Author: John Merlino
Date: 13:09:16 10/31/02
Go up one level in this thread
On October 31, 2002 at 13:33:33, Bob Durrett wrote: >On October 31, 2002 at 13:18:01, Gian-Carlo Pascutto wrote: > >>On October 31, 2002 at 12:11:50, stuart taylor wrote: >> >>>What I'm really interested in is REAL genius. When I was younger, sacrifices >>>which are quite normal for me to imagine now, were then quite unbelievable. >>> But now, whenever I think something might be really great, a computer normally >>>shows it not too be sound. In fact, I haven't seen anything truly extraordinary >>>and unexpected for a long time. Perhaps I'm already familiar with all the >>>warning signs that one encounters in practical games, so things are not so >>>unbelievable-for me. >>> Didn't Tal have some things which no one else would have imagined? were they >>>sound? >>> But I mean REALLY unexpected! >>>S.Taylor >> >>[D]b2r3r/k4p1p/p2q1np1/NppP4/3p1Q2/P4PPB/1PP4P/1K1RR3 w - - 0 24 >> >>There are some warning sings here, but it would never even occur to >>me that Rxd4 is playable, let alone correct. >> >>I remember at that time the combination was considered unfindable. >>Nowadays Sjeng finds it in half a minute. >> >>-- >>GCP > >Before looking at your solution I had decided that Rxd4 was a good move [because >of later Re7+] but was somewhat disappointed that there was not a more >outrageous move available. > >Knowing that you're looking for a sac helps a lot! > >How about a position which does NOT involve a sac, but is still "REALLY >unexpected"? > >Bob D. Rxd4 might be the best move, but it doesn't look like Black has to take back. Chessmaster 9000, on a P4 2.66, says 24...Bxd5 with a slight edge for Black: Time Depth Score Positions Moves 0:00 1/3 -1.45 2059 24...cxd4 25.Qxd4+ Qb6 26.Re7+ Nd7 27.Rxd7+ Rxd7 28.Qxh8 Bxd5 0:00 1/4 -1.45 6782 24...cxd4 25.Qxd4+ Qb6 26.Re7+ Nd7 27.Rxd7+ Rxd7 28.Qxh8 Bxd5 0:00 1/5 -1.27 20277 24...cxd4 25.Qxd4+ Qb6 26.Re7+ Nd7 27.Rxd7+ Rxd7 28.Qxh8 Bxd5 29.Qc3 0:00 1/6 -1.74 55534 24...cxd4 25.Qxd4+ Qb6 26.Re7+ Nd7 27.Rxd7+ Rxd7 28.Qxh8 Rxd5 29.Qc3 Rd1+ 30.Ka2 0:00 1/7 -1.53 123449 24...cxd4 25.Qxd4+ Qb6 26.Re7+ Nd7 27.Nb3 Qxd4 28.Nxd4 Rhe8 29.Rxd7+ Rxd7 30.Bxd7 Re1+ 31.Ka2 Bxd5+ 32.b3 0:01 1/8 -1.49 327866 24...cxd4 25.Qxd4+ Qb6 26.Re7+ Nd7 27.Qc3 Qg1+ 28.Ka2 Bxd5+ 29.Nb3 f5 30.Qc7+ Ka8 31.Rxd7 Rxd7 32.Qxd7 Bxf3 33.Qd6 0:03 1/9 0.00 932290 24...cxd4 25.Re7+ Kb6 26.Qxd4+ Kxa5 27.b4+ Ka4 28.Qc3 Qxd5 29.Qc7 Qd1+ 30.Kb2 Qd4+ 31.Kb1 Qg1+ 32.Kb2 Qd4+ 0:06 1/9 -0.14 1657244 24...Bxd5 25.Qxd6 Rxd6 26.Rdd1 Kb6 27.Nb3 Rdd8 28.Bg2 Bxb3 29.cxb3 Rxd1+ 30.Rxd1 Re8 0:11 1/10 -0.18 3330145 24...Bxd5 25.Qxd6 Rxd6 26.Rdd1 Kb6 27.Nb3 Rdd8 28.Bg2 Rhe8 29.Rxe8 Rxe8 0:25 2/11 -0.13 7331102 24...Bxd5 25.Qxd6 Rxd6 26.Rdd1 Kb6 27.b4 cxb4 28.axb4 Rhd8 29.Rd3 Ba8 30.Rxd6+ Rxd6 31.Re7 Bxf3 32.Rxf7 1:04 3/12 -0.21 19444065 24...Bxd5 25.Qxd6 Rxd6 26.Rdd1 Rhd8 27.b4 c4 28.Re7+ Kb8 29.Kb2 Ng8 30.Re3 f5 31.c3 2:53 4/13 -0.13 53813453 24...Bxd5 25.Qxd6 Rxd6 26.Rdd1 Rhd8 27.b4 c4 28.Re7+ Ka8 29.Kb2 Bxf3 30.Rxd6 Rxd6 31.Rxf7 h6 32.Bc8 jm
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