Help! My engine is insane!

[ZirconiumX]

You could describe my engine as 'wild' and 'sacrificial'.

I, however, do not. I describe it as 'insane'. It does not 'play for equality', nor tries to win. It just entertains you.

Welcome to the wonderful world of Fruit 2.1MB, an engine so selective, it just prunes all of the safe and sensible moves.

[d]r2q2k1/1pp2p1p/p2n2pQ/2pb4/3N1B2/1PP4P/P1P2PP1/4R1K1 w - - 1 21

Here is the sane choice, as chosen by DiscoCheck 3.6.1 "Boney M" : Ne2
Here is the mental hospital choice, as chosen by Fruit 2.1MB : Bxd6

[d]4r3/2p2pkp/ppb3p1/2p1q3/2P5/1P3P1P/P1PQN1P1/4R1K1 w - - 0 27

Having sucessfully weakened its own king shelter, just to limit the mobility of the Bishop by one move, it continues to be insane.

Here is the sane choice, as chosen by DiscoCheck 3.6.1 "Boney M" : Kf1
Here is the mental hospital choice, as chosen by Fruit 2.1MB : Kf1

Wait, they agree?!

Here is the PGN, for your entertainment.

[Event "?"]
[Site "?"]
[Date "2012.07.15"]
[Round "?"]
[White "Fruit 2.1MB"]
[Black "Fruit 2.1"]
[Result "1/2-1/2"]
[ECO "C77"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Bxc6 dxc6 6. O-O Bg4 7. h3 Be6 8.
Nc3 Bc5 9. Nxe5 Bd4 10. Nf3 Bxc3 11. dxc3 Nxe4 12. Qe2 Nd6 13. Bg5 Qb8 14. Rfe1
O-O 15. Nd4 Re8 16. Qh5 Qc8 17. Bf4 Bd5 18. b3 g6 19. Qh6 Qd8 20. Rad1 Rxe1+
21. Rxe1 c5 22. Bxd6 Qxd6 23. Ne2 Re8 24. Qc1 Qe5 25. c4 Bc6 26. Qd2 Kg7 27. f3
b6 28. Kf1 Qf6 29. Qf4 Qd8 30. Nc3 Rxe1+ 31. Kxe1 Qd6 32. Qxd6 cxd6 33. Kd2 Kf6
34. Ke3 Ke5 35. Ne4 Bxe4 36. f4+ Ke6 37. Kxe4 f5+ 38. Kd3 Ke7 39. Ke3 Kd7 40.
Ke2 h6 41. Kd3 Ke7 42. g3 Kf6 43. Ke3 Kf7 44. Kd3 Ke7 45. Ke2 Ke6 46. Kd3 Kf7
47. Ke3 Kf6 48. Kd3 Ke6 49. Ke3 Kd7 50. Kd3 Kc7 51. Ke3 Kd8 52. Kd3 Kd7 53. Ke3
Kc6 54. Kd3 d5 55. cxd5+ Kxd5 56. c4+ Kd6 57. Ke3 Ke6 58. Kd3 Kd6 59. Ke3 Ke6
60. Kd3 Kd6 1/2-1/2

Yup. They drew.

I feel faint.

Matthew:out

[geots]

You could describe my engine as 'wild' and 'sacrificial'.

I, however, do not. I describe it as 'insane'. It does not 'play for equality', nor tries to win. It just entertains you.

Welcome to the wonderful world of Fruit 2.1MB, an engine so selective, it just prunes all of the safe and sensible moves.

[d]r2q2k1/1pp2p1p/p2n2pQ/2pb4/3N1B2/1PP4P/P1P2PP1/4R1K1 w - - 1 21

Here is the sane choice, as chosen by DiscoCheck 3.6.1 "Boney M" : Ne2
Here is the mental hospital choice, as chosen by Fruit 2.1MB : Bxd6

[d]4r3/2p2pkp/ppb3p1/2p1q3/2P5/1P3P1P/P1PQN1P1/4R1K1 w - - 0 27

Having sucessfully weakened its own king shelter, just to limit the mobility of the Bishop by one move, it continues to be insane.

Here is the sane choice, as chosen by DiscoCheck 3.6.1 "Boney M" : Kf1
Here is the mental hospital choice, as chosen by Fruit 2.1MB : Kf1

Wait, they agree?!

Here is the PGN, for your entertainment.

[Event "?"]
[Site "?"]
[Date "2012.07.15"]
[Round "?"]
[White "Fruit 2.1MB"]
[Black "Fruit 2.1"]
[Result "1/2-1/2"]
[ECO "C77"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. Bxc6 dxc6 6. O-O Bg4 7. h3 Be6 8.
Nc3 Bc5 9. Nxe5 Bd4 10. Nf3 Bxc3 11. dxc3 Nxe4 12. Qe2 Nd6 13. Bg5 Qb8 14. Rfe1
O-O 15. Nd4 Re8 16. Qh5 Qc8 17. Bf4 Bd5 18. b3 g6 19. Qh6 Qd8 20. Rad1 Rxe1+
21. Rxe1 c5 22. Bxd6 Qxd6 23. Ne2 Re8 24. Qc1 Qe5 25. c4 Bc6 26. Qd2 Kg7 27. f3
b6 28. Kf1 Qf6 29. Qf4 Qd8 30. Nc3 Rxe1+ 31. Kxe1 Qd6 32. Qxd6 cxd6 33. Kd2 Kf6
34. Ke3 Ke5 35. Ne4 Bxe4 36. f4+ Ke6 37. Kxe4 f5+ 38. Kd3 Ke7 39. Ke3 Kd7 40.
Ke2 h6 41. Kd3 Ke7 42. g3 Kf6 43. Ke3 Kf7 44. Kd3 Ke7 45. Ke2 Ke6 46. Kd3 Kf7
47. Ke3 Kf6 48. Kd3 Ke6 49. Ke3 Kd7 50. Kd3 Kc7 51. Ke3 Kd8 52. Kd3 Kd7 53. Ke3
Kc6 54. Kd3 d5 55. cxd5+ Kxd5 56. c4+ Kd6 57. Ke3 Ke6 58. Kd3 Kd6 59. Ke3 Ke6
60. Kd3 Kd6 1/2-1/2

Yup. They drew.

I feel faint.

Matthew:out

Finally, with a bit of luck- an engine I might be able to get at least one draw from.


gts

[ZirconiumX]

I can send you the source code for it if you want it?

(You'll have to compile it yourself, I don't have a windows computer, but am trying to get someone to 'lend me time' on it (*hint hint Gab*).

Matthew:out

[gleperlier]

Hi Matt,

In the first position Bxd6 is not that bad, it is the second choise of Komodo 4 that gives it a -0.05.

[d]r2q2k1/1pp2p1p/p2n2pQ/2pb4/3N1B2/1PP4P/P1P2PP1/4R1K1 w - - 0 1

Analysis by Komodo64 SSE Version 4:

1. = (0.13): 21.Ce2 Fc6 22.Cg3 f6 23.Fd2 Dd7 24.Df4 Rg7 25.c4 Te8 26.Txe8 Dxe8 27.Fc3 De7 28.Dg5 De1+ 29.Fxe1 fxg5 30.f3 Rf6 31.Rf2 b6 32.Cf1 Cf5 33.Ce3 Re6 34.Fc3 Cd4

2. = (-0.05): 21.Fxd6 Dxd6 22.Cf3 Fxf3 23.gxf3 Df6 24.Te3 a5 25.a4 Df5 26.Te4 Dxf3 27.Th4 Dd1+ 28.Rh2 Dd6+ 29.Rg1 Dd1+

3. = (-0.22): 21.Fe5 f6 22.Fxd6 Dxd6 23.Cf3 Fc6 24.Ch2 Te8 25.Txe8+ Fxe8 26.Cg4 Fd7 27.Dh4 Rg7 28.Dh6+ Rh8 29.c4 b6 30.Dh4 Rg7 31.Dh6+ Rg8 32.Dh4 g5 33.Dh5 Dd1+ 34.Rh2 Dd4 35.Ce3 De5+ 36.Rg1 Da1+ 37.Rh2 Dxa2 38.Dd1

(Gab, 15.07.2012)

For second position Kf1 is not that bad. First choice of Komodo 4 and very very closed to the others possibilities.

[d]4r3/2p2pkp/ppb3p1/2p1q3/2P5/1P3P1P/P1PQN1P1/4R1K1 w - - 0 1

Analysis by Komodo64 SSE Version 4:

1. = (-0.25): 2.Rf1 Df6 3.Df4 De7 4.Dd2 h6 5.Cf4 Dxe1+ 6.Dxe1 Txe1+ 7.Rxe1 g5 8.Cd3 Rf6 9.Rf2 a5 10.Re3 Re6 11.g3 f5 12.f4 Rf6 13.Ce5 Fe4 14.c3 Fb1
2. = (-0.26): 2.Rf2 h6 3.Cf4 Dxe1+ 4.Dxe1 Txe1 5.Rxe1 g5 6.Cd3 Rf6 7.Rf2 Re6 8.g3 f6 9.Re3 Fe8 10.a3 a5 11.a4 f5 12.Cf2 Fc6 13.Cd3 Fd7 14.Cf2 Fe8 15.Cd3
3. = (-0.28): 2.a4 h5 3.Rf2 h4 4.Td1 f6 5.Rf1 a5 6.Cc3 g5 7.Cd5 Dg3 8.Rg1 Dd6 9.Rf2 Fxd5 10.Dxd5 Df4 11.Dd2 De5 12.Rf1 Te6 13.Dd8 Te7 14.Rg1

(Gab, 15.07.2012)