challenging · rating 1775
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Black to move. Opponent's last move: c5.
advancedPawncrushingendgamepromotionsacrificeveryLong
25 plays
7 plies in the line
Reveal line
Opponent's last move: c5
Solution: f3 → c6 → Rxb5+ → Kxb5 → f2 → Kb6 → f1=Q