challenging · rating 1771
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Black to move. Opponent's last move: Kb5.
advancedPawncrushingendgamepawnEndgamepromotionveryLong
1509 plays
7 plies in the line
Reveal line
Opponent's last move: Kb5
Solution: Kxa2 → Ka6 → b3 → c5 → b2 → c6 → b1=Q