Colossus 2021b now available

[MartinBryant]

Game 1 (Banksia GUI)

[pgn]
[Event "Computer event"]
[Site "Somewhere on Earth"]
[Date "2021.10.18"]
[Round "2"]
[White "Zarkov 6.55"]
[Black "Colossus 2021b"]
[Result "0-1"]
[TimeControl "900+1"]
[Time "16:22:41"]
[Board "1"]
[Termination "mate"]
[ECO "D15"]
[Opening "QGD Slav"]

1. Nf3 Nf6 2. c4 c6
3. d4 d5 4. Nc3 {D15: QGD Slav, 4.Nc3} Bf5
5. Qb3 Qb6 {End of opening} 6. c5 {+0.01/1 5489} Qxb3 {+0.31/23 447175 784468753}
7. axb3 {+0.25/16 83371 112452832} Ne4 {+0.23/23 676928 1136512823} 8. Nh4 {+0.37/19 285525 424469893} Bc8 {+0.06/23 413998 701965065}
9. f3 {+0.36/19 285525 419527880} Nxc3 {-0.07/22 179168 312173040} 10. bxc3 {+0.32/19 106349 379380884} e5 {-0.06/23 533434 939012997}
11. e4 {+0.26/19 29 681427543} g6 {-0.07/20 184205 320575027} 12. Bd3 {+0.21/16 123439 393207395} Be6 {-0.14/19 170147 288848843}
13. O-O {+0.18/16 316859 436852693} Bg7 {-0.15/21 451271 730670409} 14. Be3 {+0.16/17 21 580976760} O-O {-0.20/21 286471 466758107}
15. Ra4 {+0.13/17 47984 454109942} Rd8 {-0.11/20 302303 494644946} 16. Bc2 {+0.04/17 49003 471954372} Na6 {-0.31/20 214687 345084743}
17. Rfa1 {+0.10/17 528793 1017118947} Nc7 {-0.81/19 178355 282966100} 18. dxe5 {-0.32/18 1201565 1787690243} Bxe5 {-1.06/21 151768 235285292}
19. Bd4 {-0.55/17 110408 391935682} Bxd4+ {-1.29/23 87069 150392341} 20. cxd4 {-0.79/19 41332 192335669} Nb5 {-1.61/24 256280 458735741}
21. e5 {-0.99/19 17 369503130} Nc3 {-1.62/24 92309 173930263} 22. Rb4 {-1.30/19 160570 389446838} a5 {-1.71/24 93768 164130967}
23. Rxb7 {-1.43/19 149138 365800542} Ne2+ {-1.50/23 69010 125807295} 24. Kf2 {-1.60/19 164637 345792168} Nxd4 {-1.69/24 65850 119416859}
25. Bd1 {-1.52/19 157569 326799634} g5 {-1.96/24 101432 181133915} 26. Ra4 {-1.71/19 112202 293758756} Nb5 {-2.04/23 84714 156559953}
27. Bc2 {-1.82/18 121970 283482880} gxh4 {-2.03/22 98492 179648714} 28. Rxh4 {-2.04/18 100630 258471325} h6 {-1.99/20 62944 117122025}
29. Rb6 {-1.87/17 192906 248863916} Kg7 {-2.22/21 133873 249788794} 30. Bd3 {-2.01/17 180911 239697606} Nc3 {-2.37/21 207544 390981530}
31. Rxc6 {-2.16/16 15 245449497} Rdb8 {-2.60/21 104367 190709860} 32. Rb6 {-2.42/16 65353 196443878} Rxb6 {-2.68/23 123270 234717742}
33. cxb6 {-2.71/19 28319 196677276} Rb8 {-2.88/23 50769 101321216} 34. Ke3 {-2.75/18 113221 225668757} Rxb6 {-3.16/24 57799 113460545}
35. Bc2 {-2.74/18 99175 224513389} a4 {-3.14/24 70473 146553620} 36. bxa4 {-2.49/19 150846 223934848} Rb2 {-3.23/24 64366 123802920}
37. Kd3 {-2.96/18 77109 190843063} Na2 {-3.23/22 33166 63981939} 38. Bd1 {-3.09/18 103550 190548200} Rxg2 {-3.23/22 62309 118474742}
39. Rf4 {-3.27/17 67998 176280189} Rxh2 {-3.79/23 67516 123888904} 40. a5 {-3.68/18 58607 173221161} Bd7 {-3.79/21 51607 95495812}
41. Ke3 {-4.02/20 970912 1460500559} Nc3 {-4.52/25 450539 802332371} 42. Bb3 {-4.46/19 61362 702590510} Ne2 {-4.54/23 250819 463031350}
43. Rf6 {-4.51/19 257307 681306325} Be6 {-4.78/24 504686 952297642} 44. Ba4 {-4.70/19 20 676378655} d4+ {-5.27/24 498242 910869588}
45. Kd3 {-4.60/19 492179 739234432} Nc1+ {-5.38/24 189002 338902914} 46. Kxd4 {-4.52/19 461480 723084604} Ra2 {-5.47/24 504444 928823962}
47. Bb5 {-4.84/19 20 763446601} Rxa5 {-5.50/23 232315 440862874} 48. Bf1 {-4.83/19 200436 701361364} Nb3+ {-5.96/24 285465 503298698}
49. Kc3 {-5.25/20 420292 709891921} Rxe5 {-6.21/26 322571 576370521} 50. Rf4 {-6.15/19 394089 644619384} Re3+ {-6.31/24 174203 331335000}
51. Kc2 {-6.22/20 195310 570103531} Rxf3 {-16.84/24 271869 483697197} 52. Rxf3 {-6.41/20 85499 511718833} Nd4+ {-158.00/30 129852 231419703}
53. Kd2 {-6.56/19 222237 508997749} Nxf3+ {-158.00/30 152174 293618122} 54. Ke3 {-6.76/19 186086 487882112} Kf6 {-158.00/28 245707 519570426}
55. Kxf3 {-3.20/23 326699 548459812} h5 {-3.15/36 129426 484885975} 56. Kf4 {-2.87/25 306344 533516706} h4 {-4.34/37 201656 747863338}
57. Bg2 {-2.94/24 85599 479597736} Ke7 {-4.57/37 100968 323855953} 58. Be4 {-3.15/24 186062 497957811} f6 {-6.56/35 185081 603514060}
59. Bd3 {-3.24/24 85316 425900173} Kd6 {-7.55/37 191790 681813962} 60. Bf1 {-3.56/24 265139 459371214} h3 {-4.92/34 117879 330325935}
61. Kg3 {-3.07/27 248635 522466203} Kc5 {-7.05/43 97577 315708318} 62. Kh2 {-3.30/27 135576 465652138} Kd4 {-7.96/43 86530 280041015}
63. Kg3 {-3.20/26 138204 455004750} Bf5 {-8.20/43 163217 547227669} 64. Kh2 {-3.32/26 52940 404235946} Ke4 {-8.08/41 253043 896655912}
65. Bc4 {-4.24/27 877569 1874158104} Kf4 {-7.71/38 106571 416160148} 66. Be2 {-5.00/26 233514 456567470} Bg4 {-7.70/34 70728 257555936}
67. Bc4 {-13.09/25 414569 750106121} f5 {-19.63/35 827419 2073457345} 68. Ba2 {-12.18/25 117763 218274131} Ke5 {-158.00/29 41997 100595539}
69. Bb3 {+0.01/1 10} f4 {-158.00/29 43785 103387955} 70. Ba2 {+0.01/1 10} f3 {-158.00/24 47501 110948851}
71. Bb3 {+0.01/1 10} f2 {-158.00/24 40534 92093020} 72. Ba2 {+0.01/1 10} f1=Q {M+8/33 40334 102776737}
73. Bb3 {+0.01/1 10} Qg2# {M+1/120 34649 3006134} 0-1[/pgn]

I love black's 54th move Kf6, where it just gives away a whole knight to get into an EGTB win!

[AdminX]

Game 2

[pgn]
[Event "banksia game"]
[Date "2021.10.19"]
[White "Colossus 2021b"]
[WhiteElo "48"]
[Black "Zarkov 6.55"]
[Result "1/2 - 1/2"]
[TimeControl "40/7200+1"]
[Time "00:20:37"]
[Termination "*"]
[ECO "D15"]
[Opening "QGD Slav"]

1. Nf3 Nf6 2. c4 c6
3. d4 d5 4. Nc3 {D15: QGD Slav, 4.Nc3} Bf5
5. Qb3 Qb6 {End of opening} 6. c5 {+0.32/23 412592 720588090} Qxb3 {+0.25/18 265927 371979919}
7. axb3 {+0.27/21 264194 426453055} Nbd7 {+0.30/18 3532 345253924} 8. h3 {+0.28/23 504661 806790796} Ne4 {+0.24/18 21 670149725}
9. g4 {+0.22/24 614261 1034496898} Bg6 {+0.11/18 289892 412477464} 10. Bf4 {+0.31/22 443706 768465718} f6 {+0.06/18 371765 517108044}
11. b4 {+0.41/21 270524 462140016} Nxc3 {+0.07/18 15644 367573567} 12. bxc3 {+0.38/22 207961 356713313} Be4 {+0.07/18 91086 377870457}
13. Rg1 {+0.38/21 256064 442412299} e5 {+0.01/17 416086 526615418} 14. dxe5 {+0.36/21 126772 219603455} Bxf3 {+0.00/19 303842 414837984}
15. exf3 {+0.29/23 242985 450894869} fxe5 {+0.04/18 60849 370114489} 16. Bd2 {+0.31/23 452566 830225757} Be7 {+0.01/18 318134 410492062}
17. Bd3 {+0.30/20 249174 457918016} O-O {+0.03/17 153133 501015248} 18. Bf5 {+0.45/20 117876 205335869} Rfd8 {+0.07/17 308632 414557345}
19. Kf1 {+0.38/21 246119 431294546} Kf7 {+0.02/17 289401 397113621} 20. g5 {+0.39/22 250540 448884928} a5 {-0.01/17 20824 350325041}
21. Kg2 {+0.30/22 198707 349915981} Nf8 {-0.03/18 71419 374324869} 22. Rge1 {+0.35/22 233140 407380169} axb4 {+0.03/18 32584 356396383}
23. cxb4 {+0.37/23 123544 222291399} Rxa1 {+0.00/19 140205 376285470} 24. Rxa1 {+0.44/23 55447 107359057} Ne6 {+0.14/19 199602 367603274}
25. Ra7 {+0.31/23 118741 234866294} Nd4 {+0.02/18 123892 336867330} 26. Bd3 {+0.74/23 102539 197131629} Rb8 {-0.12/18 234963 342583519}
27. h4 {+0.76/23 105023 202298103} h6 {-0.16/18 115311 307072514} 28. gxh6 {+0.86/21 88060 172347105} gxh6 {+0.04/18 213197 293533062}
29. h5 {+0.61/22 70120 137182799} Ke6 {+0.00/18 129809 265923213} 30. Bxh6 {+0.83/23 65045 127579854} Rg8+ {+0.00/18 126830 251385287}
31. Bg6 {+0.69/25 125422 249600758} Nf5 {+0.11/19 58591 231361362} 32. Bc1 {+0.79/24 114981 228194297} Nh4+ {+0.27/18 65430 225270148}
33. Kf1 {+0.79/23 55061 108312429} Nxf3 {+0.15/18 121324 225791957} 34. Rxb7 {+0.74/20 41617 82438388} Ra8 {+0.15/18 127246 209705038}
35. Kg2 {+0.89/21 74165 145116939} Nh4+ {+0.18/17 86813 198581100} 36. Kh3 {+0.88/22 73903 140602671} Nxg6 {+0.28/19 81710 196113112}
37. hxg6 {+0.74/21 33975 59060056} Rh8+ {+0.19/18 116591 193104395} 38. Kg4 {+0.65/21 63000 99371790} Rh1 {+0.20/17 80339 183485650}
39. Bb2 {+0.73/21 58367 111965338} Rg1+ {+0.22/17 138396 172401461} 40. Kh3 {+0.73/20 30779 56638058} Rxg6 {+0.18/18 99017 163718772}
41. Rc7 {+0.02/26 1262602 2416240943} Rh6+ {+0.01/20 24 1601229100} 42. Kg2 {+0.31/26 319121 660239059} Rh4 {+0.00/20 254607 767709531}
43. Rxc6+ {+0.22/25 456377 953185874} Kf5 {+0.00/20 101504 713902772} 44. Ba3 {+0.21/24 357581 728726728} Rc4 {+0.00/19 194021 706781351}
45. Rc7 {+0.18/24 591827 1117401548} Ke6 {+0.00/19 539542 723279642} 46. b5 {+0.01/23 272104 550395642} Rc3 {+0.00/20 505885 675205034}
47. Bb2 {+0.01/26 330160 621001891} Rb3 {+0.00/21 474327 650935173} 48. Bxe5 {+0.01/26 124028 219841053} Bxc5 {+0.00/22 320712 647714539}
49. Rxc5 {+0.01/29 291909 542826873} Kxe5 {+0.00/24 424762 687232433} 50. Kf1 {+0.00/39 292567 519243278} Kd4 {-0.02/24 398281 710212027}
51. Rc8 {+0.00/42 107827 231021907} Rxb5 {-0.15/23 373454 701930007} 52. Kg2 {-0.01/31 262095 667114478} Rb7 {-0.20/23 350168 625530124}
53. Kf3 {-0.01/29 228648 586565536} Rf7+ {-0.19/23 328352 611071079} 54. Ke2 {-0.01/29 102607 275933518} Re7+ {-0.18/23 205276 616363286}
55. Kd2 {-0.01/31 84773 224652622} Ra7 {-0.10/23 362556 730996238} 56. Rc1 {-0.01/31 131205 346955749} Ra2+ {-0.04/23 272525 575116782}
57. Rc2 {-0.01/33 95336 254692409} Ra3 {-0.03/23 160218 526510552} 58. Rc6 {-0.01/34 190544 512636620} Ra2+ {-0.03/22 55049 444386554}
59. Rc2 {-0.01/40 160514 448177656} Ra3 {-0.03/22 81701 478495948} 60. Rc6 {-0.01/34 118342 322615410} Rd3+ {-0.01/23 237187 486869987}
61. Ke2 {-0.01/32 76879 202636572} Rb3 {-0.01/23 145535 446265500} 62. Rc8 {-0.01/31 154510 387853846} Rb2+ {-0.10/22 213385 402897717}
63. Kf3 {-0.01/31 79440 200680419} Kd3 {-0.10/22 120660 334654822} 64. Rd8 {-0.01/30 80727 193622328} d4 {-0.02/22 192629 336797365}
65. Rc8 {-0.01/29 101243 237063157} Rc2 {-0.80/20 180659 297469553} 66. Rd8 {-0.01/33 139678 341663583} Kc3 {-0.68/21 169425 283841772}
67. Rc8+ {-0.01/28 49045 113314310} Kd2 {-0.78/21 109847 259601934} 68. Rd8 {-0.01/28 122628 295186524} Kc3 {+0.00/21 29458 266133237}
69. Rc8+ {-0.01/31 38788 97698503} Kd3 {-0.50/22 150318 263372710} 70. Rd8 {-0.01/33 56352 154234174} Rc4 {-0.11/21 84624 250900171}
71. Kf4 {-0.01/30 81723 206836414} Ke2 {-0.40/20 54028 220767678} 72. Re8+ {-0.01/30 34500 83270501} Kd2 {-0.40/20 97936 184533410}
73. Rd8 {-0.01/27 83139 194041443} d3+ {-0.40/20 43241 201616542} 74. Ke5 {-0.01/25 51944 121780370} Ke2 {-0.13/20 217312 343702135}
75. f4 {-0.01/25 32364 76976537} Ke3 {-0.20/20 77852 159502219} 76. Rxd3+ {+0.01/31 38018 85884071} Kxd3 {-10.50/21 31642 89984829}
77. f5 {-2.74/36 35067 138296406} Rc5+ {-99.66/22 68434 284594251} 78. Ke6 {-2.76/38 39908 141050503} Ke4 {-99.74/23 99294 341745620}
79. f6 {-2.76/37 44007 153790028} Rc6+ {-99.76/22 49134 358467801} 80. Ke7 {-2.76/37 55715 191916292} Ke5 {-99.78/21 53872 202064154}
81. f7 {-2.76/38 332598 1219065792} Rc7+ {-99.84/15 458 1223274} 82. Ke8 {-2.76/41 218259 812849618} Rc8+ {-99.70/24 536903 1998412266}
83. Ke7 {-0.01/47 316607 998352350} Rc7+ {-0.73/31 503373 1536632618} 84. Ke8 {+0.00/45 454750 1444733475} Ke6 {-0.73/31 17258 1318832897}
85. f8=N+ {-2.73/38 232226 802894583}
[/pgn]

I ended the game here as it is a known drawn ending.

[AdminX]

Now Streaming Colossus vs Spike (1 CPU/1Thread)

TC: 40 Moves in 15 Minutes (20) Games)

[Scally]

Thanks Martin,

It’s running nicely as a Remote Engine on Picochess:

https://www.dropbox.com/s/p9iaj0tapvf3v ... 9.mov?dl=0


Al.

[Rebel]

Running Colossus 2021b for the Gambit Rating List

Games : 1200

Elo pool : 2767

http://rebel13.nl/b/grl.htm

[Rebel]

Estimated elo gain for Colossus 2021b : +35

Code: Select all

Gambit Rating List
Running      : Gauntlet Colossus 2021b
Time Control : Time control : 40/120
Games        : 1200

Results from file gauntlet-Colossus.pgn:

No. Name            Win Draw Loss Unf.  Score Games       %
-----------------------------------------------------------
  1 Colossus 2021b +407 =337 -456   *0  575.5  1200   48.0%
  2 Nalwald 1.14    +96  =55  -49   *0  123.5   200   61.8%
  3 Zahak 6.0       +85  =58  -57   *0  114.0   200   57.0%
  4 ProDeo 3.1      +76  =54  -70   *0  103.0   200   51.5%
  5 Orion 07        +64  =64  -72   *0   96.0   200   48.0%
  6 Mantissa 2.5.0  +70  =51  -79   *0   95.5   200   47.8%
  7 Velvet 1.2.0    +65  =55  -80   *0   92.5   200   46.2%

Total Games:    1200
White Wins:      424 (35.3%)
Black Wins:      439 (36.6%)
Draws:           337 (28.1%)
Unfinished:        0 (0.0%)

Estimated elo gain for Colossus_2021b
Elo pool : 2767
Colossus 2021a : 2719.0
Colossus_2021b : 2754.5
Difference : 35.5

[Krzysztof Grzelak]

Huge request to Mr. Martin. Can I ask for a checkers program Colossus Draughts. I know this is a chess forum, but I wanted to ask you if there is an opportunity.

[MartinBryant]

Huge request to Mr. Martin. Can I ask for a checkers program Colossus Draughts. I know this is a chess forum, but I wanted to ask you if there is an opportunity.

Wow!
I haven't touched my draughts program in over 25 years
I do know from a friend that the last released version won't run effectively on modern hardware as it overflows its arrays within a fraction of a second and crashes
I would be lying however if I said that I hadn't at least thought about updating it
It took Thorsten and others many years of nagging me to update my chess program so who knows... but please don't hold your breath

P.S. You do know that there are several other incredibly powerful draughts/checkers programs out there now don't you?

[F.Huber]

I haven't touched my draughts program in over 25 years
I do know from a friend that the last released version won't run effectively on modern hardware as it overflows its arrays within a fraction of a second and crashes

Well, it's working without any problems here in DosBox (even under Win10 64bit)!

[Krzysztof Grzelak]

I'm counting on Mr. Martin. With all your heart and soul that you will make a new version of the checkers program. Yes, it is true that there are other checkers software.