In these positions, a queen is sacrificed on c6. Black will be forced to recapture with ...bxc6. Then White mates with Ba6. The black king is trapped in a crossfire of the two bishops.
This was the original Boden game. R Schulder vs S Boden, 1853 (C41) Philidor Defense, 15 moves, 0-1
Also a "Double Rook Sacrifice." E Canal vs Horvath, 1934 (B01) Scandinavian, 13 moves, 1-0
2 games
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