Test position

[Tord Romstad]

I wish I could present a nice combination by Glaurung 2, but although my new engine wins more games than it loses against its older brother, it always wins in ugly and boring ways. The position given below, therefore, is from one of the games were Glaurung 1.2.1 won against the new Glaurung:
[d]rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - - 12 27
Glaurung 1.2.1 sacrificed all three (!) minor pieces with 27. Bxh6! gxh6 28. Nxh6+ Kg7 29. Nxf7! Kxf7 30. Qg6+ Ke7 31. Nxd5+!

How long does your favorite engine take to play 27. Bxh6? Glaurung 1.2.1 with a single thread on my Core Duo plays the move after 8 seconds. Glaurung 2-epsilon/2 still does not find it after one minute.

The game:

Code: Select all

[Round "2"]
[White "Glaurung 1.2.1"]
[Black "Glaurung 2-epsilon/2"]
[Result "1-0"]
[TimeControl "240+1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. O-O Be7 7. h3 Bh5 8.
c4 Nb6 9. Nc3 O-O 10. Re1 Bg6 11. a4 d5 12. c5 N6d7 13. a5 a6 14. Bd3 Bxd3
15. Qxd3 Nc6 16. b4 Re8 17. Bd2 Nf8 18. Reb1 Ra7 19. h4 Nd7 20. h5 h6 21.
Bf4 Rf8 22. Bd2 Qb8 23. Ra4 Re8 24. Ra2 Rd8 25. Nh2 Ra8 26. Ng4 Bh4 27.
Bxh6 gxh6 28. Nxh6+ Kg7 29. Nxf7 Kxf7 30. Qg6+ Ke7 31. Nxd5+ exd5 32. Qg7+
Ke6 33. Qg4+ Ke7 34. Qxh4+ Ke6 35. Qg4+ Ke7 36. Qg7+ Ke6 37. Qg6+ Ke7 38.
e6 Nde5 39. Qg7+ Kxe6 40. dxe5 Rf8 41. Qh6+ Ke7 42. e6 Qd8 43. Re1 Rg8 44.
Qh7+ Kf6 45. Qf7+ Kg5 46. e7 Qd7
{Black resigns} 1-0

Tord

[Alessandro Scotti]

I was quite surprised to see Hamsters 0.3 pick up this move immediately and hold it. After a while, I realized I was asleep though. When I woke up, Hamsters was playing g3...

[Dann Corbit]

Are you sure you didn't implant Paul Morphy's DNA in that thing!?

[Terry McCracken]

Are you sure you didn't implant Paul Morphy's DNA in that thing!?

Actually it looks more like "Petrosian DNA" as he played closed and semi-closed positions

[PauloSoare]

I was quite surprised to see Hamsters 0.3 pick up this move immediately and hold it. After a while, I realized I was asleep though. When I woke up, Hamsters was playing g3...

Alessandro, look

New game
rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - - 0 1

Analysis by HIARCS 11.1 MP UCI:

1.b5 axb5 2.Nxb5 Ne7 3.g3 Bg5 4.f4 f5 5.fxg5
+- (1.46) Depth: 8/21 00:00:00 222kN
1.b5
± (1.21) Depth: 8/21 00:00:00 243kN
1.b5 axb5 2.Nxb5 Qc8 3.Rba1 Ne7 4.g3
± (1.21) Depth: 8/21 00:00:00 250kN
1.Ne2
± (1.21) Depth: 8/21 00:00:00 259kN
1.Ne2 Qa7 2.Rab2 Kf8 3.Qh7 Ke7 4.g3
+- (1.50) Depth: 8/21 00:00:00 318kN
1.Ne2 Qa7 2.b5 axb5 3.Rxb5 Rdb8
± (1.39) Depth: 9/21 00:00:01 566kN
1.Ne2 Qa7 2.Rab2 Rab8 3.g3 Be7 4.b5 axb5 5.Rxb5 f5 6.exf6 Nxf6
± (1.26) Depth: 10/24 00:00:03 1606kN
1.b5
± (1.27) Depth: 10/24 00:00:04 1832kN
1.b5 axb5 2.Rxb5 Qa7
± (1.27) Depth: 10/27 00:00:04 2067kN
1.Ra4
± (1.28) Depth: 10/27 00:00:10 4334kN
1.Ra4 Rf8 2.b5 axb5 3.Rxb5 Ne7 4.Qb1 Ra7 5.Rab4 Qa8 6.Bf4 Rxa5
± (1.34) Depth: 10/27 00:00:11 5136kN
1.Ra4
± (1.09) Depth: 11/29 00:00:13 6140kN
1.Ra4 Rf8 2.b5 axb5 3.Qxb5
± (1.09) Depth: 11/29 00:00:14 6317kN
1.b5
± (1.10) Depth: 11/29 00:00:14 6560kN
1.b5 axb5 2.Nxb5 Rf8 3.Rba1 Bg5 4.f4 Be7 5.a6 bxa6 6.Rxa6 Rxa6
± (1.11) Depth: 11/29 00:00:18 8000kN
1.Ne2
± (1.12) Depth: 11/29 00:00:18 8056kN
1.Ne2 Rf8 2.Rab2 Na7 3.f4 f5 4.exf6
+- (1.47) Depth: 11/31 00:00:20 9138kN
1.Ne2
± (1.22) Depth: 12/31 00:00:25 11478kN
1.Ne2 Rf8 2.Nxh6+ gxh6
± (1.04) Depth: 12/31 00:00:30 13705kN
1.b5
± (1.05) Depth: 12/31 00:00:30 13979kN
1.b5 axb5 2.Nxb5 Rf8 3.Nc3 Rxa5 4.Rxa5 Nxa5
± (1.10) Depth: 12/31 00:00:35 16354kN
1.Ra4
± (1.10) Depth: 12/31 00:00:36 16554kN
1.Ra4 Rf8 2.b5 axb5 3.Qxb5 f5 4.Nh2 Qe8 5.Nf3 Qxh5 6.Qxb7 Ne7 7.Qxc7
± (1.25) Depth: 12/32 00:00:39 18116kN
1.Rab2
± (1.26) Depth: 12/32 00:00:56 25761kN
1.Rab2 Qc8 2.Ne2 Rf8 3.b5 axb5 4.Rxb5 Ra7 5.Qc2 Bg5 6.Bxg5 hxg5
+- (1.42) Depth: 12/32 00:01:04 29224kN
1.g3
+- (1.43) Depth: 12/33 00:01:07 30543kN
1.g3 Bg5 2.Bxg5 hxg5 3.Qe3 Re8 4.f4 gxf4 5.Qxf4 Rf8 6.h6 f5 7.hxg7
+- (1.43) Depth: 12/33 00:01:08 30893kN
1.g3 Be7 2.Bxh6 Qc8 3.Bf4 f5 4.exf6 Nxf6 5.Ne5
+- (1.67) Depth: 13/33 00:01:11 32332kN
1.g3 Be7 2.Bxh6 Qc8 3.Be3 f5 4.exf6 Nxf6
+- (1.43) Depth: 14/33 00:01:17 35594kN
1.Bxh6
+- (1.44) Depth: 14/35 00:02:12 61456kN
1.Bxh6 gxh6
+- (1.44) Depth: 14/40 00:02:26 69131kN
1.Bxh6
± (1.19) Depth: 15/43 00:04:09 120mN
1.Bxh6 gxh6 2.g3
± (1.19) Depth: 15/43 00:05:07 151mN
1.g3
± (1.20) Depth: 15/43 00:05:10 152mN
1.g3 Be7 2.Bxh6 Qc8 3.Be3 f5 4.exf6 Nxf6 5.Ne5 Nxe5 6.dxe5 Nd7 7.Bf4 Nf8 8.g4 Qd7 9.g5
± (1.39) Depth: 15/43 00:05:16 155mN

(Soares, Residencia 09.05.2007)

[PauloSoare]

Tord, maybe Bxh6 can be more strong after g3, I made some fast analyses with computer help, and seemed that it is rigth.

Paulo Soares

[Uri Blass]

I wish I could present a nice combination by Glaurung 2, but although my new engine wins more games than it loses against its older brother, it always wins in ugly and boring ways. The position given below, therefore, is from one of the games were Glaurung 1.2.1 won against the new Glaurung:
[d]rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - - 12 27
Glaurung 1.2.1 sacrificed all three (!) minor pieces with 27. Bxh6! gxh6 28. Nxh6+ Kg7 29. Nxf7! Kxf7 30. Qg6+ Ke7 31. Nxd5+!

How long does your favorite engine take to play 27. Bxh6? Glaurung 1.2.1 with a single thread on my Core Duo plays the move after 8 seconds. Glaurung 2-epsilon/2 still does not find it after one minute.

The game:

Code: Select all

[Round "2"]
[White "Glaurung 1.2.1"]
[Black "Glaurung 2-epsilon/2"]
[Result "1-0"]
[TimeControl "240+1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. O-O Be7 7. h3 Bh5 8.
c4 Nb6 9. Nc3 O-O 10. Re1 Bg6 11. a4 d5 12. c5 N6d7 13. a5 a6 14. Bd3 Bxd3
15. Qxd3 Nc6 16. b4 Re8 17. Bd2 Nf8 18. Reb1 Ra7 19. h4 Nd7 20. h5 h6 21.
Bf4 Rf8 22. Bd2 Qb8 23. Ra4 Re8 24. Ra2 Rd8 25. Nh2 Ra8 26. Ng4 Bh4 27.
Bxh6 gxh6 28. Nxh6+ Kg7 29. Nxf7 Kxf7 30. Qg6+ Ke7 31. Nxd5+ exd5 32. Qg7+
Ke6 33. Qg4+ Ke7 34. Qxh4+ Ke6 35. Qg4+ Ke7 36. Qg7+ Ke6 37. Qg6+ Ke7 38.
e6 Nde5 39. Qg7+ Kxe6 40. dxe5 Rf8 41. Qh6+ Ke7 42. e6 Qd8 43. Re1 Rg8 44.
Qh7+ Kf6 45. Qf7+ Kg5 46. e7 Qd7
{Black resigns} 1-0

Tord

I am not sure if 27.Bxh6 is better than 27.g3
black could defend better and 29...Kxf7 may not be the best move

Uri

[Eelco de Groot]

I wish I could present a nice combination by Glaurung 2, but although my new engine wins more games than it loses against its older brother, it always wins in ugly and boring ways. The position given below, therefore, is from one of the games were Glaurung 1.2.1 won against the new Glaurung:
[d]rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - - 12 27
Glaurung 1.2.1 sacrificed all three (!) minor pieces with 27. Bxh6! gxh6 28. Nxh6+ Kg7 29. Nxf7! Kxf7 30. Qg6+ Ke7 31. Nxd5+!

How long does your favorite engine take to play 27. Bxh6? Glaurung 1.2.1 with a single thread on my Core Duo plays the move after 8 seconds. Glaurung 2-epsilon/2 still does not find it after one minute.

The game:

Code: Select all

[Round "2"]
[White "Glaurung 1.2.1"]
[Black "Glaurung 2-epsilon/2"]
[Result "1-0"]
[TimeControl "240+1"]

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 e6 6. O-O Be7 7. h3 Bh5 8.
c4 Nb6 9. Nc3 O-O 10. Re1 Bg6 11. a4 d5 12. c5 N6d7 13. a5 a6 14. Bd3 Bxd3
15. Qxd3 Nc6 16. b4 Re8 17. Bd2 Nf8 18. Reb1 Ra7 19. h4 Nd7 20. h5 h6 21.
Bf4 Rf8 22. Bd2 Qb8 23. Ra4 Re8 24. Ra2 Rd8 25. Nh2 Ra8 26. Ng4 Bh4 27.
Bxh6 gxh6 28. Nxh6+ Kg7 29. Nxf7 Kxf7 30. Qg6+ Ke7 31. Nxd5+ exd5 32. Qg7+
Ke6 33. Qg4+ Ke7 34. Qxh4+ Ke6 35. Qg4+ Ke7 36. Qg7+ Ke6 37. Qg6+ Ke7 38.
e6 Nde5 39. Qg7+ Kxe6 40. dxe5 Rf8 41. Qh6+ Ke7 42. e6 Qd8 43. Re1 Rg8 44.
Qh7+ Kf6 45. Qf7+ Kg5 46. e7 Qd7
{Black resigns} 1-0

Tord

I am not sure if 27.Bxh6 is better than 27.g3
black could defend better and 29...Kxf7 may not be the best move

Uri

For some reason Toga 1.3x4 also did not like 27.Bxh6 although all the Glaurung settings I tried eventually play it.

By the way I think it is a pity if Glaurung's Position Learning feature would go if Tord thinks that Glaurung is not used for analysis purposes, as I posted earlier. I have used Glaurung often to analyze Chess960 positions, usually with multi PV on to test a lot of possible moves in the opening position. Because I prefer to have directly reproducible results that I can post or other people could check, I usually leave position learning off. But the majority of people that analyze their games or make opening books will be doing this with position learning on. So maybe with a bigger cache it would be used even more!

Some quick results for the position:

rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - -

Engine: Glaurung 1.2.1 Express 6f (256 MB)
gemaakt door Tord Romstad

2.00 0:00 +0.46 27.Lf4 Kf8 (173) 0

2.00 0:00 +0.48 27.g3 Lg5 28.Lxg5 hxg5 (297) 1

3.00 0:00 +0.48 27.g3 Lg5 28.Lxg5 hxg5 (523) 2

4.00 0:00 +0.32 27.g3 Le7 28.f3 Kf8 (2.525) 11

4.00 0:00 +0.35 27.b5 axb5 28.Pxb5 Kf8 (5.069) 21

4.00 0:00 +1.18 27.Lxh6 gxh6 28.Pxh6+ Kf8 29.Dh7 (7.246) 30

5.00 0:00 +0.26 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Dh3 Kxh6
30.Dxh4 (8.924) 35

5.00 0:00 +0.28 27.b5 axb5 28.Pxb5 Le7 29.Df3 (11.790) 47

6.00 0:00 +0.37 27.b5 axb5 28.Pxb5 Ta6 29.Df3 Tf8 (21.142) 75

6.00 0:00 +0.98 27.g3 Le7 28.Lxh6 gxh6 29.Pxh6+ Kf8
30.Dh7 (43.942) 127

7.00 0:00 +0.28 27.g3 Le7 28.b5 Pxd4 29.bxa6 Txa6
30.Dxd4 Lxc5 (52.224) 145

7.00 0:00 +0.39 27.Lf4 Tf8 28.Pxh6+ gxh6 29.Lxh6 Dd8
30.Lxf8 Dxf8 (63.729) 162

8.00 0:00 +0.40 27.Lf4 Tf8 28.Pxh6+ gxh6 29.Lxh6 Dd8
30.Lxf8 Dxf8 31.g4 (132.907) 229

9.00 0:01 +0.29 27.Lf4 Le7 28.Tab2 Da7 29.Td1 Te8
30.Tbb1 Kf8 31.Dh7 (368.432) 302

10.01 0:02 +0.35 27.Lf4 Le7 28.b5 axb5 29.Txb5 Pxd4
30.Dxd4 c6 31.Tb1 Pxc5 (889.760) 332

10.15 0:03 +0.59 27.b5 axb5 28.Txb5 Ta6 29.Tab2 Pxa5
30.Lxh6 gxh6 31.Pxh6+ Kf8 32.Dh7 (1.234.966) 340

11.01 0:04 +0.32 27.b5 axb5 28.Pxb5 Ta6 29.Dh3 Lg5
30.Lxg5 hxg5 31.De3 Txa5 32.Txa5 Pxa5
33.Dxg5 (1.578.928) 347

11.05 0:09 +0.42 27.Ta3 Te8 28.Pe2 Tf8 29.b5 axb5
30.Txb5 f5 31.exf6 Pxf6 32.Pxh6+ gxh6
33.Dg6+ Kh8 34.Lxh6 (3.500.128) 356

12.01 0:15 +0.48 27.Ta3 Te8 28.b5 axb5 29.Txb5 f5
30.exf6 Pxf6 31.Pxf6+ Lxf6 32.a6 Lxd4
33.Txb7 (5.746.413) 360

12.06 0:21 +1.00 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dh7+ Ke8 31.Dg6+ Ke7 32.Dg7+ Ke8
33.h6 Pf8 34.h7 Pxh7 35.Dxh7 Le7
36.Dg8+ Kd7 (7.755.877) 362

13.01 0:24 +0.76 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dh7+ Ke8 31.Dg6+ Ke7 32.Dg4 Tg8
33.Dxh4+ Kf7 34.Te2 Dd8 35.Df4+ Ke8
36.h6 (9.052.775) 365

14.01 0:38 +1.56 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Pxd5+ exd5 32.Dg7+ Ke6
33.Dg4+ Kf7 34.e6+ Ke7 35.exd7 Kf8
36.Dxh4 Txd7 37.Te2 Dd8 38.Dg4 (14.402.435) 370

15.01 0:59 +1.62 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Pxd5+ exd5 32.Dg7+ Ke6
33.Dg4+ Kf7 34.e6+ Ke7 35.exd7 Lf6
36.Te2+ Kf8 37.Df5 Kg8 38.Dxf6 Txd7
39.De6+ Tf7 40.Dxd5 (22.269.789) 372

16.01 1:43 +1.62 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Pxd5+ exd5 32.Dg7+ Ke6
33.Dg4+ Kf7 34.e6+ Ke7 35.exd7 Lf6
36.Te2+ Kf8 37.Df5 Kg8 38.Dxf6 Txd7
39.De6+ Tf7 40.Dxd5 (38.303.047) 371

17.01 13:05 +2.03 27.Lxh6 Tf8 28.Dh3 gxh6 29.Dxh4 Kh7
30.Dg3 Dd8 31.b5 axb5 32.Pxb5 Kg7
33.Df4 Dg5 34.Dxg5+ hxg5 35.Pxc7 Txa5
36.Txa5 Pxa5 (294.419.259) 374


rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - -

Engine: Glaurung 1.2.1 Default (256 MB)
gemaakt door Tord Romstad

2.00 0:00 +0.50 27.Lf4 Kf8 (170) 0

3.00 0:00 +0.21 27.Lf4 Kf8 28.Te2 (463) 2

3.00 0:00 +0.46 27.g3 Lg5 28.Lxg5 hxg5 (593) 2

4.00 0:00 +0.35 27.g3 Le7 28.f3 Kf8 (2.490) 11

4.00 0:00 +0.39 27.Lf4 Da7 28.Te2 Kf8 (4.076) 18

4.00 0:00 +0.73 27.Lxh6 gxh6 28.Pxh6+ Kf8 29.Dh7 (7.416) 31

5.00 0:00 0.00 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Dh3 Th8 (9.317) 39

5.00 0:00 +0.25 27.Lf4 Da7 28.Td2 Le7 29.Te2 (11.626) 46

6.00 0:00 +0.35 27.Lf4 f5 28.exf6 Pxf6 29.Pxf6+ Lxf6
30.Pe2 (33.223) 106

6.00 0:00 +0.54 27.g3 Le7 28.Lxh6 gxh6 29.Pxh6+ Kf8
30.Dh7 (40.211) 122

7.00 0:00 +0.28 27.g3 Le7 28.b5 axb5 29.Pxb5 Kf8
30.Dh7 (46.714) 135

7.00 0:00 +0.34 27.Ta4 Le7 28.b5 axb5 29.Pxb5 Kf8
30.Dh7 (106.613) 213

8.00 0:00 +0.26 27.Ta4 Le7 28.b5 axb5 29.Pxb5 Te8
30.Ta2 Kf8 (122.125) 223

8.00 0:00 +0.34 27.b5 axb5 28.Txb5 f5 29.exf6 Pxf6
30.Pxf6+ Lxf6 31.a6 (182.014) 258

9.00 0:00 +0.29 27.b5 axb5 28.Pxb5 Ta6 29.Df3 Kf8
30.Pxh6 gxh6 31.Lxh6+ Ke8 (275.606) 294

9.03 0:01 +0.31 27.Ta4 Da7 28.b5 axb5 29.Dxb5 f5
30.exf6 Pxf6 31.Pxf6+ Lxf6 (415.724) 320

10.01 0:02 +0.35 27.Ta4 Ta7 28.Lf4 Le7 29.Ta2 Ta8
30.b5 axb5 31.Txb5 Kf8 (969.855) 348

11.01 0:04 +0.32 27.Ta4 Ta7 28.b5 axb5 29.Pxb5 Ta8
30.Ta3 Pa7 31.Pc3 Pc6 32.a6 (1.410.691) 352

12.01 0:12 +0.40 27.Ta4 Ta7 28.Ta3 Ta8 29.b5 axb5
30.Pxb5 Pe7 31.g3 Lg5 32.Lxg5 hxg5 (4.799.865) 369

12.05 0:21 +0.75 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg4 Tg8 32.Dxh4+ Kf8
33.Df4+ Ke8 34.h6 Dd8 (8.237.764) 377

13.01 0:24 +0.57 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg4 Lxf2+ 32.Txf2 Tg8
33.Dh4+ Ke8 34.h6 Da7 35.h7 Th8 (9.439.754) 379

14.01 0:33 +0.96 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Pxd5+ exd5 32.Dg7+ Ke6
33.Dg4+ Ke7 34.Dxh4+ Kf7 35.Df4+ Kg8
36.e6 Pf8 37.Df7+ Kh8 38.e7 Pxe7
39.Df6+ Kg8 40.Dxe7 (12.964.670) 384

15.01 1:04 +1.42 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Pxd5+ exd5 32.Dg7+ Ke6
33.Dg4+ Ke7 34.Dxh4+ Ke8 35.e6 Dc8
36.e7 Pxe7 37.Te2 Pe5 38.Txe5 (25.140.147) 388


rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - -

Engine: Glaurung 1.2.1 Express 6e (256 MB)
gemaakt door Tord Romstad

2.00 0:00 +0.51 27.Lf4 Kf8 (170) 0

3.00 0:00 +0.23 27.Lf4 Kf8 28.Te2 (459) 2

3.00 0:00 +0.51 27.g3 Lg5 28.Lxg5 hxg5 (592) 2

4.00 0:00 +0.37 27.g3 Le7 28.f3 Kf8 (2.513) 11

4.00 0:00 +0.40 27.Lf4 Da7 28.Te2 Kf8 (3.765) 17

4.00 0:00 +1.18 27.Lxh6 gxh6 28.Pxh6+ Kf8 29.Dh7 (7.743) 32

5.00 0:00 -0.17 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.b5 Pcxe5 (9.231) 39

5.00 0:00 +0.35 27.Tc2 Da7 28.g3 Lg5 29.Lxg5 hxg5 (10.718) 42

6.00 0:00 +0.37 27.Tc2 f5 28.exf6 Pxf6 29.Pxh6+ gxh6
30.Dg6+ Kh8 31.Dxh6+ Ph7 (31.662) 106

6.00 0:00 +0.48 27.Lf4 Tf8 28.b5 axb5 29.Txb5 Da7 (53.671) 149

6.00 0:00 +0.98 27.g3 Le7 28.Lxh6 gxh6 29.Pxh6+ Kf8
30.Dh7 (57.874) 154

7.00 0:00 +0.34 27.g3 Le7 28.b5 Pxd4 29.Dxd4 Lxc5
30.Dd3 axb5 31.Pxb5 (65.986) 168

8.00 0:00 +0.43 27.g3 Le7 28.f3 Tf8 29.Le3 Te8
30.Kg2 Kf8 (159.667) 243

9.00 0:00 +0.25 27.g3 Le7 28.f3 Tf8 29.Le3 Te8
30.Kg2 Da7 31.Tc2 (208.172) 266

9.00 0:01 +0.26 27.Lf4 Tf8 28.Ta3 Da7 29.b5 axb5
30.Pxb5 Db8 31.Ld2 (340.515) 298

9.22 0:02 +0.32 27.Tab2 Da7 28.Td1 Tf8 29.b5 axb5
30.Pxb5 Db8 31.Ta1 (801.609) 333

10.01 0:03 +0.39 27.Tab2 Dc8 28.Td1 Le7 29.Lf4 Tf8
30.Tbb1 Te8 31.Te1 Kf8 (1.326.199) 343

11.01 0:06 +0.37 27.Tab2 Dc8 28.Td1 Le7 29.Lf4 Tf8
30.Pxh6+ gxh6 31.Lxh6 Lh4 32.Lxf8 Dxf8 (2.196.549) 350

12.01 0:13 +0.42 27.Tab2 Dc8 28.Td1 Db8 29.g3 Le7
30.Le3 Tf8 31.f3 Te8 32.Tdb1 Da7 (4.944.297) 361

12.02 0:18 +0.59 27.Pe2 Da7 28.Df3 Kf8 29.Pxh6 gxh6
30.Lxh6+ Ke8 31.Dg4 Le7 32.Dg8+ Lf8
33.Lg5 Tdc8 (6.710.489) 366

12.06 0:23 +1.00 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg7+ Ke8 32.h6 Pf8
33.h7 Pxh7 34.Dxh7 Le7 35.Dg8+ Kd7 (8.554.956) 368

13.01 0:26 +0.93 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg7+ Ke8 32.Pxd5 Pxd4
33.Pf6+ Lxf6 34.exf6 Pxf6 35.Dxf6 Td7
36.Dh8+ Kf7 37.Dh7+ Ke8 38.Dg8+ Ke7 (9.725.161) 370

14.01 0:36 +1.32 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Pxd5+ exd5 32.Dg7+ Ke6
33.Dg4+ Ke7 34.Dxh4+ Ke8 35.h6 Pf8
36.h7 Pxh7 37.Dxh7 Pxd4 38.Dg8+ Kd7
39.Dxd5+ Kc8 (13.851.475) 374

14.04 0:45 +1.43 27.g3 Lg5 28.Lxg5 hxg5 29.f3 Kf8
30.h6 gxh6 31.Pxh6 Pdxe5 32.dxe5 Pxe5
33.Dh7 Pxf3+ 34.Kg2 (17.130.016) 378

15.01 0:51 +1.39 27.g3 Lg5 28.Lxg5 hxg5 29.f3 Kf8
30.h6 gxh6 31.Pxh6 Kg7 32.Pg4 Kf8
33.Dh7 Pxd4 34.Dh8+ Ke7 (19.558.005) 378

16.01 1:28 +1.40 27.g3 Le7 28.Lxh6 Dc8 29.Le3 f5
30.h6 g6 31.f3 Kh7 32.Pf6+ Pxf6
33.exf6 Lxf6 34.Th2 Kg8 35.h7+ Kf7 (33.926.655) 384

16.02 3:22 +1.81 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Pxd5+ exd5 32.Dg7+ Ke6
33.Dg4+ Kf7 34.e6+ Ke7 35.exd7 Lf6
36.Te1+ Kf8 37.Df5 Kg8 38.Tae2 Lxd4
39.Te8+ Txe8 40.dxe8D+ (77.524.203) 382


rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - -

Engine: Toga 1.3 "Checkov" 2 (256 MB)
gemaakt door Thomas Gaksch and Fabien Letouzey

1/02 0:00 -0.48 27.Tba1 Pxb4 (3)

1/02 0:00 -0.43 27.Tc1 Pxb4 (5)

1/02 0:00 -0.42 27.Td1 Pxb4 (7)

1/02 0:00 -0.36 27.Te1 Pxb4 (9)

1/02 0:00 -0.10 27.Tbb2 (12)

1/02 0:00 -0.05 27.Tb3 (13)

1/02 0:00 -0.03 27.Taa1 (17)

1/02 0:00 -0.02 27.Tab2 (18)

1/02 0:00 +0.04 27.Tc2 (19)

1/06 0:00 +0.86 27.Pxh6+ gxh6 28.Lxh6 Da7 (212)

2/11 0:00 +0.56 27.Pxh6+ gxh6 28.Lxh6 Da7 29.Te2 (705)

3/12 0:00 +0.52 27.Pxh6+ gxh6 28.Lxh6 Kh8 29.g4 Tg8 (5.387)

3/12 0:00 +0.56 27.g3 Le7 28.Pxh6+ gxh6 29.Lxh6 Da7 (5.916)

4/13 0:00 +0.19 27.g3 Le7 28.Pxh6+ gxh6 29.Lxh6 Lf8
30.Lg5 (7.415)

4/14 0:00 +0.69 27.Pxh6+ gxh6 28.Lxh6 Kh8 29.Dh3 Le7
30.Dg4 (12.403)

5/22 0:00 +0.66 27.Pxh6+ gxh6 28.Lxh6 Kh8 29.Dh3 Le7
30.Dg4 Tg8 (21.573)

6/22 0:00 +0.56 27.Pxh6+ gxh6 28.Lxh6 Kh8 29.Dh3 Le7
30.Td2 Da7 31.Dg4 (41.651)

7/26 0:00 +0.44 27.Pxh6+ gxh6 28.Lxh6 Kh8 29.Dh3 Le7
30.Td2 Kh7 31.De3 Kh8 (131.761)

8/32 0:00 +0.33 27.Pxh6+ gxh6 28.Lxh6 Kh8 29.Dh3 Le7
30.Td2 Da7 31.Df3 f5 32.Dg3 (575.421)

8/32 0:01 +0.36 27.Tab2 Da7 28.Te1 Le7 29.Lf4 Lf8
30.f3 Le7 (866.119) 640

8/32 0:02 +0.73 27.Df3 f5 28.exf6 Lxf6 29.Pxf6+ Pxf6
30.Lxh6 Pxd4 31.De3 gxh6 32.Dxd4 Pxh5
33.Dg4+ Pg7 (1.774.353) 640

9/33 0:03 +0.73 27.Df3 f5 28.exf6 Lxf6 29.Pxf6+ Pxf6
30.Lxh6 Pxd4 31.De3 gxh6 32.Dxd4 Pxh5
33.Dg4+ Pg7 (2.064.826) 643

10/40 0:05 +0.57 27.Df3 Le7 28.Dg3 Kh8 29.Lxh6 Pxd4
30.Dd3 Pf5 31.Lf4 Kg8 (3.298.924) 650

11/44 0:08 +0.83 27.Df3 Le7 28.Dg3 Kh8 29.Lxh6 Pxd4
30.Dd3 Pc6 31.Lf4 Da7 32.Td2 (5.369.446) 652

12/50 0:11 +0.70 27.Df3 Le7 28.Dg3 Kh8 29.Lxh6 Pxd4
30.Dd3 Pc6 31.Lf4 Da7 32.Td2 Kg8 (7.485.792) 660

13/60 0:32 +0.73 27.Df3 Le7 28.Pxh6+ gxh6 29.Lxh6 Lf8
30.Dg3+ Kh7 31.Le3 Le7 32.h6 Tg8
33.Dh3 Lg5 34.Pxd5 exd5 35.Lxg5 Txg5
36.Dxd7 Kxh6 37.Dxf7 Pxd4 38.Dxd5 (21.632.404) 669

13/62 0:51 +1.52++ 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg4 Pf8 32.Dxh4+ Ke8
33.h6 Td7 34.Dh5+ Tf7 35.Td2 Dd8
36.Dg4 Dd7 (34.674.602) 668

14/62 0:56 +1.50 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg4 Pf8 32.Dxh4+ Ke8
33.h6 Td7 34.Td2 Dd8 35.Dg4 Th7
36.Dh3 Dg5 (38.178.702) 670

15/62 1:18 +1.57 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Tg8
30.Dg6+ Kf8 31.Dxe6 De8 32.Dxd5 Dxf7
33.e6 Df4 34.exd7 Tg5 35.De4 Dxe4
36.Pxe4 Txh5 37.Td2 Kf7 (53.000.961) 678

16/72 2:31 +1.24 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Tg8
30.Dg6+ Kf8 31.Dxe6 De8 32.Dxd5 Dxf7
33.e6 Df4 34.exd7 Tg5 35.De4 Dxe4
36.Pxe4 Txh5 37.g3 Le7 38.Td2 Kf7 (105.417.346) 695

17/76 5:31 +1.34 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Tg8
30.Dg6+ Kf8 31.Dxe6 De8 32.Dxd5 Dxf7
33.e6 Df4 34.Dxd7 Df3 35.Df7+ Dxf7
36.exf7 Kxf7 37.d5 Pd4 38.h6 Tae8
39.d6 cxd6 40.cxd6 (233.873.032) 705


rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - -

Engine: Toga II 1.3x4 Default, no bitbases (256 MB)
gemaakt door Thomas Gaksch and Fabien Letouzey

1/02 0:00 -0.42 27.Tba1 Pxb4 (3)

1/02 0:00 -0.38 27.Tc1 Pxb4 (5)

1/02 0:00 -0.36 27.Td1 Pxb4 (7)

1/02 0:00 -0.31 27.Te1 Pxb4 (9)

1/02 0:00 -0.05 27.Tbb2 (12)

1/02 0:00 -0.01 27.Tb3 (13)

1/02 0:00 +0.01 27.Taa1 (17)

1/02 0:00 +0.08 27.Tc2 (19)

1/06 0:00 +0.48 27.Pxh6+ gxh6 28.Lxh6 Da7 (212)

2/11 0:00 +0.19 27.Pxh6+ gxh6 28.Lxh6 Da7 29.Te2 (708)

2/11 0:00 +0.34 27.Tc2 Da7 (756)

3/11 0:00 +0.37 27.Tc2 Kh8 28.Pxh6 gxh6 29.Lxh6 (5.077)

4/16 0:00 +0.22 27.Tc2 Da7 28.Lf4 Te8 (12.362)

4/16 0:00 +0.27 27.Dh3 Le7 28.Pxh6+ gxh6 29.Lxh6 Kh8
30.Dd3 (13.805)

5/24 0:00 +0.19 27.Dh3 Le7 28.Dg3 Kh8 29.Lxh6 gxh6
30.Pxh6 (34.739)

5/24 0:00 +0.24 27.Tc2 Da7 28.Lf4 Kh8 29.Pxh6 gxh6
30.Lxh6 (42.751)

5/24 0:00 +0.27 27.Pxh6+ gxh6 28.Lxh6 Kh8 29.Dh3 Le7
30.Dg4 Tg8 (63.244)

5/24 0:00 +0.41 27.Df3 Le7 28.Lxh6 Pxd4 29.Dd3 (80.274)

6/24 0:00 +0.44 27.Df3 Da7 28.Pxh6+ gxh6 29.Lxh6 f5
30.Dh3 Kh7 31.Dxh4 Kxh6 (108.160)

7/32 0:00 +0.34 27.Df3 Le7 28.Pxh6+ gxh6 29.Lxh6 Lf8
30.Dg4+ Kh8 31.Lxf8 Pxf8 32.Td2 Pd7 (197.176)

8/32 0:00 +0.34 27.Df3 Dc8 28.Lxh6 Pxd4 29.Dd3 Pf5
30.Le3 Pxe3 31.Dxe3 (551.955)

8/32 0:00 +0.43 27.Dh3 Le7 28.Dg3 Kh7 29.Df3 f5
30.exf6 Pxf6 31.Te1 Pxh5 32.Txe6 Pxd4 (633.599)

9/40 0:01 +0.53 27.Dh3 Le7 28.Dg3 Kh8 29.Lxh6 Pxd4
30.Df4 Pf5 31.Lg5 (792.829) 660

10/40 0:01 +0.53 27.Dh3 Le7 28.Dg3 Kh8 29.Lxh6 Pxd4
30.Df4 Pf5 31.Lg5 Lxg5 32.Dxg5 (1.156.602) 672

11/49 0:04 +0.36 27.Dh3 Le7 28.Df3 f5 29.exf6 Pxf6
30.Lxh6 Pxd4 31.Pxf6+ Lxf6 32.Dg4 Pf5
33.Ld2 Dc8 34.Te1 (3.212.519) 672

11/50 0:07 +0.48 27.Df3 Le7 28.Pxh6+ gxh6 29.Lxh6 Lf8
30.Ld2 Le7 31.h6 Kf8 32.h7 Kg7
33.Dh3 Da7 34.Tc2 Te8 35.Dh6+ Kh8 (4.805.016) 675

11/50 0:08 +0.58 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg7+ Ke8 32.h6 Pf8
33.h7 Pxh7 34.Dxh7 Le7 35.Td2 Kd7
36.Df7 Th8 (6.015.788) 675

12/50 0:13 +1.20++ 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg4 Kf7 32.Dxh4 Th8
33.h6 Dg8 34.b5 axb5 35.Pxb5 Tc8
36.a6 Dg6 (9.507.107) 680

13/56 0:17 +1.08 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg4 Tg8 32.Dxh4+ Kf7
33.Df4+ Ke8 34.h6 Pf8 35.Td2 Dd8
36.Dh2 Pg6 (12.280.238) 685

14/64 0:30 +0.87 27.Lxh6 gxh6 28.Pxh6+ Kg7 29.Pxf7 Kxf7
30.Dg6+ Ke7 31.Dg4 Tg8 32.Dxh4+ Kf7
33.Df4+ Ke7 34.h6 Tg6 35.h7 Dh8
36.Dh4+ Kf7 37.Pe2 Ke8 38.Pf4 (21.494.643) 698

14/64 1:03 +1.10 27.g3 Lg5 28.Lxg5 hxg5 29.b5 axb5
30.Txb5 Dc8 31.Ta4 Te8 32.Dd2 Dd8
33.Txb7 Pxa5 34.Tb1 Pc4 35.Txa8 Pxd2
36.Txd8 Txd8 (44.205.883) 699

15/64 2:01 +1.11 27.g3 f5 28.exf6 Lxf6 29.Pxf6+ Pxf6
30.Lxh6 Td7 31.Lg5 Pxh5 32.Te2 De8
33.Tbe1 Df7 34.Txe6 Tf8 35.f4 Pxb4
36.Df3 (84.477.495) 697

16/70 4:08 +1.13 27.g3 f5 28.gxh4 fxg4 29.Lxh6 Te8
30.Lg5 Tf8 31.h6 De8 32.h7+ Kh8
33.b5 axb5 34.Pxb5 Tf3 35.Dc2 Dh5
36.a6 bxa6 37.Ta4 Taf8 (173.665.502) 697

17/72 5:51 +1.41 27.g3 f5 28.gxh4 fxg4 29.Lxh6 Te8
30.Lg5 Tf8 31.h6 De8 32.b5 axb5
33.Pxb5 Tf3 34.Df1 Dc8 35.hxg7 Kxg7
36.Dg2 Txa5 37.Txa5 Pxa5 38.Dxg4 (245.604.403) 697

18/74 10:24 +1.33 27.g3 f5 28.gxh4 fxg4 29.Lxh6 Te8
30.Lg5 Tf8 31.h6 De8 32.b5 axb5
33.Pxb5 Tf3 34.Df1 gxh6 35.Pxc7 Dc8
36.Pxa8 hxg5 37.a6 Dxa8 38.Txb7 gxh4
39.Txd7 Pxd4 (442.871.916) 709

19/80 30:38 +1.33 27.g3 f5 28.gxh4 fxg4 29.Lxh6 Te8
30.Lg5 Tf8 31.h6 De8 32.b5 axb5
33.Pxb5 Tf3 34.Df1 gxh6 35.Pxc7 Dc8
36.Pxa8 hxg5 37.a6 Dxa8 38.Txb7 gxh4
39.Txd7 Pxd4 (1.319.265.716) 717

Eelco

[Alessandro Scotti]

Alessandro, look

Analysis by HIARCS 11.1 MP UCI:

1.g3
± (1.20) Depth: 15/43 00:05:10 152mN[/b]
1.g3 Be7 2.Bxh6 Qc8 3.Be3 f5 4.exf6 Nxf6 5.Ne5 Nxe5 6.dxe5 Nd7 7.Bf4 Nf8 8.g4 Qd7 9.g5
± (1.39) Depth: 15/43 00:05:16 155mN

(Soares, Residencia 09.05.2007)

Hey Paulo thanks a lot! It seems g3 wasn't so bad after all!

[royb]

Interesting that TogaII-1.3-X4 (defaults with 512 MB Hash) comes up with Bxh6 and stays with it :

FEN: rq1r2k1/1ppn1pp1/p1n1p2p/P1PpP2P/1P1P2Nb/2NQ4/R2B1PP1/1R4K1 w - - 0 27

TogaII-1.3X4:
1/2 00:00 3 0 -0.42 27.Rba1 Nxb4
1/2 00:00 5 0 -0.38 27.Rc1 Nxb4
1/2 00:00 7 0 -0.36 27.Rd1 Nxb4
1/2 00:00 9 0 -0.31 27.Re1 Nxb4
1/2 00:00 12 0 -0.05 27.Rbb2
1/2 00:00 13 0 -0.01 27.Rb3
1/2 00:00 17 0 +0.01 27.Raa1
1/2 00:00 19 0 +0.08 27.Rc2
1/6 00:00 212 0 +0.48 27.Nxh6+ gxh6 28.Bxh6 Qa7
2/11 00:00 714 0 +0.19 27.Nxh6+ gxh6 28.Bxh6 Qa7 29.Re2
2/11 00:00 762 0 +0.34 27.Rc2 Qa7
3/11 00:00 5.076 0 +0.37 27.Rc2 Kh8 28.Nxh6 gxh6 29.Bxh6
4/16 00:00 12.364 0 +0.22 27.Rc2 Qa7 28.Bf4 Re8
4/16 00:00 13.834 0 +0.27 27.Qh3 Be7 28.Nxh6+ gxh6 29.Bxh6 Kh8 30.Qd3
5/24 00:00 34.495 0 +0.19 27.Qh3 Be7 28.Qg3 Kh8 29.Bxh6 gxh6 30.Nxh6
5/24 00:00 39.984 0 +0.24 27.Rc2 Qa7 28.Bf4 Kh8 29.Nxh6 gxh6 30.Bxh6
5/24 00:01 60.777 0 +0.27 27.Nxh6+ gxh6 28.Bxh6 Kh8 29.Qh3 Be7 30.Qg4 Rg8
5/24 00:01 77.381 0 +0.30 27.Qf3 Re8 28.Bxh6 Nxd4 29.Qd3
6/24 00:01 101.129 0 +0.44 27.Qf3 Re8 28.Bxh6 Nxd4 29.Qd3 Nf5
7/24 00:01 239.326 0 +0.38 27.Qf3 Be7 28.Nxh6+ gxh6 29.Bxh6 Bf8 30.Qg4+ Kh8 31.Bg5 Be7 32.Bxe7 Nxe7
8/30 00:01 512.516 0 +0.34 27.Qf3 f5 28.exf6 Bxf6 29.Nxf6+ Nxf6 30.Bxh6 Rf8 31.Bg5 Ne4 32.Qe3 Nxg5 33.Qxg5 Nxd4
8/32 00:01 576.295 0 +0.48 27.Qh3 Be7 28.Qg3 Kh8 29.Bxh6 gxh6 30.Nxh6 Rf8 31.Rd2 f5 32.exf6 Bxf6
9/36 00:02 833.057 563.202 +0.34 27.Qh3 Be7 28.Qf3 f5 29.exf6 Bxf6 30.Nxf6+ Nxf6 31.Bxh6 Rf8 32.Bg5 Ne4 33.Qe3 Nxg5 34.Qxg5 Nxd4
10/39 00:04 1.551.934 593.111 +0.34 27.Qh3 Be7 28.Qf3 f5 29.exf6 Bxf6 30.Nxf6+ Nxf6 31.Bxh6 Rf8 32.Bg5 Ne4 33.Qe3 Nxg5 34.Qxg5 Nxd4
11/50 00:09 5.942.896 629.695 +0.38 27.Qh3 Be7 28.Qf3 Kf8 29.Be3 Kg8 30.Nxh6+ gxh6 31.Bxh6 Bf8 32.Qg4+ Kh8 33.Bg5 Be7 34.Bxe7 Nxe7
11/50 00:11 6.777.934 634.132 +0.45 27.Ra4 Ra7 28.Qf3 Nxd4 29.Nxh6+ gxh6 30.Qg4+ Bg5 31.Bxg5 Nxe5 32.Qxd4 Nc6 33.Qh4 hxg5 34.Qxg5+ Kf8
12/50 00:14 8.631.175 640.232 +0.45 27.Ra4 Ra7 28.Qf3 Nxd4 29.Nxh6+ gxh6 30.Qg4+ Bg5 31.Bxg5 Nxe5 32.Qxd4 Nc6 33.Qh4 hxg5 34.Qxg5+ Kf8
12/54 00:32 21.120.597 655.397 +0.69 27.b5 axb5 28.Nxb5 Ra6 29.Qf3 Kf8 30.Qh3 Be7 31.Qg3 Na7 32.Rab2 Nc6 33.Bxh6 Nxc5 34.dxc5 gxh6 35.Nxh6 Bxc5
12/58+ 00:38 24.611.075 656.112 +1.03 27.Bxh6 gxh6 28.Nxh6+ Kg7 29.Nxf7 Kxf7 30.Qg6+ Ke7 31.Qg4 Rg8 32.Qxh4+ Kf8 33.h6 Rg6 34.Rd2 Qd8 35.Qh5 Qg5
13/58 00:41 27.236.247 659.469 +1.07 27.Bxh6 gxh6 28.Nxh6+ Kg7 29.Nxf7 Kxf7 30.Qg6+ Ke7 31.Qg4 Rg8 32.Qxh4+ Kf8 33.h6 Rg6 34.Rd2 Kg8 35.h7+ Kg7 36.f4 Qh8
14/64 00:54 35.785.907 665.218 +0.94 27.Bxh6 gxh6 28.Nxh6+ Kg7 29.Nxf7 Kxf7 30.Qg6+ Ke7 31.Qg4 Rg8 32.Qxh4+ Kf8 33.h6 Rg6 34.Ne2 Qe8 35.Nf4 Nxd4 36.Nxg6+ Qxg6 37.Qf4+ Nf5 38.c6 bxc6
14/64 01:29 60.133.622 674.692 +1.03 27.g3 f5 28.exf6 Bxf6 29.Nxf6+ Nxf6 30.Bxh6 Rd7 31.Be3 Qe8 32.h6 e5 33.hxg7 e4 34.Qe2 Rxg7 35.b5 axb5 36.Qxb5 Ra7 37.Bh6 Rg6
15/64 01:49 73.910.177 678.929 +1.06 27.g3 f5 28.exf6 Bxf6 29.Nxf6+ Nxf6 30.Bxh6 Rd7 31.Be3 Qe8 32.h6 gxh6 33.Bf4 Ne4 34.Nxe4 dxe4 35.Qxe4 Rxd4 36.Qe1 Qf7 37.Re2 Re8 38.Bxh6
15/72+ 02:37 107.492.157 684.747 +1.63 27.Bxh6 gxh6 28.Nxh6+ Kg7 29.Nxf7 Kxf7 30.Qg6+ Ke7 31.Nxd5+ exd5 32.Qg7+ Ke6 33.Qg4+ Kf7 34.e6+ Ke7 35.Re2 Nde5 36.dxe5 Rf8 37.Qxh4+ Kxe6 38.Qg4+ Ke7 39.Rd1 d4 40.e6 Ke8 41.Rxd4 Nxd4 42.Qxd4
16/76 03:37 149.400.685 689.722 +1.57 27.Bxh6 gxh6 28.Nxh6+ Kg7 29.Nxf7 Kxf7 30.Qg6+ Ke7 31.Nxd5+ exd5 32.Qg7+ Ke6 33.Qg4+ Kf7 34.e6+ Ke7 35.Re2 Nde5 36.dxe5 Rf8 37.Qxh4+ Kxe6 38.Qg4+ Ke7 39.Rd1 d4 40.e6 Qd8 41.Rb1 d3 42.Qh4+ Ke8
17/76 07:31 311.035.030 689.116 +1.69 27.Bxh6 gxh6 28.Nxh6+ Kg7 29.Nxf7 Rg8 30.Qg6+ Kf8 31.Qxe6 Qe8 32.Qxd5 Qxf7 33.e6 Qf6 34.exd7 Rg5 35.Qe4 Rxh5 36.Re2 Kg7 37.Rd1 Qf7 38.Qg4+ Bg5

Eelco's efforts showed that TogaII-1.3-X4 would not come up with Bxh6. I can only guess that hash table size has something to do with this; our two processors seem about the same speed (based on time to reach depth 16 for example).

All in all, Bxh6 is a very interesting move.

Roy