Author: Eelco de Groot
Date: 18:20:01 10/24/00
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On October 22, 2000 at 03:45:40, Paulo Soares wrote: >On October 22, 2000 at 00:54:48, Eelco de Groot wrote: >(snipped) > >> >>Last Move : 1... dxc3 (White to play) >> >>00:00 01.09 2.90 2.Bxf7+ Ke7 >>00:00 02.00 2.53 2.Bxf7+ Ke7 3.Bg5+ Nf6 4.Bxf6+ gxf6 >>00:01 03.00 0.03 2.Bxf7+ Ke7 3.Qb3 Qd3 4.bxc3 Qxe4+ >>00:02 04.00 1.17 2.Bxf7+ Ke7 3.Qb3 Qb6 4.Bxg8 Qxb3 5.Bxb3 >>00:06 05.00 0.71 2.Bxf7+ Ke7 3.Qb3 Qb6 4.Bxg8 Qxb3 5.Bxb3 cxb2 6.Bxb2 >>00:23 06.00 0.39 2.Bxf7+ Ke7 3.Qb3 Qb6 4.Bxg8 Qxb3 >>01:30 07.00 0.59 2.Bxf7+ Ke7 3.Qb3 Nf6 4.bxc3 Qa5 5.e5 >>06:32 08.00 0.59 2.Bxf7+ Ke7 3.Qb3 Qb6 4.Bxg8 Qxb3 5.Bxb3 cxb2 6.Bxb2 Bg4 >>11:40 09.00 0.87 2.Bxf7+ Ke7 3.Qb3 Qb6 4.Bxg8 Qxb3 5.Bxb3 cxb2 6.Bxb2 > > >You and Q5T did find an interesting move, Bxf7+!?. I think that white >won't get compensation for the piece, but I am not sure because there are many >lines in this position, blacks' king is not well positioned and the black pieces >are not developed. A small mistake in the analyses can be fatal, >let's see if somebody find a better move. > >Paulo > >[D]rnbqkbnr/pp3ppp/2p5/8/2ppP3/2N2N2/PP3PPP/R1BQKB1R w KQkq - 0 1 > >1. Bxc4 dxc3 2. Bxf7+ Ke7 3. Qb3 Nf6 4. e5 (4. O-O Qb6) 4... Ne4 5. bxc3 (5. >O-O Qb6) 5... Qb6 6. Bg5+ (6. Ba3+ Kd8 7. Rd1+ Kc7) 6... Nxg5 7. Nxg5 Na6 8. >Ne4 (8. Rd1 Qxb3 9. Bxb3 Nc5 10. Nf7 Nxb3 11. Nxh8 Nc5) 8... Qxb3 9. Bxb3 g6 * Hello Paulo, thanks for your good analysis. I had lot of fun trying to put any holes in it but couldn't really do it! Moves like 4. ..Ne4 and 5. ..Qb6 after 5.0-0 were not very easy to find or find answers to! This position after 1.Bxc4 is not just driving in the fog, more like being in a snowstorm, on a treacherous mountain path with a precipice on your right.. I don't think all computers would have found the refutations of 2.Bxf7+ if they didn't take enough time for it either but I don't think the sacrifice is *entirely* correct.. If ChessTiger only saw 10% of the variations when it decided not to take the pawn on c4 but instead the one on d4 with his Queen I would still be impressed. It would be interesting to see what happens if you force the moves 1. Bxc4 dxc3 2. Bxf7+ Ke7 3. Qb3 and what variations the programs come up with. Unfortunately I just hung up Explorer and had to reboot, lost a lot of the analysis in unsaved open files.. This variation was the best I could do to "repair" the sacrifice; after 1. Bxc4 dxc3 2. Bxf7+ Ke7 3. Qb3 Nf6 maybe the more correct way to fight on would be with 4.Ng5: 12.02 -0.11 4.Ng5 cxb2 5.Qxb2 Qb6 6.Qd2 Nxe4 7.Ba3+. At least that's what I had as best output before I unwisely decided to see what was happening here still having seven chess-engines running as well.. Minus .11 pawns but the situation is not very clear yet, to say the least. Into the swirling snow, trying to find a passage up the forbidding mountain, this is chess! Regards, Eelco http://www.thelordoftherings.org/multimedia/images/nasmith-01.html (Being something of a Tolkien-fan, I've got this calendar with Ted Nasmith's pictures, from 1992, still hanging on the wall because of the beautiful illustrations. This seemed a fitting image.)
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