The brilliant chess move (37)

[Glarean]

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There's a new "Brilliant" in 'Glarean Magazin':

The Brilliant Chess Move #37 (Endgame)
http://glareanverlag.wordpress.com/2009 ... achzug-37/

You can download the PGN-, CBH- and EPD-files #1-37

Regards: Walter

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[kgburcham]

Gillam-Macintosh, CorrGame 1999

Brilliant 37

[d] 4r1k1/pp5p/2p1bR2/2P5/2B1n3/2B2K2/PP5P/8 w -

12/28 0:04 +0.52 1.Bxe6+ Rxe6 2.Rxe6 Ng5+ 3.Kg4 Nxe6 4.Bb4 Kf7 5.Kf5 Nd4+ 6.Ke4 Ne6 7.b3 Kf6 8.Bc3+
12/29 0:05 +0.52 1.Bxe6+ Rxe6 2.Rxe6 Ng5+ 3.Kg4 Nxe6 4.Bb4 Kf7 5.Kf5 Nd4+ 6.Ke4 Ne6 7.b3 Kf6 8.Bc3+
13/31 0:08 +0.60 1.Bxe6+ Rxe6 2.Rxe6 Ng5+ 3.Kg4 Nxe6 4.b4 Nc7 5.Kf5 Kf8 6.Ke5 Kf7 7.Be1 Ke7 8.Bd2 a6 9.Bg5+
13/33 0:14 +0.60 1.Bxe6+ Rxe6 2.Rxe6 Ng5+ 3.Kg4 Nxe6 4.b4 Nc7 5.Kf5 Kf8 6.Ke5 Kf7 7.Be1 Ke7 8.Bd2 a6 9.Bg5+
14/33 0:21 +0.60 1.Bxe6+ Rxe6 2.Rxe6 Ng5+ 3.Kg4 Nxe6 4.b4 Kf7 5.Kf5 a5 6.a3 axb4 7.axb4 Nc7 8.Ke5 Nd5
15/36 0:49 +0.62 1.Bxe6+ Rxe6 2.Rxe6 Ng5+ 3.Kg4 Nxe6 4.b4 Kf7 5.Kf5 a5 6.a3 axb4 7.axb4 Nc7 8.Bd2 Nd5 9.Ke5 Ke7
15/40 1:40 +2.20 1.Rxe6 Ng5+ 2.Kf4 Nxe6+ 3.Kf5 Kf7 4.Bf6 b5 5.cxb6 axb6 6.b4 b5 7.Bb3 Ra8 8.Bxe6+
16/42 2:20 +2.20 1.Rxe6 Ng5+ 2.Kf4 Nxe6+ 3.Kf5 Kf7 4.Bf6 b5 5.cxb6 axb6 6.b4 b5 7.Bb3 Ra8 8.Bxe6+
16/43 3:02 +2.20 1.Rxe6 Ng5+ 2.Kf4 Nxe6+ 3.Kf5 Kf7 4.Bf6 b5 5.cxb6 axb6 6.b4 b5 7.Bb3 Ra8 8.Bxe6+
17/53 5:04 +2.37 1.Rxe6 Ng5+ 2.Kf4 Nxe6+ 3.Kf5 Kf7 4.Bf6 b5 5.cxb6 axb6 6.b4 b5 7.Bb3 Ra8 8.Bxe6+ Ke8 9.h4 Ra4 10.h5 Ra3 11.Ke5 Rd3 12.Bf5 Rd5+ 13.Ke6 Kf8
17/53 7:28 +2.37 1.Rxe6 Ng5+ 2.Kf4 Nxe6+ 3.Kf5 Kf7 4.Bf6 b5 5.cxb6 axb6 6.b4 b5 7.Bb3 Ra8 8.Bxe6+ Ke8 9.h4 Ra4 10.h5 Ra3 11.Ke5 Rd3 12.Bf5 Rd5+ 13.Ke6 Kf8

[AdminX]

Following the advice of Edmund Moshammer and disabling Nullmove in Zappa Mexico II did allow Zappa to find it very fast on my Q6700

Analysis by Zappa Mexico II:

1.Bxe6+ Rxe6 2.Rxe6 Ng5+ 3.Kg4 Nxe6 4.Bb4 Kf7 5.Kf5 Ke7 6.b3 Nd4+ 7.Ke4 Ne6 8.h4 a5 9.Bxa5 Nxc5+
+/= (0.50) Depth: 9/23 00:00:02 591kN
+/= (0.46) Depth: 14/32 00:00:25 56576kN

1.Rxe6 Ng5+ 2.Kg4 Nxe6 3.Kf5 Kf7 4.Bf6 b5 5.cxb6 axb6 6.b4 b5 7.Bb3 Ra8 8.Bxe6+ Ke8 9.h4 Ra3 10.Bg8 Ra7 11.h5 Rd7 12.h6
+- (1.70) Depth: 14/39 00:00:40 94501kN
+- (2.23) Depth: 17/53 00:06:28 876mN

[Spock]

Following the advice of Edmund Moshammer and disabling Nullmove in Zappa Mexico II did allow Zappa to find it very fast on my Q6700

OK, but you would never have that disabled in normal game play would you ? What effect would that have ?

[Edmund]

Following the advice of Edmund Moshammer and disabling Nullmove in Zappa Mexico II did allow Zappa to find it very fast on my Q6700

OK, but you would never have that disabled in normal game play would you ? What effect would that have ?

You are definitely right. The solution would be a proper nullmove verification algorithm, that would help in all kinds of positions - not too much slowing down the average positions and still detecting all Zugzwangs in endgames

[mercury]

I think Bxe6 is also winning but it's longer
1. Bxe6+ Rxe6 2. Rxe6 Ng5+ 3. Kf4 Nxe6+ 4. Ke5 Nxc5 5. Kd6 Nd3 6. Kc7 b5 7. Kxc6 b4 8. Bd4 a6 9. Kb6 Kf7 10. Kxa6 Ke6 11. Kb5 Kd5 12. Bg7 h5 13.Bf6 Nc1 14. a4 bxa3 15. bxa3 Kd6 16. Kb6 Nd3 17. a4 Kd7 18. Bh4 Nb2 19. a5 Nc4+ 20. Kb5 Nd6+ 21. Kc5 Nb7+ 22. Kb6 Nd6 23. Bg3 Nc4+ 24. Kb5 Nxa5 25. Kxa5 1-0

[Glarean]

I think Bxe6 is also winning but it's longer
1. Bxe6+ Rxe6 2. Rxe6 Ng5+ 3. Kf4 Nxe6+ 4. Ke5 Nxc5 5. Kd6 Nd3 6. Kc7 b5 7. Kxc6 b4 8. Bd4 a6 9. Kb6 Kf7 10. Kxa6 Ke6 11. Kb5 Kd5 12. Bg7 h5 13.Bf6 Nc1 14. a4 bxa3 15. bxa3 Kd6 16. Kb6 Nd3 17. a4 Kd7 18. Bh4 Nb2 19. a5 Nc4+ 20. Kb5 Nd6+ 21. Kc5 Nb7+ 22. Kb6 Nd6 23. Bg3 Nc4+ 24. Kb5 Nxa5 25. Kxa5 1-0

Don't think so, there are many mistakes in your line.

Regards: Walter