Author: Roy Eassa
Date: 12:50:27 12/06/02
Go up one level in this thread
On December 02, 2002 at 13:28:25, Steffen Basting wrote:
>Hi!
>How long do your engines need to find Nc6! with a huge white advantage (at least
>+2)?
>[D] kb2r1qr/pp3b2/1p2p3/1Pn1pp1n/R2N2pP/1PN1BPP1/4PQB1/R4K2 w - - 0 1
>
>Regards, Steffen
Nice position! A crusing win for White. Analysis, with Fritz:
1.Nc6! Nxg3+
[1...bxc6 2.Bxc5 Nxg3+
(2...gxf3 3.Bxf3 e4 4.Bxh5 Bxh5 5.Bxb6 Rh7 6.Bxa7 cxb5 7.Ra6 mates)
3.Qxg3
(3.Ke1 also wins, e.g. 3...Kb7 4.fxg4 e4
(4...Kc8 5.Rxa7!
(or 5.Bxc6 or 5.Bxb6)
5...Bxa7 6.Rxa7 Kb8 7.Bxb6)
5.Bd6! +-)
3...bxc5
(3...cxb5? 4.fxg4+ e4 5.Rxa7+ Bxa7 6.Qc7 bxc5 7.Rxa7#)
4.fxg4 Rc8 5.b6 forces mate]
[1...Nxa4 2.Nxa4 bxc6 3.bxc6 Bc7 4.Nxb6+ Kb8
(4...Bxb6 5.Bxb6 forces mate)
5.Nd7+ Kc8 6.Rxa7 Rd8 7.Ra8+ Bb8 8.Rxb8+ Kc7 9.Bb6+ Kxc6 10.Qc5+
(or 10.Nxe5+ Kb5 11.Bxd8+ Ka6 12.Qb6#)
10...Kxd7 11.Qc7+ Ke8 12.Rxd8#]
2.Ke1!
[or 2.Qxg3 Nxa4 3.Nxa4 bxc6 4.bxc6 +-]
2...Nxa4 3.Nxa4 bxc6 4.bxc6 Bc7
[4...Bd6 5.Nxb6+ Kb8 6.Nd7+ Kc7 7.Bb6+! Kxc6 8.Nxe5+! forces mate]
5.Nxb6+ Kb8 6.Nd7+ Kc8 7.Rxa7 forces mate
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