s} e5 {+0.05/25 14s } 12. d5 {+0.48/29
8s} f5 {0.00/29 2s} 13. Qc2 {+0.43/29 17s (Bh6)} f4
{0.00/33 28s} 14. Bd2 {+0.32/33 0s} b5 {-0.05/33 14s}
15. c4 {+0.36/33 0s} b4 {-0.17/32 17s} 16. O-O {+0.39/33
3s} Qc7 {-0.11/31 7s (Qb6)} 17. Bxb4 {+0.59/25 9s (a3)}
cxb4 {0.00/25 3s} 18. c5 {+0.70/24 5s} Qd8 {-0.25/28 27s
(Kh8)} 19. h3 {+0.72/27 19s} g5 {-0.28/29 0s} 20. d6
{+0.90/27 25s} Kh8 {-0.40/28 0s} 21. Bb5 {+1.12/24 4s} a6
{-0.52/29 21s (h5)} 22. Ba4 {+1.41/24 4s} h5 {-0.12/28 4s
(Nb8)} 23. h4 {+0.65/30 36s (c6)} g4 {-0.07/28 18s} 24. Ng5
{+0.50/30 0s} Bh6 {-0.13/28 9s} 25. c6 {+0.38/30 16s} Bxg5
{0.00/32 0s} 26. hxg5 {0.00/31 14s} Nb6 {0.00/34 34s}
27. c7 {0.00/32 0s (d7)} Qxg5 {0.00/30 5s} 28. Bc6 {0.00/32
0s} f3 {+0.07/27 6s} 29. Bxa8 {0.00/32 0s } h4 {0.00/30 10s
(fxg2)} 30. Bc6 {+1.03/25 5s} h3 {+15.47/25 3s (fxg2)}
31. g3 {-M38/34 37s (Qc5)} h2+ {+M38/36 5s} 32. Kh1
{-M30/41 0s} Qh5 {+M30/42 4s} 33. Qc5 {-M26/47 0s (Qb2)}
Rf7 {+M22/49 12s (Rf6)} 34. Qxe5+ {-M20/54 9s} Qxe5
{+M20/62 0s} 35. d7 {-M18/60 6s} Nxd7 {+M18/67 0s} 36. Rfd1
{-M16/63 4s (Bb5)} Qh5 {+M16/72 6s} 37. Bb5 {-M14/73 0s}
axb5 {+M14/83 6s} 38. Rd5 {-M12/92 2s} Qh3 {+M12/106 5s}
39. Rh5+ {-M10/90 19s} Qxh5 {+M10/125 7s} 40. Rc6 {-M8/119
14s} Qh3 {+M8/127 0s} 41. Rh6+ {-M6/127 0s} Qxh6 {+M6/127
0s} 42. a3 {-M4/127 0s (e5)} Qh3 {+M4/127 0s (Qc1+)} 43. a4
{-M2/127 0s (axb4)} Qg2# {+M2/127 0s} 0-1
[/pgn]
Sugar played 30. Bc6 but so does Stockfish. After the reply 30... h3 the Stockfish family can resign, it goes Mate.
[D]B1b2r1k/2P5/pn1P4/4p1q1/1p2P1pp/5p2/P1Q2PP1/2R2RK1 w - -
Engine: Kaissa III (i7 6700, 1 thread, 512 MB)
by T. Romstad, M. Costalba, J. Kiiski, G. Linscott
17/34 0:01 -0.67 30.Bc6 fxg2 31.Rfe1 Kh7 32.d7 Nxd7
33.Bxd7 Bxd7 34.Qc5 Kg7 35.Rcd1 Be6
36.Rd6 Qf6 37.c8R Rxc8 38.Qxc8 Bxc8
39.Rxf6 Kxf6 40.Kxg2 Ke6 (3.926.859) 2064
18/36 0:02 -0.55 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.d7 Nxd7
36.Bxd7 g2 37.Qh3 Rf1+ 38.Rxf1 gxf1R+
39.Kxf1 Qxc1+ 40.Ke2 Qc2+ 41.Ke1 Qxe4+
42.Kf1 (5.139.476) 2090
19/33 0:03 -0.29++ 30.Bc6 (6.729.727) 2070
19/33 0:03 -0.13++ 30.Bc6 (7.764.526) 2080
19/33 0:04 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (8.829.431) 2083
20/16 0:05 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (11.261.148) 2097
21/16 0:06 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (13.725.678) 2109
22/16 0:08 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (17.397.578) 2110
23/16 0:10 0.00 30.Bc6 fxg2 31.Rfe1 g3 32.fxg3 hxg3
33.Qxg2 Rf2 34.Qh1+ Kg7 35.Rcd1 Rh2
36.Qf3 Rf2 37.Qh1 (22.671.831) 2133
24/16 0:13 -0.07-- 30.Bc6 h3 (29.373.971) 2134
24/37 0:19 0.00++ 30.Rfd1 (42.029.689) 2117
24/37 0:21 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (45.971.648) 2121
25/25 0:28 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (60.863.348) 2123
26/25 0:31 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (67.664.224) 2125
27/25 0:48 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (104.246.927) 2153
28/25 1:38 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (218.467.717) 2223
29/25 2:49 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (385.194.654) 2269
30/25 4:28 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (623.672.483) 2320
31/25 7:05 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.006.025.967) 2365
32/25 10:35 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.523.796.857) 2397
33/25 13:35 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (1.942.680.541) 2381
34/25 19:00 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (2.704.115.392) 2371
35/25 23:34 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (3.307.733.353) 2338
36/25 50:05 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (7.209.498.901) 2398
37/25 60:25 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (8.716.003.861) 2404
38/25 127:18 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (18.987.226.607) 2485
39/40 185:52 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kg7 41.Qxg2+ Rg6
42.c8Q Qd1+ 43.Kh2 (28.436.231.032) 2549
40/36 251:16 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kg6
42.Qe8+ Rf7 43.c8Q (38.979.111.459) 2585
41/36 442:43 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kg6
42.Qe8+ Rf7 43.c8Q (70.408.167.935) 2650
42/25 692:40 0.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (110.452.116.371) 2657
43/25 1271:340.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (200.032.086.289) 2621
44/25 1424:430.00 30.Rfd1 g3 31.Qd2 Qh5 32.d7 Nxd7
33.Rc6 gxf2+ 34.Qxf2 fxg2 35.Qd2 Nf6
36.Rxf6 Rxf6 37.Qd8+ Kg7 38.Rd7+ Bxd7
39.Qxd7+ Kh6 40.Qd2+ Kh7 41.Qd7+ Kh6 (224.532.187.990) 2626
best move: Rf1-d1 time: 1424:43.437 min n/s: 2.626.617 nodes: 224.532.187.990