Author: Peter Kappler
Date: 14:02:04 08/03/99
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On August 03, 1999 at 14:29:47, James Robertson wrote: >On August 03, 1999 at 00:42:56, Peter Kappler wrote: > >>On August 02, 1999 at 22:56:11, Dann Corbit wrote: >> >>>I am pounding the stuffings out of this position, and will give the result in >>>the morning. >>> >>>In the end, it will still take a chess expert to decide who is telling the >>>truth. >> >> >>Both moves are winning. Rd8+ is certainly the simpler move, as it wins the >>queen immediately, but Qd3 is just as strong, forcing Black to give up the queen >>to avoid mate. >> >>After Qd3, the immediate threat is Qd8 mate. If Black stops this with Be7, >>White just mates with Qd7+ Kf8 Qc8+ Bd8 Rxd8+ Qe8 Rxe8 mate. If Black plays Kf8 >>then Re2 threatens both the queen on e2 and a mate on d8. >> >>This position is not a slam dunk for White, and he still needs to play very well >>to win. (Q+4pawns vs R+B+4pawns is not a piece of cake...) For this reason, I >>prefer Rd8+, since it forces the Black king to a more exposed square. >> >>Still, the suite should be modified to list both Rd8+ and Qd3 as solutions. >> >>--Peter > >My program and Crafty 16.11 think black's best reply to Qd3 is f5. I know my >program likes this because it thinks black is even more exposed than on d8. What >is your opinion? > >James Hi James, I didn't mention f5, since it loses the Queen directly to Re2+, but it's probably at least as good as Kf8. One advantage of moving the f-pawn is that it allows Black's rook to move along the 2nd rank. I don't have the position in front of me, but I think f6 is perfectly playable, too. (And to answer your original question, I think the King is most exposed on d8.) Nice work, by the way - it's not every day that somebody finds a new solution to a WAC position! --Peter
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