challenging · rating 1881
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White to move. Opponent's last move: O-O-O.
longmatemateIn3middlegamequeensideAttacksacrifice
1483 plays
5 plies in the line
Reveal line
Opponent's last move: O-O-O
Solution: Nb6+ → axb6 → Qa8+ → Nb8 → Qxb8#