Test position from Tinker-ZCT

[Zach Wegner]

[d]5rk1/2b3pp/2p2nr1/1p1q4/3P1pP1/2P2P2/1P1BQ2P/R2R2KN b - - 0 1
Rxg4! wins. Takes a couple minutes for Glaurung to find it here.

[Event "ICS Unrated Standard match"]
[Site "chessclub.com"]
[Date "2009.03.22"]
[Round "-"]
[White "Tinker"]
[Black "zct"]
[Result "0-1"]
[WhiteElo "2433"]
[BlackElo "2237"]
[TimeControl "3000+3"]

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8.
c3 d5 9. exd5 Nxd5 10. Nxe5 Nxe5 11. Rxe5 c6 12. d4 Bd6 13. Re1 Qh4 14. g3
Qh3 15. Be3 Bg4 16. Qd3 Rae8 17. Nd2 Re6 18. a4 Qh5 19. axb5 axb5 20. Nf1
Qh3 21. Bd2 Rf6 22. Bd1 Bxd1 23. Rexd1 Rg6 24. Qe4 f5 25. Qg2 Qh5 26. f3
Bf4 27. Qf2 Bc7 28. Qe2 f4 29. g4 Nf6 30. Ng3 Qd5 31. Nh1 Rxg4+ 32. fxg4 f3
33. Qe7 Nxg4 34. Bf4 Bxf4 35. Nf2 Qh5 36. h3 Nxf2 37. Qe6+ Kh8 38. Kxf2
Qh4+ 39. Kf1 h5 40. Ra2 Qg5 41. b4 Be3
{Tinker resigns} 0-1

[jdart]

Arasan (latest build) plays Rxg4 right away (ply 10).

Here is another one from the Diep-Rybka game (after the sacs but this is actually harder I think, because you can find the sac moves w/o seeing that they are really winning):

[d] 8/5ppk/6rp/3p4/1pp5/7q/PP5Q/1R3R1K b - -

bm is Qd3, which is much better than alternatives.

[Howard E]

FEN: 5rk1/2b3pp/2p2nr1/1p1q4/3P1pP1/2P2P2/1P1BQ2P/R2R2KN b - - 0 1

i7-920
512 hash

Ares is less tactical than prodeo default so I'm sure prodeo will play Rxg4 quickly.

ProDeo Ares:
12 00:03 8.485.160 2.828.386 +0.14 Re8 Qg2 h5 h3 hxg4 hxg4 Qb3 Nf2 Nd5 Nd3 Ne3 Bxe3 fxe3
12 00:07 16.664.463 2.224.894 +0.14 Rxg4+
12 00:18 42.250.542 2.347.252 +0.14 Rxg4+
12 00:31 76.571.733 2.470.055 +2.26 Rxg4+ Kf2 Qh5 Qe6+ Kh8 fxg4 Qxh2+ Kf3 Qh3+ Ke2 Re8 Qxe8+ Nxe8 Nf2 Qg2 Rf1
13 00:50 122.599.219 2.451.984 +2.14 Rxg4+ fxg4 f3 Qe7 Nxg4 Bf4 Bxf4 Nf2 Bxh2+ Kf1 Bd6 Qe4 Qxe4 Nxe4 Ne3+ Kf2 Nxd1+ Rxd1
14 01:21 199.371.979 2.461.382 +2.98 Rxg4+ fxg4 f3 Qe7 Nxg4 Bf4 Bxf4 Nf2 Bxh2+ Kf1 Bd6 Qe4 Nh2+ Ke1 Qxe4+ Nxe4 Re8 Kf2 Rxe4
15 01:46 266.614.990 2.515.235 +2.98 Rxg4+ fxg4 f3 Qe7 Nxg4 Bf4 Bxf4 Nf2 Bxh2+ Kf1 Bd6 Qe4 Nh2+ Ke1 Qxe4+ Nxe4 Re8 Kf2 Rxe4
16 05:18 814.449.124 2.561.160 +3.10 Rxg4+ fxg4 f3 Qe7 Nxg4 Bf4 Bxf4 Nf2 Be3 Rf1 Bxf2+ Rxf2 Nxf2 Kxf2 Qb3 Rg1 Qxb2+
17 09:29 1.484.991.631 2.609.827 +3.10 Rxg4+ fxg4 f3 Qe7 Nxg4 Bf4 Bxf4 Nf2 Be3 Rf1 Bxf2+ Rxf2 Nxf2 Kxf2 Qb3 Rg1 Qxb2+