Solution
49… dxc4 50. ♝xa8 c3 51. ♝e4 fxe4 52. a6 c2 53. a7 c1=♛
The position
This advanced puzzle (rating 2195) asks Black to move to find the winning idea. It features these themes: Promotion.
It is Black to move. Look for the tactic hiding in the position — Promotion. Drag a piece on the board to play your move; the puzzle will tell you if you found the best continuation.
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