Favor Chess AI vs Chess Evolved Online AI - Gameplay Round 2


Ai Showmatch 2

The second round is ready! This time, the games were played in a best-of-three and a slightly different army was used. In order to see all the rules for the first round you can view the first game's steemit post (all of which except the army used carry over) Game 1 Post

This time the army features a queen instead of a bishop, so it's a little more power on the board to work with for both sides. It did actually result in more dramatic games.


In this video I show both of the game windows, which is good because sometimes the game can end in CEO before it does in FC. The previous video only showed the Favor Chess viewpoint. For the exercise, I have one window open with each of the games and use the moves the AI plays in one game against the AI in the other game. I've also edited the video a little to make watching better and keep track of the score between rounds.

Version .54 of Chess Evolved Online improved the AI in the game in some ways, and it makes a few stronger moves. There were no dramatic changes since .53b, aside from understanding more attack and piece types that aren't part of this showmatch.


If the game ends in either game, it counts as a win for the player who won on that game.
If the game ends in a draw in either game, it counts as a draw.
Domain will be turned off in Favor Chess.
No game clock.
The game will use a slightly modified chess setup that replaces the queenside bishop with another queen.


Video of Match

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Transcribed to PGN format

Game 1

[Variant "From Position"]
[FEN "rnqqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNQQKBNR w KQkq - 0 1"]

1. Nc3 d6 2. f3 f5 3. Kf2 Nf6 4. Ke3 Qe6+
5. Kd4 Nc6+ 6. Kd3 Nb4+ 7. Kd4 c5#

Game 2

[Variant "From Position"]
[FEN "rnqqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNQQKBNR w KQkq - 0 1"]

1. Nc3 d6 2. f3 f5 3. d4 Nc6 4. Qe3 e6
5. g3 g5 6. f4 g4 7. Kf2 a6 8. Bg2 Nh6
9. Qdd2 Be7 10. Bxc6+ bxc6 11. b4 Rb8 12. Na4 d5
13. Nc5 Rb6 14. Qxe6 Qxe6 15. Nxe6 Qd6 16. Qe3 Rxb4
17. Qe5 Rg8 18. Qxd6 cxd6 19. a3 Rc4 20. Rc1 Rg6
21. Nc7+ Kd8 22. Nxa6 Rxd4 23. Nb4 c5 24. Nc6+ Kd7
25. Nxd4 cxd4 26. c4 dxc4 27. Rxc4 Bf6 28. h4 d5
29. Rc1 Ke7 30. Rc7+ Kd8 31. Rxh7 Ng8 32. h5 Rg7
33. Rxg7 Bxg7 34. h6 Bf6 35. h7 Ne7 36. h8=B Bxh8
37. Rxh8+ Kd7 38. a4 Ng6 39. Rh7+ Kc6 40. e3 d3
41. Rh6 Kc5 42. Rxg6 1-0

Game 3

[Variant "From Position"]
[FEN "rnqqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNQQKBNR w KQkq - 0 1"]

1. Nc3 e6 2. Nf3 Nc6 3. d4 Bb4 4. Qe3 Qf6
5. Kd2 Nxd4 6. Nxd4 e5 7. Nf3 a5 8. Qxe5+ Kd8
9. Qxf6+ gxf6 10. e4 Ne7 11. Bc4 d5 12. Bxd5 Nxd5
13. exd5 Qf5 14. Re1 Qf4+ 15. Kd3 Ra6 16. g3 Qf5+
17. Kd4 c5+ 18. Kc4 Qg4+ 19. Re4 Qg6 20. Nh4 Qg5
21. Qg4 h5 22. Qxg5 fxg5 23. Nf5 Rf6 24. g4 b6
25. Rd1 h4 26. f4 gxf4 27. Rxf4 Kd7 28. g5 Rg6
29. Nxh4 Rxg5 30. Nf3 Rg7 31. Rh4 Re8 32. Rg1 Rgg8
33. Rhg4 Rxg4+ 34. Rxg4 f5 35. Rg7+ Kd8 36. h4 Re3
37. Nd2 Bxc3 38. bxc3 Ke8 39. Rg8+ Ke7 40. h5 Kd6
41. Rg6+ Kc7 42. d6+ Kb8 43. d7 Kc7 44. Rg7 Kc6
45. d8=B a4 46. Rg6+ Kb7 47. Rxb6+ Kc8 48. Bg5 Re5
49. Rc6+ Kb7 50. Rxc5 Rxc5+ 51. Kxc5 1-0

Well according to stockfish, in game 2 the two biggest blunders were 23. black pushing c5 pawn and 38. black knight to g6 (both of which FC was able to capitalize on)

Interestingly black was winning for the first 22 moves or so but it was by a pretty small amount. After that white was winning for the rest of the game.

FC's knight was trapped the whole game on g1 and the biggest blunder I found was 7. King f2 (which would have dropped the d4 pawn if black bishop g7 or close to it, and could have caused a pinned queen.). It was a pretty clean game honestly, blunders-wise.

Nice domain attempts by the Favour Chess AI, very bold. The King is a fighting piece after all anyways so there is no need to tweak the AI to not push the king when domain victory is disabled.


It would have very likely pushed domain to their promotion row in the two long games if it was still trying to do that.

ceo first game: king go brrrr...

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