Author: Roy Eassa
Date: 07:18:35 09/09/02
Go up one level in this thread
On September 08, 2002 at 20:55:06, José Carlos wrote:
>On September 08, 2002 at 20:52:33, Peter McKenzie wrote:
>
>>I tried this with Warp for are few minutes, it is happy with Re2 giving a score
>>of about +3 for black.
>>
>>When I play Ne3, the score is initially around half a pawn up for black, then
>>after a couple of minutes it jumps to nearly 2 pawns up for black.
>>
>>cheers,
>>Peter
>
> Try playing the variation until the end (the moves are forced, I think). In
>the end position, my program suddlenly goes to +5. When I undo the moves
>(permanent hash tables) now it wants to play Ne3.
Black can win with at least 3 different moves here: ...Nxf2, ...Ne3, and ...Re2.
1...Ne3
[also winning is 1...Nxf2 2.Bd5+ Qxd5 3.cxd5 Ne4+ 4.Qxc5 bxc5 5.Rxd3 Nd6
6.Rdf3 fxg5 7.Rxf5 Nxf5 8.Rxf5 Re1+ -+]
[or 1...Re2 2.Nh3
(2.Bd5+ Kf8 3.Nh3
(3.Nf7 Qe7 4.Nxd8 Bxf2+ 5.Rxf2 Re1+ 6.Rf1 Qe3+ mating)
3...Ne5 4.Ng5 h6 5.Rxe2 dxe2 6.Re1 hxg5 7.Rxe2 g4 -+)
2...Ne3 3.Nf4 Nxf1 4.Kxf1 Qe7 5.Nxe2 dxe2+ 6.Rxe2 Rd1+ -+]
2.fxe3
[2.Re1 Nxg2 3.Rxe8+ Rxe8 4.Kxg2 Qc6+ 5.Nf3 Re2 6.Rxe2 dxe2 7.Qd2 Bh3+
8.Kxh3 Qxf3 9.Qd8+ Kf7 10.Qd7+ Be7 11.Bc3 Qxc3 12.Qd5+ Kg6 13.Qe4+ f5 -+]
2...Bxe3+ 3.Kh1 Bxd2 4.Qxd2 Re2 5.Qd1
[5.Qc3 Qe7!
(or Tal's 5...Rxg2?! 6.Kxg2 Qc6+ 7.Kg1 Qc5+ 8.Kg2 Bg4 9.Bc1 fxg5 -/+)
6.Nf3 Rc2 7.Qe1 Qxe1 8.Rxe1 Rxb2 -+]
[5.Qc1 d2 6.Qd1 fxg5 7.Bf3
(7.Rxf5 Re1+ 8.Rf1 Rxd1 9.Rxd1 Qd3 -+)
(7.Qxe2 d1Q 8.Rxd1 Qxd1+ 9.Bf1 Bg4 10.Qxd1 Rxd1 11.Kg1 Bh3 -+)
7...Be4 8.Qxe2 d1Q 9.Rxd1 Bxf3+ 10.Qxf3 Qxd1+ 11.Qxd1 Rxd1+
12.Kg2 Rd2+ -+]
5...fxg5 6.Rxf5 Qe6 7.Re5 Rxe5 8.Bxe5 Qxe5 9.Bd5+ Rxd5 10.cxd5 Qe2 -+
This page took 0 seconds to execute
Last modified: Thu, 15 Apr 21 08:11:13 -0700
Current Computer Chess Club Forums at Talkchess. This site by Sean Mintz.