v0.2.0

Strength Evaluation v0.2.0

CrazyAra played all common available open-source Crazyhouse chess engines.

Hardware Setup:

• Memory (RAM): 31,4 GiB
• Processor - AMD® Ryzen 7 1700 eight-core processor × 16
• Graphics - GeForce GTX 1080 Ti/PCIe/SSE2
• OS type - 64-bit

The various Alpha-Beta engines achieved a Node per Seconds of ~700,000-2,000,00.

CrazyAra v0.2.0 using MCTS had a Node per Seconds of 30-70 using both CPU and GPU.

Result Overview

All these matches have been conducted using 5min/40 moves time control.

Hyperparameter Settings for MCTS:

• threads - 8
• cpuct - 1
• playouts_empty_pockets - 256
• playouts_filled_pockets - 512
• playouts_update_stats - 256
• max_search_depth - 40
• max_search_time_s - 30
• dirichlet_alpha - 0.2
• dirichlet_epsilon - 0.1
• threshold_time_for_raw_net_ms - 30,000

Engine Name	Estimated Elo	Link
Sjeng 11.2	2300	https://github.com/gcp/sjeng, https://sjeng.org/download.html
Crazywa 0.1.1	2349.11	http://computer-chess.org/doku.php?id=computer_chess:wiki:lists:variants_engine_list
SjaakII 1.4.1	2353.87	sudo apt-get install sjaakii, http://www.chess2u.com/t5010-sjaak
Sunsetter 8	2600	https://sourceforge.net/projects/sunsetter/files/latest/download
Stockfish 2018-10-13	3946.06	https://github.com/ddugovic/Stockfish

The elo estimates are taken from according to this tournament: https://lichess.org/forum/team-crazyhouse-engine-development-and-game-analyses/swiss-crazyhouse-tournament?page=3

WHITE	BLACK	WINNER
Sjeng 11.2	CrazyAra 0.2	CrazyAra 0.2
CrazyAra 0.2	Sjeng 11.2	CrazyAra 0.2
Crazywa 0.1.1	CrazyAra 0.2	CrazyAra 0.2
CrazyAra 0.2	Crazywa 0.1.1	CrazyAra 0.2
SjaakII 1.4.1	CrazyAra 0.2	CrazyAra 0.2
CrazyAra 0.2	SjaakII 1.4.1	CrazyAra 0.2
Sunsetter 8	CrazyAra 0.2	Sunsetter 8
CrazyAra 0.2	Sunsetter 8	Sunsetter 8
CrazyAra 0.2	Sunsetter 8	CrazyAra 0.2
Stockfish 2018-10-13	CrazyAra 0.2	Stockfish 2018-10-13
CrazyAra 0.2	Stockfish 2018-10-13	Stockfish 2018-10-13

Some Example Games

Reading the PGN-Annotations:

1. e3 {+0.80/10 6.5s} -> {MV_NUMBER} {SCORE}/{DEPTH} {ELAPSED_TIME}

• Sjeng - CrazyAra

[Date "2018.10.21"]
[White "sjeng"]
[Black "CrazyAra"]
[Result "0-1"]
[PlyCount "52"]
[TimeControl "40/300"]
[Variant "crazyhouse"]

1. e3 {+0.80/10 6.5s} Nf6 {+0.01/7 4.5s} 2. Bc4 {-0.20/9 5.9s} d5 {-1.52/7 3.9s}
3. Bb5+ {-0.47/9 12s} Bd7 {-1.67/8 4.2s} 4. Bxd7+ {-0.48/9 15s}
Nbxd7 {-2.84/8 12s} 5. Nc3 {-0.43/9 6.6s} e5 {-2.66/6 9.2s}
6. Qe2 {-0.88/8 6.5s} Bb4 {-4.13/5 9.3s} 7. B@g5 {-1.07/8 6.5s}
O-O {-2.21/7 8.7s} 8. Nxd5 {+1.03/9 5.6s} Nxd5 {-3.56/8 13s}
9. Bxd8 {+1.47/8 5.3s} Raxd8 {-3.38/6 12s} 10. P@c4 {+1.09/8 8.0s}
N5f6 {-6.54/7 9.9s} 11. Q@b5 {+0.67/9 6.9s} B@c6 {-10.20/7 8.9s}
12. Qxb4 {+2.22/10 6.6s} Bxg2 {-9.40/6 10.0s} 13. B@f3 {+2.22/9 6.5s}
Bxf3 {-10.27/6 9.7s} 14. Nxf3 {+3.06/9 6.5s} e4 {-9.21/6 9.8s}
15. Qxb7 {+1.95/8 6.5s} exf3 {-9.83/7 11s} 16. Qexf3 {+1.97/8 6.5s}
B@g4 {-11.38/4 11s} 17. Qxg4 {+1.01/8 6.5s} Nxg4 {-7.91/6 12s}
18. P@e7 {+0.01/6 9.7s} P@e2 {-15.26/6 11s} 19. Kxe2 {+1.44/6 16s}
N@f4+ {-13.88/11 9.4s} 20. exf4 {-M11/6 9.9s} N@d4+ {-14.25/13 9.7s}
21. Kf1 {-M9/7 8.9s} Q@e2+ {-21.59/11 9.2s} 22. Kg2 {-M11/6 7.2s}
Qxf2+ {-18.34/11 9.8s} 23. Kh3 B@g2+ {-18.11/8 9.4s} 24. Qxg2 {-M7/7 6.7s}
Qxg2+ {-25.34/13 6.8s} 25. Kxg2 {-M5/7 6.5s} Q@f3+ {-52.54/11 10s} 26. Kg1
Ne2# {-M1/1 0.46s, Black mates} 0-1

• CrazyAra - CrazyWa

[Date "2018.10.21"]
[White "CrazyAra"]
[Black "crazywa"]
[Result "1-0"]
[PlyCount "63"]
[TimeControl "40/300"]
[Variant "crazyhouse"]

1. e4 {+1.18/9 4.2s} d5 {-0.33/11 4.7s} 2. exd5 {+1.53/8 4.3s}
Qxd5 {-0.61/11 9.6s} 3. Nc3 {+1.71/10 11s} Qe6+ {-0.64/9 6.5s}
4. Be2 {+2.38/10 11s} Nf6 {-0.83/10 24s} 5. d4 {+3.01/9 10s} Qf5 {-0.78/9 6.4s}
6. Nf3 {+2.95/8 9.6s} Qg4 {-0.86/9 5.2s} 7. Rg1 {+3.67/10 9.6s}
Nc6 {-1.15/9 7.0s} 8. d5 {+5.87/7 9.1s} Nb4 {-1.26/9 5.0s} 9. a3 {+7.99/8 11s}
Na6 {-2.07/9 5.0s} 10. Ne5 {+9.92/6 9.1s} Qh4 {-2.60/10 7.6s}
11. Bxa6 {+8.62/9 9.8s} bxa6 {-3.00/9 8.2s} 12. N@f3 {+8.70/6 10s}
Qh5 {-3.87/9 5.4s} 13. Nxf7 {+9.65/8 9.7s} P@e2 {-6.13/9 9.9s}
14. Qxe2 {+13.53/10 11s} Qxf7 {-10.72/10 16s} 15. P@e6 {+15.36/7 9.9s}
Qh5 {-9.06/9 5.5s} 16. P@d7+ {+11.90/6 10s} Bxd7 {-6.62/9 8.0s}
17. exd7+ {+13.21/6 11s} Kd8 {-7.50/8 6.2s} 18. B@c6 {+14.69/4 9.8s}
P@b7 {-9.43/8 25s} 19. Bxb7 {+15.52/4 8.8s} Rb8 {-8.61/8 4.2s}
20. Ne5 {+15.73/3 9.2s} Qxe5 {-27.03/8 5.6s} 21. Qxe5 {+16.21/6 9.5s}
B@d2+ {-M14/9 5.7s} 22. Bxd2 {+22.99/6 12s} Nxd7 {-M12/9 5.8s}
23. B@c6 {+23.21/5 10s} N@d3+ {-M18/7 7.4s} 24. cxd3 {+26.56/9 11s}
N@c2+ {-M12/13 4.8s} 25. Kf1 {+28.96/11 11s} P@e2+ {-M10/16 3.4s}
26. Nxe2 {+32.27/10 9.3s} Ne3+ {-M8/98 2.1s} 27. Bxe3 {+38.56/8 7.9s}
Rxb7 {-M6/98 0.80s} 28. N@e6+ {+38.84/7 9.5s} Ke8 {-M4/15 0.086s}
29. Bxd7+ {+41.71/7 9.3s} Kf7 {-M4/8 0.010s} 30. Ng5+ {+47.65/5 9.0s}
Kg6 {-M4/8 0.009s} 31. Q@f7+ {+50.43/4 9.2s} Kh6 {-M2/3 0.004s}
32. N@g4# {+M1/1 0.45s, White mates} 1-0

• SjakII - CazyAra

[Date "2018.10.21"]
[White "sjaakii"]
[Black "CrazyAra"]
[Result "0-1"]
[PlyCount "82"]
[TimeControl "40/300"]
[Variant "crazyhouse"]

1. Nf3 {+0.14/13 7.0s} Nf6 {+0.35/9 4.5s} 2. d4 {+0.14/12 4.2s}
d5 {+0.33/7 4.1s} 3. Bf4 {+0.15/11 3.9s} Bf5 {+0.31/8 4.5s}
4. e3 {+0.11/11 7.4s} e6 {+0.67/8 4.2s} 5. Bb5+ {+0.11/9 4.9s}
Nbd7 {+0.49/10 5.4s} 6. O-O {+0.14/10 4.4s} Bd6 {-0.14/10 4.6s}
7. Ne5 {+0.06/10 5.8s} O-O {+0.04/9 4.5s} 8. Bxd7 {+0.73/10 5.0s}
Nxd7 {-2.15/11 14s} 9. N@h6+ {+0.23/10 7.2s} gxh6 {-2.82/11 16s}
10. Nxd7 {+0.80/10 11s} B@g7 {-3.33/12 12s} 11. Bxd6 {+1.07/9 4.5s}
cxd6 {-4.40/10 14s} 12. Nxf8 {+1.14/9 5.8s} Qxf8 {-6.71/6 12s}
13. Nc3 {+1.11/9 7.5s} N@h4 {-7.39/5 11s} 14. Qh5 {+1.83/9 8.2s}
Nxg2 {-10.28/5 12s} 15. Nxd5 {+1.16/8 7.9s} exd5 {-11.16/4 12s}
16. Qxf5 {+0.91/9 8.2s} Nh4 {-16.36/5 12s} 17. N@f6+ {-2.34/8 7.3s}
Bxf6 {-13.54/8 15s} 18. Qg4+ {-2.71/8 8.3s} Qg7 {-17.66/4 13s}
19. Qxg7+ {-2.87/7 4.2s} Bxg7 {-19.40/10 17s} 20. Q@h3 {-5.48/8 8.2s}
N@f3+ {-18.64/7 13s} 21. Kh1 {-7.58/9 8.4s} P@g2+ {-12.70/6 13s}
22. Qxg2 {-4.33/2 0.001s} Nxg2 {-12.39/4 12s} 23. R@g3 {-7.32/8 4.7s}
Ngh4 {-11.49/2 11s} 24. P@g2 {-8.02/9 6.7s} N@e4 {-12.56/3 12s}
25. Rxf3 {-10.52/9 9.0s} Nxf3 {-15.55/3 12s} 26. B@g1 {-10.90/8 5.4s}
Nxg1 {-16.47/3 13s} 27. N@f4 {-11.23/8 5.8s} B@f3 {+12.70/1 0.037s}
28. Kxg1 {-10.85/9 9.9s} Bxg2 {+16.66/1 0.026s} 29. B@h1 {-12.84/8 9.9s}
Bxh1 {+20.97/1 0.036s} 30. P@g6 {-14.87/8 9.9s} hxg6 {+22.57/1 0.035s}
31. N@e7+ {-18.18/8 10.0s} Kh7 {+19.34/1 0.027s} 32. Kxh1 {-M10/8 14s}
B@f3+ {+18.90/1 0.026s} 33. B@g2 {-M10/7 3.9s} Bxg2+ {+17.85/1 0.027s}
34. Nxg2 {-M8/5 0.24s} B@f3 {+24.28/1 0.029s} 35. B@h3 {-18.39/8 12s}
P@g4 {+20.13/1 0.023s} 36. Nxd5 {-M8/8 7.6s} gxh3 {+23.43/1 0.038s}
37. Nf4 {-M6/5 0.23s} hxg2+ {+26.58/1 0.039s} 38. Nxg2 {-M8/4 0.10s}
Bxg2+ {+31.69/1 0.032s} 39. Kxg2 {-M6/3 0.024s} N@h4+ {+31.08/1 0.037s}
40. Kh3 {-M4/2 0.001s} Q@g2+ {+31.30/1 0.033s} 41. Kxh4 {-M2/2 0s}
N@f3# {-M1/1 0.42s, Black mates} 0-1

• Sunsetter - CrazyAra

[Date "2018.10.21"]
[White "sunsetter"]
[Black "CrazyAra"]
[Result "1-0"]
[PlyCount "135"]
[TimeControl "40/300"]
[Variant "crazyhouse"]

1. e4 {+0.13/15 7.5s} e5 {+0.26/10 4.4s} 2. Nf3 {+0.14/14 7.4s}
Nc6 {+0.67/13 4.3s} 3. Nc3 {+0.10/14 7.3s} Nf6 {+0.79/13 4.5s}
4. d3 {+0.07/14 7.2s} Be7 {-0.34/11 4.4s} 5. Bg5 {+0.24/14 7.2s}
O-O {-0.50/9 4.5s} 6. Bxf6 {+0.53/14 7.1s} Bxf6 {-0.62/13 12s}
7. Nd5 {+0.52/13 7.0s} d6 {-0.50/11 11s} 8. Nxf6+ {+0.54/13 6.9s}
Qxf6 {+0.03/12 15s} 9. B@g5 {+0.54/13 6.8s} Qg6 {-0.28/11 13s}
10. N@d5 {+0.58/12 6.7s} Bg4 {-0.98/7 9.3s} 11. Bd2 {+0.31/13 13s}
Bxf3 {-4.35/9 9.6s} 12. Qxf3 {+0.21/12 6.5s} N@d4 {-4.80/10 12s}
13. Qd1 {-0.61/12 6.4s} B@h5 {-6.78/10 11s} 14. Qc1 {-0.83/11 6.3s}
N@f3+ {-7.96/11 10s} 15. gxf3 {-0.93/13 6.2s} Nxf3+ {-10.26/12 13s}
16. Kd1 {-0.93/12 6.2s} P@g2 {-12.66/10 10s} 17. N@e7+ {-0.28/13 24s}
Nxe7 {-8.96/22 17s} 18. Nxe7+ {-0.28/13 5.8s} Kh8 {0.00/1 0.058s}
19. Nxg6+ {-0.28/13 5.7s} fxg6 {-8.17/20 14s} 20. Bxg2 {-0.18/12 5.6s}
Nxd2+ {-7.41/18 13s} 21. P@e2 {-0.14/11 5.5s} Bxe2+ {-7.16/13 12s}
22. Kxd2 {-0.14/11 5.5s} Rxf2 {-11.18/6 11s} 23. B@e3 {-0.16/11 22s}
B@g5 {-8.38/7 9.9s} 24. N@f7+ {+0.55/11 5.1s} Rxf7 {-5.32/9 15s}
25. Bxg5 {+0.05/12 5.1s} N@d4 {-5.80/5 12s} 26. N@h4 {+0.63/11 10s}
P@f4 {-6.51/5 11s} 27. B@g1 {-0.22/12 39s} P@e3+ {-9.02/9 11s}
28. Bxe3 {-0.69/12 4.4s} fxe3+ {+10.23/1 0.024s} 29. Bxe3 {-0.69/11 4.4s}
B@f4 {+2.55/1 0.027s} 30. Bxf4 {-1.42/11 17s} exf4 {+5.14/1 0.027s}
31. P@f2 {-0.82/11 8.1s} B@g5 {+6.27/1 0.028s} 32. Q@d5 {+0.69/10 0.69s}
Bxh4 {+3.50/1 0.028s} 33. B@c3 {+0.04/9 0.34s} N@f3+ {+4.65/1 0.023s} 34. Bxf3
Nxf3+ {+7.45/1 0.032s} 35. Kxe2 N@d4+ {+1.03/1 0.028s} 36. Bxd4 {+1.18/10 0.33s}
Nxd4+ {+0.91/1 0.025s} 37. Qxd4 {+0.56/9 0.33s} f3+ {+4.41/1 0.022s}
38. Kd1 {+1.71/10 0.62s} B@e2+ {+2.78/1 0.025s} 39. Kd2 {+1.56/10 0.31s}
B@e5 {+1.89/1 0.023s} 40. Qe3 {+0.67/10 0.60s} Bf4 {+4.04/1 0.028s}
41. Qxf4 {+0.86/12 7.7s} Rxf4 {-1.83/10 15s} 42. B@d4 {+0.86/11 7.6s}
N@e6 {-0.77/9 14s} 43. N@h3 {+1.06/11 15s} Nxd4 {-2.08/8 15s}
44. Nxf4 {+0.98/11 7.3s} B@f7 {-2.48/7 15s} 45. B@e3 {+2.19/12 29s}
Bf6 {-1.51/7 15s} 46. P@e7 {+2.52/11 6.8s} Bxe7 {-1.89/7 14s}
47. Bxd4 {+2.45/11 6.8s} P@e5 {-2.11/10 15s} 48. Nxe2 {+2.62/11 6.7s}
fxe2 {-6.25/7 14s} 49. Be3 {+2.45/11 6.6s} N@d4 {-3.55/6 14s}
50. R@d7 {+3.42/11 6.5s} Nf3+ {-3.55/8 14s} 51. Kxe2 {+3.73/13 6.4s}
Q@g4 {-2.10/14 18s} 52. Rxe7 {+3.75/12 6.4s} Nxh2+ {-0.23/16 18s}
53. Kd2 {+3.02/13 13s} Nf3+ {-1.84/17 24s} 54. Kc3 {+3.25/13 6.1s}
P@d4+ {-2.07/14 24s} 55. Kb4 {+2.02/12 12s} a5+ {-2.45/15 22s}
56. Ka3 {+2.82/12 5.9s} dxe3 {-2.72/11 19s} 57. Rxf7 {+2.27/10 5.8s}
Qe6 {-3.45/10 16s} 58. Rxc7 {+2.48/11 46s} b5 {-6.10/10 15s}
59. c3 {+3.73/11 41s} b4+ {+3.64/1 0.025s} 60. Ka4 {+4.38/10 4.7s}
B@d7+ {-0.50/1 0.034s} 61. P@c6 {+5.59/10 4.6s} Bxc6+ {-2.23/1 0.020s}
62. Rxc6 {+5.65/11 4.6s} P@b5+ {-2.85/1 0.014s} 63. Kxb5 Qd7 {-5.18/1 0.027s}
64. N@b6 {+9.30/10 4.5s} Qb7 {-3.71/1 0.014s} 65. B@c8 {+12.08/10 4.4s}
Qa6+ {-5.49/1 0.014s} 66. Bxa6 {+29.35/10 4.4s} Rxa6 {-10.75/1 0.014s} 67. Q@f8+
B@g8 {-23.96/1 0.022s} 68. N@f7# {White mates} 1-0

• CrazyAra - Sunsetter

[Date "2018.10.22"]
[White "CrazyAra"]
[Black "sunsetter"]
[Result "1-0"]
[PlyCount "85"]
[TimeControl "40/300"]
[Variant "crazyhouse"]

1. e4 {+1.17/9 4.2s} e5 {+0.17/15 7.5s} 2. Nf3 {+1.00/13 4.2s}
Nc6 {+0.13/14 7.4s} 3. Bc4 {+1.06/13 4.5s} Nf6 {+0.12/13 7.3s}
4. Ng5 {+2.92/9 4.1s} d5 {+0.75/13 7.3s} 5. exd5 {+2.04/11 5.3s}
Na5 {+0.83/13 7.2s} 6. Nxf7 {+3.01/12 11s} Kxf7 {-0.17/12 7.1s}
7. P@e6+ {+2.45/9 10s} Ke7 {+0.05/13 7.0s} 8. d3 {+3.20/11 10s}
Nxc4 {-0.60/12 6.9s} 9. dxc4 {+3.81/10 13s} Bxe6 {-0.43/11 6.8s}
10. Bg5 {+3.25/9 11s} N@e4 {-0.72/10 6.7s} 11. Bxf6+ {+2.28/9 11s}
gxf6 {-0.38/11 6.6s} 12. dxe6 {+2.80/8 11s} Qxd1+ {-0.85/10 6.5s}
13. Kxd1 {-0.43/1 0.026s} Rd8+ {-0.86/9 6.5s} 14. B@d5 {+0.44/8 12s}
B@h5+ {+1.04/10 102s} 15. P@f3 {+2.43/10 13s} Nxf2+ {+0.14/11 41s}
16. Ke2 {+1.08/10 14s} Rxd5 {+0.14/10 4.6s} 17. N@e3 {+4.63/7 11s}
Q@e4 {+0.01/11 18s} 18. N@f5+ {+5.05/12 11s} Kd8 {+2.12/11 8.6s}
19. cxd5 {+8.26/10 12s} B@b5+ {+1.95/11 17s} 20. Kxf2 {+6.00/15 17s}
Qxe3+ {+2.38/10 0.76s} 21. Nxe3 {+5.89/18 19s} B@h4+ {+3.88/10 1.4s}
22. g3 {+7.09/19 15s} N@h3+ {+3.21/10 1.3s} 23. Kg2 {+8.76/10 14s}
Nf4+ {+3.24/10 2.4s} 24. gxf4 {+10.25/9 15s} Bxf3+ {+11.70/10 4.0s}
25. Kxf3 {+15.89/7 16s} P@g4+ {+11.13/10 0.70s} 26. Kxg4 {+16.36/8 16s}
h5+ {+8.36/9 0.19s} 27. Kxh4 {+6.08/1 0.020s} P@g5+ {+8.70/10 0.17s}
28. fxg5 {+10.37/1 0.036s} fxg5+ {+9.32/9 0.15s} 29. Kxg5 {+10.31/1 0.017s}
Bh6+ {+9.46/8 0.15s} 30. Kh4 {+6.37/1 0.026s} P@g5+ {+9.74/9 0.15s}
31. Kxh5 {+10.05/1 0.027s} Bf8+ {+11.13/9 0.57s} 32. Kxg5 {+11.67/1 0.021s}
Bh6+ {+11.72/9 0.15s} 33. Kg4 {+10.50/1 0.020s} P@h5+ {+14.47/9 0.53s}
34. Kxh5 {+11.06/1 0.018s} Bxe3+ {+8.59/8 0.24s} 35. Kg4 {+6.05/1 0.023s}
Rg8+ {+7.72/9 0.89s} 36. Kf3 {+4.16/1 0.018s} Rf8+ {+10.74/9 0.21s}
37. P@f7 {+6.14/1 0.015s} N@d4+ {+13.01/9 0.36s} 38. Kxe3 {+10.65/1 0.030s}
Nf5+ {+13.52/9 0.17s} 39. Ke4 {+16.29/1 0.025s} Nd6+ {+14.78/9 0.20s}
40. Kxe5 {+15.66/1 0.025s} Nxf7+ {+17.96/9 0.21s} 41. exf7 {+21.93/6 16s}
Rxf7 {+M6/9 7.2s} 42. N@e6+ {+39.96/3 8.3s} Kc8
43. Q@d8# {+M1/1 0.55s, White mates} 1-0

• Stockfish - CrazyAra

[Date "2018.10.21"]
[White "stockfish-x86_64-modern  2018-10-13"]
[Black "CrazyAra"]
[Result "1-0"]
[PlyCount "53"]
[TimeControl "40/300"]
[Variant "crazyhouse"]

1. e4 {+1.41/24 19s} e6 {+0.26/10 4.5s} 2. d4 {+2.48/20 5.3s} d5 {+0.17/11 4.3s}
3. e5 {+2.64/20 1.9s} Nc6 {+0.06/8 4.1s} 4. Nf3 {+2.75/20 3.8s}
Nge7 {-0.33/8 3.7s} 5. Nc3 {+3.19/21 11s} Nf5 {-1.00/9 4.5s}
6. Bg5 {+3.04/21 6.1s} Be7 {-2.37/8 4.6s} 7. Bxe7 {+3.36/20 4.8s}
Qxe7 {-0.98/11 14s} 8. B@c5 {+3.79/20 13s} Qd8 {-0.43/12 11s}
9. Bd3 {+3.88/20 5.7s} B@g4 {-1.15/11 11s} 10. Bxf5 {+4.06/18 2.7s}
exf5 {+0.19/13 14s} 11. h3 {+5.65/18 3.3s} Bxf3 {+0.83/14 13s}
12. Qxf3 {+5.62/18 4.3s} B@e4 {+0.06/8 13s} 13. Qg3 {+8.92/18 2.3s}
N@h5 {+3.90/9 14s} 14. Qxg7 {+9.22/19 8.9s} Nxg7 {+5.17/11 19s}
15. B@f6 {+9.93/17 3.3s} Qxf6 {+3.40/7 13s} 16. exf6 {+11.50/18 3.5s}
B@h4 {+0.56/13 13s} 17. fxg7 {+18.52/18 2.5s} Bxf2+ {+1.86/14 12s}
18. Kxf2 {+21.96/18 3.7s} P@g3+ {+3.75/9 11s} 19. Kxg3 {+25.85/18 14s}
f4+ {+4.51/10 11s} 20. Kxf4 {+26.08/18 13s} Q@h6+ {+4.24/9 12s}
21. P@g5 {+25.88/18 14s} Qxg7 {+6.74/8 12s} 22. N@f6+ {+26.64/16 7.3s}
Qxf6+ {+8.54/11 16s} 23. gxf6 {+27.88/16 1.7s} N@f5 {+3.68/7 11s}
24. P@g7 {+M15/20 7.1s} Rg8 {+9.49/6 11s} 25. Q@f8+ {+M5/51 2.0s}
Rxf8 {+38.67/4 7.5s} 26. gxf8=Q+ {+M3/109 4.4s} Kd7 {+M1/1 0.053s}
27. Q@e8# {+M1/127 0.026s, White mates} 1-0

Raw Network

• In this experiment no mcts-search was used but the legal move with the highest softmax activation using a single network prediction:

[Date "2018.10.21"]
[White "CrazyAra"]
[Black "crazywa"]
[Result "0-1"]
[PlyCount "74"]
[TimeControl "40/120"]
[Variant "crazyhouse"]

1. e4 {+0.71/1 0.25s} d5 {-0.48/10 2.0s} 2. exd5 {+0.83/1 0.022s}
Qxd5 {-0.44/10 3.5s} 3. Nc3 {+0.76/1 0.023s} Qe5+ {-0.62/8 1.7s}
4. Be2 {+0.20/1 0.026s} Qg5 {-0.62/9 4.8s} 5. Bf3 {+1.95/1 0.031s}
Qa5 {-0.75/7 1.8s} 6. Nge2 {+2.04/1 0.019s} Nf6 {-0.60/9 3.3s}
7. O-O {+1.61/1 0.023s} e6 {-0.42/9 2.7s} 8. d4 {+2.07/1 0.025s}
Bb4 {-0.56/9 3.1s} 9. a3 {+2.99/1 0.020s} Be7 {-0.58/9 6.6s}
10. b4 {+4.19/1 0.021s} Bxb4 {+1.47/10 2.1s} 11. axb4 {+5.41/1 0.015s}
Qxa1 {+2.09/9 2.5s} 12. B@b2 {+3.44/1 0.015s} Qa6 {+3.13/9 2.1s}
13. b5 {+4.13/1 0.018s} Qa5 {+3.29/9 2.3s} 14. Bg5 {+3.87/1 0.025s}
R@f5 {+3.36/8 2.3s} 15. Bxf6 {+2.85/1 0.025s} Rxf6 {+1.60/9 3.3s}
16. N@h5 {+6.92/1 0.029s} Rg6 {+2.08/9 2.3s} 17. Nef4 {+3.02/1 0.028s}
Rg5 {+1.36/8 4.7s} 18. Ne4 {+5.57/1 0.017s} Qxb5 {+1.37/8 3.1s}
19. Nxg5 {+5.57/1 0.013s} Qxg5 {+1.09/8 5.9s} 20. R@g3 {+6.20/1 0.020s}
Qh4 {+0.46/7 1.8s} 21. Nxg7+ {+12.76/1 0.019s} Kd8 {-1.98/8 1.6s}
22. d5 {+9.77/1 0.025s} e5 {-3.07/7 2.9s} 23. Bxe5 {+14.86/1 0.024s}
P@d6 {-7.20/8 12s} 24. P@e7+ {+13.77/1 0.022s} Qxe7 {-5.33/9 4.3s}
25. P@f6 {+11.43/1 0.015s} Qxe5 {-7.77/9 2.7s} 26. P@e7+ {+5.30/1 0.018s}
Kd7 {-7.78/8 1.3s} 27. Bg4+ {+7.29/1 0.028s} P@f5 {-8.49/8 7.1s}
28. Bxf5+ {+9.59/1 0.027s} P@e6 {-8.44/7 1.7s} 29. dxe6+ {+12.27/1 0.030s}
Kc6 {-13.61/7 4.9s} 30. Qd5+ {+10.27/1 0.024s} Qxd5 {-4.52/7 0.92s}
31. Nxd5 {+11.44/1 0.024s} N@e2+ {-6.50/7 3.7s} 32. Kh1 {+4.73/1 0.020s}
Q@b5 {-6.51/6 2.2s} 33. P@d7 {+5.73/1 0.019s} Nxg3+ {+M15/6 0.80s}
34. hxg3 {+6.06/1 0.016s} Qxf1+ {+M13/6 1.1s} 35. N@g1 {-2.74/1 0.019s}
Qxg1+ {+M11/6 1.9s} 36. Kxg1 {-2.86/1 0.024s} R@d1+ {+M9/6 0.81s}
37. Kh2 {-4.96/1 0.018s} R@h1# {+M1/3 0.007s, Black mates} 0-1

---

[Date "2018.10.21"]
[White "CrazyAra"]
[Black "sjeng"]
[Result "1-0"]
[PlyCount "61"]
[TimeControl "40/120"]
[Variant "crazyhouse"]

1. e4 {+0.71/1 0.27s} g6 {+0.17/8 1.9s} 2. d4 {+0.32/1 0.027s} e6 {+1.18/7 2.0s}
3. Nc3 {+1.43/1 0.029s} Bb4 {+0.55/7 2.0s} 4. Nf3 {+3.18/1 0.030s}
h6 {+1.37/7 2.0s} 5. Bd3 {+2.64/1 0.026s} Rh7 {+1.34/7 1.7s}
6. O-O {+4.26/1 0.031s} Rh8 {+1.98/8 2.2s} 7. e5 {+5.21/1 0.030s}
Nc6 {+2.10/8 2.1s} 8. Ne4 {+5.98/1 0.030s} Be7 {+1.71/8 1.5s}
9. c3 {+5.97/1 0.028s} a5 {+1.35/8 2.3s} 10. Re1 {+7.06/1 0.026s}
g5 {+1.55/8 2.1s} 11. c4 {+7.91/1 0.031s} Na7 {+1.21/7 2.0s}
12. d5 {+9.39/1 0.022s} g4 {+2.98/8 3.3s} 13. Nd4 {+8.68/1 0.015s}
exd5 {+3.03/7 2.2s} 14. cxd5 {+11.60/1 0.026s} d6 {+4.84/7 2.3s}
15. P@g7 {+12.18/1 0.020s} Rh7 {+8.58/7 1.8s} 16. Nf6+ {+12.36/1 0.022s}
Nxf6 {+10.66/7 3.3s} 17. exf6 {+13.54/1 0.030s} Rxg7 {+12.64/7 4.9s}
18. fxg7 {+13.38/1 0.019s} P@e5 {+20.51/6 4.1s} 19. g8=Q+ {+17.48/1 0.022s}
Bf8 {+15.27/6 4.0s} 20. N@g7+ {+18.85/1 0.015s} Ke7 {+16.99/5 2.0s}
21. Ndf5+ {+16.44/1 0.013s} Bxf5 {+19.37/7 4.0s} 22. Nxf5+ {+16.60/1 0.022s}
Ke8 {+9995.00/6 4.0s} 23. B@e6 {+21.63/1 0.028s} N@h8 {+21.42/5 4.0s}
24. Qxh8 {+25.98/1 0.028s} N@h3+ {+20.45/5 2.9s} 25. gxh3 {+18.01/1 0.020s}
fxe6 {+28.04/6 5.0s} 26. dxe6 {+21.30/1 0.024s} Qd7 {+M7/5 1.8s}
27. exd7+ {+27.24/1 0.029s} Kxd7 {+M7/4 2.2s} 28. N@f6+ {+24.61/1 0.025s}
Kc6 {+M5/4 2.1s} 29. Q@d7+ {+25.24/1 0.028s} Kc5 {+M5/4 2.0s}
30. R@b5+ {+26.27/1 0.024s} Nxb5 31. Qxb5# {+24.56/1 0.032s, White mates} 1-0

Longer Time Controls

The following 2 matches have been conducted using a time-control of 90min/40 moves:

Hyperparameter Settings for MCTS:

• threads - 8
• cpuct - 1
• playouts_empty_pockets - 2048
• playouts_filled_pockets - 4096
• playouts_update_stats - 256
• max_search_depth - 40
• max_search_time_s - 130
• dirichlet_alpha - 0.2
• dirichlet_epsilon - 0.25
• threshold_time_for_raw_net_ms - 30,000

CrazyAra 0.2 vs Stockfish 2018-10-13 - Result: Black mates

[Date "2018.10.21"]
[White "CrazyAra"]
[Black "stockfish-x86_64-modern  2018-10-13"]
[Result "0-1"]
[PlyCount "56"]
[TimeControl "40/5400"]
[Variant "crazyhouse"]

1. e4 {+1.03/15 33s} d5 {-1.84/30 372s} 2. exd5 {+1.68/17 50s}
Nf6 {-1.56/23 26s} 3. Bb5+ {+1.96/19 106s} c6 {-2.26/30 726s}
4. dxc6 {+2.41/17 120s} bxc6 {-2.28/26 155s} 5. Bc4 {+2.57/18 118s}
e5 {-2.54/27 120s} 6. Qe2 {+2.81/22 140s} Bd6 {-3.78/29 646s}
7. d4 {+4.44/15 111s} P@h3 {-3.08/23 86s} 8. Nxh3 {+4.07/17 115s}
Bxh3 {-7.93/25 436s} 9. gxh3 {+5.12/13 119s} Nbd7 {-8.38/24 236s}
10. P@g2 {+5.89/9 91s} O-O {-5.68/21 35s} 11. P@h6 {+5.54/13 99s}
gxh6 {-5.94/23 178s} 12. Bxh6 {+4.97/12 104s} P@d5 {-5.93/21 65s}
13. Bd3 {+5.29/11 96s} e4 {-4.45/23 87s} 14. P@e5 {+5.06/11 101s}
Re8 {-4.15/20 19s} 15. B@f4 {+3.88/13 112s} exd3 {-0.86/24 68s}
16. cxd3 {+0.15/18 139s} Nxe5 {-0.77/24 43s} 17. dxe5 {-0.74/17 131s}
N@d4 {+2.08/22 40s} 18. N@b7 {-0.04/15 121s} Bb4+ {+2.20/22 30s}
19. Nc3 {-1.03/17 132s} Qc8 {+6.68/21 88s} 20. Bg7 {-1.52/15 121s}
Nxe2 {+11.24/19 26s} 21. Bxf6 {-4.57/18 138s} P@g7 {+13.12/19 32s}
22. Kxe2 {-4.73/10 105s} Bxc3 {+15.72/19 52s} 23. Bxg7 {-1.66/15 115s}
B@f3+ {+M13/32 31s} 24. Kxf3 {-4.01/33 139s} N@d4+ {+M11/42 41s}
25. Kg3 {-5.44/27 133s} Qxh3+ {+M9/46 39s} 26. Kxh3 {-16.24/12 74s}
Q@h5+ {+M5/52 53s} 27. P@h4 {-23.56/10 35s} P@g4+ {+M3/55 161s}
28. Kg3 {0.00/1 0.044s} Ne2# {+M1/127 0.010s, Black mates} 0-1

Sunsetter 8 vs CrazyAra 0.2 - Result: White loses on time

Hyperparameter Settings for MCTS - Same as above but with:

• dirichlet_epsilon - 0.1

[Date "2018.10.21"]
[White "sunsetter"]
[Black "CrazyAra"]
[Result "0-1"]
[PlyCount "74"]
[Termination "time forfeit"]
[TimeControl "40/5400"]
[Variant "crazyhouse"]

1. e4 {+0.15/16 135s} Nc6 {+0.76/23 41s} 2. d4 {+0.29/16 133s} d5 {+0.80/20 46s}
3. e5 {+0.24/15 132s} Nh6 {-1.12/16 46s} 4. Bxh6 {+0.41/16 130s}
gxh6 {-0.65/15 122s} 5. N@f4 {+0.36/14 128s} Bg7 {-1.06/27 98s}
6. Bb5 {+0.68/15 127s} a6 {-2.77/14 96s} 7. Bxc6+ {+1.03/14 125s}
bxc6 {-1.94/17 133s} 8. Nge2 {+1.00/14 124s} Rg8 {-1.87/16 100s}
9. Nbc3 {+1.00/13 122s} B@g4 {-1.96/12 91s} 10. N@e3 {+1.16/15 121s}
Bxe2 {-1.08/15 104s} 11. Qxe2 {+1.28/14 119s} B@g5 {+1.01/15 110s}
12. B@a4 {+1.10/14 118s} N@b5 {-0.68/18 138s} 13. Bxb5 {+1.16/15 116s}
axb5 {-0.80/19 137s} 14. Nfxd5 {+1.16/13 115s} cxd5 {-1.82/17 135s}
15. Qxb5+ {+1.05/12 113s} Bd7 {-2.35/22 138s} 16. P@c6 {+0.98/13 112s}
Bxc6 {-3.25/19 143s} 17. Qxc6+ {+1.86/12 110s} P@d7 {-2.68/22 138s}
18. Qxd5 {+1.80/13 218s} B@c6 {-2.46/28 146s} 19. Qc4 {+1.51/13 213s}
Bxe3 {-2.27/20 133s} 20. B@h5 {+1.29/12 104s} Bxf2+ {-6.14/18 140s}
21. Kxf2 {+1.33/12 205s} P@g6 {-6.22/16 136s} 22. Bg4 {+0.84/12 100s}
N@d2 {-6.03/20 138s} 23. Qe2 {+1.46/13 197s} N@e4+ {-5.89/18 139s}
24. Ke1 {+1.41/14 96s} Nxc3 {-5.60/22 133s} 25. bxc3 {+0.61/13 95s}
N@f4 {-6.25/18 141s} 26. Qxd2 {+1.67/13 94s} Nxg2+ {-6.41/22 139s}
27. Kd1 {+1.97/13 93s} P@b2 {-6.67/22 133s} 28. Rb1 {+1.18/13 91s}
Rxa2 {-6.70/22 134s} 29. P@e6 {-0.06/13 722s} dxe6 {-7.83/26 138s}
30. B@f3 {-0.24/12 81s} P@e4 {-8.60/31 133s} 31. Qxg2 {-0.96/13 321s}
Ra1 {-8.96/16 141s} 32. Ke2 {-1.41/13 152s} Rxb1 {-8.05/18 136s}
33. Rxb1 {-1.66/12 149s} exf3+ {-8.04/17 142s} 34. Bxf3 {-0.73/11 72s}
B@d5 {-7.52/16 138s} 35. Bxd5 {-0.24/13 143s} Bxd5 {-5.43/21 143s}
36. B@b5+ {+0.19/11 70s} P@d7 {-5.52/21 141s} 37. P@e4 {-0.23/12 69s}
B@c6 {-4.50/22 130s, White loses on time} 0-1