Monday, February 14, 2022

Solution to Purdy Problem

For the discussion of this position see HERE. Games
1...d5 This assures that white can't carry out his threat to win the Q because of Boden's Mate. It's also the only move black has that does not lead to an inferior position. It's also interesting that in the initial position Stockfish says black is better by about a P and a half. 2.g5 2.d4 This is the best. Even though white loses the B his position is not totally without counterplay, but in the end, his lead in development and space is not sufficient compensation. dxc4 3.b5 c8 4.e4 c5 5.xc7 5.xc7+ xc7 6.xc7 xf2 7.e5 f5 8.e4 xg3 9.d6+ black is winning after f8 10.xf5 xe1 11.d6+ e8 12.xg7+ d8 13.xe1 Black still has an extra piece. 5...e7 6.f3 0-0 7.xd7 c6 8.xe7 xe7 9.fd4 d7 10.d6 fd8 11.xe7 xe7 Black is up the exchange. 2...xc3+ 3.bxc3 a3# 0–1

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