Chess Spiral

A music concert of some delicate chess games from a special fixed position between the rather unknown new strong chess engine "DON" (about 3300 rating) playing Black against 4 of the strongest engines today.

The intro shows a special position were not a single modern engine can find the critical continuation Nc5-e4, followed by the Queen sacrifice Qc4xb4, at least not at Rapid play .. , the continuation leads to our start FEN 2rqr1k1/pp1bbp1p/4p1pB/4P3/1Q1pN3/P4N2/5PP1/3RR1K1 b - - 0 2 and from there i used 15 minutes per player, plus 5 seconds bonus each move. All 4 engines, in the order StockFish 13, Leela 0.26, CFish 12 and Komodo 13, can prove the Queen sacrifice is correct, but they must play very precise, otherwise DON will free itself.

At high depth White seems to be clearly winning after the Queen sacrifice, because Black has no good moves and is helpless, but calculating these winning variations is almost impossible .. the evaluation lies beyond the engines' horizon in a normal Rapid game.

music: several parts of Debussy
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