Author: pavel
Date: 18:51:51 08/02/02
This is a snippet of an Interview with Amir Ban, which will be officially released later this month, in the DigiChess Newsletter. http://www.digichess.gr/ Because of recent interest on this perticular move, I asked Amir to give us some info about this move. This is what he had to say: =============================================================================== I was away from the table when this move was played. The game was played by remote connection to this computer on which I'm writing (dual Athlon MP 1500+), but I can't find the log and I guess we forgot to save it. Analyzing with the Junior version that played, it doesn't consider anything else. See below. Shay says he thought himself of this move during the game, but didn't believe Junior would play it. Boris Alterman was at first doubtful of the sacrifice, but a move or two later told me Junior would win through a kingside attack (he meant black would attack e4 and the white king while white was busy protecting the queenside). Clearly Brutus did not put up the best defense. Junior itself shows below that white can return the material and remain at a slight disadvantage: 1...Rxc4 2.bxc4 b3 3.Nc1 Qxc4 4.Nxb3 Qxb3 5.Rxd7 Nxd7 6.Bxe7. Nevertheless Rxc4 is clearly the best move. The move is totally positional. There's no line to find here. Junior plays it not only to get a strong queenside attack, but also because the knight on c4 is too strong. Amir Brutus - Junior 7.24 r1r5/3nbpk1/4qnp1/4p1Bp/1pN1P3/1PP2Q2/4N1PP/3R1R1K b - - 0 1 Analysis by Deep Junior 7.24: 1...Nxe4 2.Bxe7 Rxc4 3.bxc4 = (0.03) Depth: 3 00:00:00 1...Rxc4 2.bxc4 Qxc4 = (-0.06) Depth: 3 00:00:00 1...Rxc4 2.bxc4 Qxc4 = (-0.06) Depth: 3 00:00:00 1...Rxc4! ³ (-0.36) Depth: 6 00:00:00 5kN 1...Rxc4! 2.bxc4 b3 3.c5 Nxc5 4.Bxf6+ ³ (-0.53) Depth: 6 00:00:00 9kN 1...Rxc4 2.bxc4 b3 3.Nf4 exf4 4.e5 Ra2 5.exf6+ Nxf6 6.Qxf4 b2 7.c5 ³ (-0.41) Depth: 9 00:00:00 101kN 1...Rxc4 2.bxc4 b3 3.Nc1 Qxc4 4.Nxb3 Qxb3 5.Rxd7 Nxd7 6.Bxe7 Ra6 7.Qd1 ³ (-0.34) Depth: 12 00:00:01 2204kN 1...Rxc4 2.bxc4 b3 3.Rd5 b2 4.Bxf6+ Nxf6 5.Rb5 Ba3 6.c5 Ng4 7.c6 = (-0.24) Depth: 15 00:00:16 31959kN 1...Rxc4 2.bxc4 b3 3.Rd5 b2 4.Bxf6+ Nxf6 5.Rb5 Ra2 6.Rb1 Ba3 7.Qd3 = (-0.15) Depth: 17 00:01:05 119392kN 1...Rxc4 2.bxc4 b3 3.Rd5 b2 4.Bxf6+ Nxf6 5.Rb5 Ra2 6.Rb1 Ba3 7.Qd3 = (-0.15) Depth: 18 00:03:29 372980kN 1...Rxc4 2.bxc4 b3 3.Nc1 Qxc4 4.Nd3 Qxc3 5.Rc1 Qd4 6.Rc7 Ra1 7.Rb7 Rxf1+ 8.Qxf1 Bc5 9.Nxc5 Qxc5 10.Rxb3 Nxe4 ³ (-0.35) Depth: 19 00:10:39 1151816kN 1...Rxc4 2.bxc4 b3 3.Nc1 Qxc4 4.Nd3 Qxc3 5.Rb1 Rb8 6.Bxf6+ Bxf6 7.Rfc1 Qa5 8.Qe3 Be7 9.Rc6 = (-0.24) Depth: 20 00:21:32 2265858kN 1...Rxc4 2.bxc4 b3 3.Rd5 b2 4.Bxf6+ Nxf6 5.Rb5 Ba3 6.c5 Ra6 7.Rd1 Rc6 8.Rd8 Rxc5 9.Rbb8 ³ (-0.39) Depth: 21 01:02:16 2371111kN (Ban, Ramat-Hasharon 02.08.2002) ================================================================================ cheers, pavs
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