Author: Uri Blass
Date: 13:12:44 11/18/05
Go up one level in this thread
On November 18, 2005 at 15:57:51, Alessandro Scotti wrote: >Hi, >I've found this position in a old text file on my PC: > >[D]2r2rk1/1bpR1p2/1pq1pQp1/p3P2p/P1PR3P/5N2/2P2PPK/8 w - - 0 2 > >I think that Rg3 could be a strong move here, thanks to the Rg3-f4-g5-h6 threat. >However, it seems to be quite difficult to find for computers, so I wonder... is >Rg3 really a winning move? Kg3 is obvious winning move Here is analysis by Fruit after Kg3 As you can see black needs to sacrifice the queen to prevent mate. New game, [D]2r2rk1/1bpR1p2/1pq1pQp1/p3P2p/P1PR3P/5NK1/2P2PP1/8 b - - 0 1 Analysis by Fruit 2.2.1: 1...Qxa4 ³ (-0.37) Depth: 1/1 00:00:00 1...Qxa4 2.Kh2 Qxc2 ³ (-0.62) Depth: 2/12 00:00:00 1...Qxa4 2.Kh2 Qxc2 ³ (-0.62) Depth: 3/12 00:00:00 1...Qxa4 2.Ng5 Qxc2 3.Kh2 ³ (-0.58) Depth: 4/12 00:00:00 1...Qxa4 2.Ng5 Qxc2 3.Nxe6 Qc3+ 4.Rd3 Qxc4 5.Nxf8 Rxf8 ² (0.32) Depth: 5/16 00:00:00 1...Ra8 2.c3 Qxa4 3.Rxc7 Bxf3 4.Qxf3 = (0.03) Depth: 5/16 00:00:00 1...Rb8 2.Kh2 Rbc8 = (0.00) Depth: 5/16 00:00:00 1...Rb8 2.Kh2 Rbc8 = (0.00) Depth: 6/18 00:00:00 21kN 1...Rb8 2.c3 Rbe8 3.Kh2 Bc8 4.Re7 Rxe7 5.Qxe7 = (0.16) Depth: 7/24 00:00:00 54kN 1...Rce8 2.Kh2 Rc8 = (0.00) Depth: 7/24 00:00:00 77kN 1...Rce8 2.Kh2 Rc8 = (0.00) Depth: 8/24 00:00:00 109kN 1...Rce8 2.Kh2 Rc8 = (0.00) Depth: 9/24 00:00:01 158kN 1...Rce8 2.Kf4 b5 3.axb5 Qxd7 4.Rxd7 Bxf3 5.Kxf3 Rc8 6.Qe7 Rce8 7.Qc5 +- (7.48) Depth: 10/33 00:00:01 939kN 1...Ba8 2.c3 Bb7 3.Kh2 Rce8 4.Kg1 Bc8 5.Re7 Bb7 6.Rxe8 Rxe8 ² (0.33) Depth: 10/37 00:00:03 2927kN 1...Ba8 2.Kf4 Rce8 3.Kg5 Kh7 4.Rxf7+ Rxf7 5.Qxf7+ Kh8 6.Kh6 Qd7 7.Rxd7 Bxf3 8.Qxe8# +- (#7) Depth: 11/37 00:00:07 5422kN 1...Rce8 2.Kf4 Re7 3.Rxe7 Qc5 4.Rd8 Qxe7 5.Qxe7 Rxd8 6.Qxd8+ Kg7 7.Ng5 Bxg2 8.Qf6+ Kh6 9.Nxf7+ Kh7 10.Qxe6 +- (11.05) Depth: 11/37 00:00:08 6213kN 1...Kh7 2.Rxf7+ Rxf7 3.Qxf7+ Kh6 4.Rd7 Qxd7 5.Qxd7 Rh8 6.Ng5 Bc8 7.Qxc7 Ba6 8.Nf7+ Kg7 9.Nxh8+ Kxh8 10.Qxb6 Bxc4 11.Qxa5 +- (9.90) Depth: 11/47 00:00:11 9246kN 1...b5 2.axb5 Qxd7 3.Rxd7 Bxf3 4.Qxf3 a4 5.c5 Kg7 6.c4 Kg8 7.c6 Kg7 +- (7.44) Depth: 11/47 00:00:12 9557kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Bxf3 4.Qxf3 c5 5.Qf6 Ra8 6.Rd7 Rac8 7.Kf3 Ra8 +- (6.17) Depth: 11/47 00:00:12 10192kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Bxf3 4.Qxf3 c5 5.Qf6 Ra8 6.Rd7 Rac8 7.c3 Rc6 8.Qf3 +- (5.99) Depth: 12/47 00:00:13 10354kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Bxf3 4.Qxf3 c5 5.Qf6 Ra8 6.Rd7 Rac8 7.Kf4 Rb8 8.Ke4 Ra8 +- (6.20) Depth: 13/47 00:00:13 11000kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Bxf3 4.Qxf3 c6 5.Rb7 b5 6.axb5 cxb5 7.cxb5 Rxc2 8.b6 Rc5 9.Rd7 Rxe5 +- (6.44) Depth: 14/47 00:00:15 12524kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Rce8 4.Rxc7 Bxf3 5.Qxf3 Rb8 6.Rb7 Rbc8 7.Qf4 Rc6 8.Qd4 Kg7 9.Rxb6 Rxb6 10.Qxb6 +- (6.73) Depth: 15/47 00:00:21 18286kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Rce8 4.Rxc7 Bxf3 5.Qxf3 Rb8 6.Rb7 Rbc8 7.Qf4 Rb8 8.Re7 Rbc8 9.Rd7 Kg7 10.Qf6+ Kh6 11.Qg5+ Kh7 +- (6.72) Depth: 16/47 00:00:27 23157kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Rce8 4.Kf4 Rxe7 5.Kg5 Kh7 6.Qxe7 Rg8 7.Nd4 Bxa4 8.Nxe6 Be8 9.Nxc7 Bc6 10.Qxf7+ Rg7 +- (7.54) Depth: 17/47 00:00:39 33683kN 1...Qxd7 2.Rxd7 Bc6 3.Re7 Rce8 4.Kf4 Rxe7 5.Kg5 Kh7 6.Qxe7 Rg8 7.Nd4 Bxa4 8.Nxe6 Be8 9.Nxc7 Bc6 10.c5 bxc5 11.Qxf7+ Rg7 +- (7.32) Depth: 18/53 00:01:02 52777kN (, 18.11.2005)
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.