Dorfman–Hellers 1990 — Calculate Before Recapturing

Objective: Black to move. Find the material-winning combination and maintain a -3.5 advantage for 3 moves.

Position and task condition

White has active heavy pieces, but the king is not completely safe. Black's knight can start a sequence of exchanges in which a single check makes all the difference. Calculate what actually remains on the board after three moves.

Josif Dorfman – Ferdinand Hellers · 1990 · Amsterdam, 1990

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