Related to a recent testposition. We know 1. h4 is not best, probably third best move. 1. Ng4 wins outright, and 1. Kh1 Kh8 promising, but if 1. h4, not every engine will find 1...Kh8 (to make way for Rg8) But now, does White still have some compensation for the Black extra pawn? As a human I would like to play Kh2 followed by Rh1, but Kaissa thinks that is not one of the best five. Still there is a slight plus if I let Kaissa think long enough. Is it right?
[d]r3r2k/1b1nbp1p/1qn1p3/1p1pPp2/p2P3P/P2BNN2/1P1Q1BP1/R4RK1 w - - (After 1. h4 Kh8 in the original from Mike)
37 67:17 +1.11 2.Nxf5 exf5 3.Bxf5 Bc8 4.Qh6 Nf8 5.Bd3 Ra6 6.Qh5 Na5 7.Qxf7 Bd7 8.Ng5 Bxg5 9.hxg5 Nc4 10.Qh5 Ng6 11.Be3 Ncxe5 12.Rf6 Nxd3 13.Rxb6 Rxb6 14.Rf1 Re7 15.Bd2 (5.544.069.642) 1373
37 67:17 +1.00 2.Nxd5 exd5 3.Bxf5 Bc8 4.Qh6 Nf8 5.Bd3 Ra6 6.Qh5 Na5 7.Qxf7 Bd7 8.Ng5 Bxg5 9.hxg5 Nc4 10.Qh5 Ng6 11.Be3 Ncxe5 12.Rf6 Nxd3 13.Rxb6 Rxb6 14.Rf1 Re7 15.Bd2 (5.544.069.642) 1373
37 67:17 +0.53 2.Rae1 Rg8 3.Bxf5 exf5 4.Nxf5 Rae8 5.Ng5 Nd8 6.Be3 b4 7.Nh6 Rg7 8.Nhxf7+ Nxf7 9.Nxf7+ Kg8 10.Nh6+ Kh8 11.Bg5 Bxg5 12.hxg5 Ba6 13.Rf2 Nf8 14.Nf7+ Rxf7 15.Rxf7 (5.544.069.642) 1373
37 67:17 +0.13 2.Ng4 Rg8 3.Nh6 Rg7 4.Rae1 b4 5.Be3 Ba6 6.Bxa6 bxa3 7.bxa3 Qxa6 8.g4 Bxa3 9.Ng5 Rf8 10.Kh1 Bb4 11.Qe2 Qxe2 12.Rxe2 Bc3 13.gxf5 Nxd4 14.fxe6 fxe6 15.Ngf7+ (5.544.069.642) 1373
37 67:17 -0.35 2.h5 Rg8 3.Bxf5 Ncxe5 4.dxe5 d4 5.Qxd4 Bxf3 6.Qxd7 Bc5 7.Bh3 Bxe3 8.Qe7 Bxh5 9.Qf6+ Rg7 10.Rac1 Kg8 11.Rc3 Bxf2+ 12.Rxf2 Qd8 13.Rc5 h6 14.Kh2 Qxf6 15.Rxf6 (5.544.069.642) 1373
After this, the score drops again to below +1.00. So, is it just a draw?
Attack testposition for wild engines?
Moderators: hgm, Rebel, chrisw
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Eelco de Groot
- Posts: 4563
- Joined: Sun Mar 12, 2006 2:40 am
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Attack testposition for wild engines?
Debugging is twice as hard as writing the code in the first
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
place. Therefore, if you write the code as cleverly as possible, you
are, by definition, not smart enough to debug it.
-- Brian W. Kernighan
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zullil
- Posts: 6442
- Joined: Tue Jan 09, 2007 12:31 am
- Location: PA USA
- Full name: Louis Zulli
Re: Attack testposition for wild engines?
Hi Eelco,
Cfish-dev with 6-man tables:
0.00 1. Nxf5 exf5 2. Bxf5 Nf8 3. Qh6 Bc8 4. Bd3 Ra6 5. Qh5 Nd8 6. Be3 Qb7 7. Ng5 Bxg5 8. Bxg5 Rg6 9. Rf6 Qa7 10. Bxg6 fxg6 11. Qf3 Bf5 12. Qxd5 Nde6 13. Rf1 Nxg5 14. hxg5 Ne6 15. R1xf5 gxf5 16. Rxe6 Rxe6 17. Qxe6 Qxd4+ 18. Kh1 Qh4+ 19. Kg1 (depth 50, 0:23:37)
So looks like a draw.
Cfish-dev with 6-man tables:
0.00 1. Nxf5 exf5 2. Bxf5 Nf8 3. Qh6 Bc8 4. Bd3 Ra6 5. Qh5 Nd8 6. Be3 Qb7 7. Ng5 Bxg5 8. Bxg5 Rg6 9. Rf6 Qa7 10. Bxg6 fxg6 11. Qf3 Bf5 12. Qxd5 Nde6 13. Rf1 Nxg5 14. hxg5 Ne6 15. R1xf5 gxf5 16. Rxe6 Rxe6 17. Qxe6 Qxd4+ 18. Kh1 Qh4+ 19. Kg1 (depth 50, 0:23:37)
So looks like a draw.