Learn how an intermediate forcing move can reverse the expected outcome of any exchange.
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White has just captured on f6. Black “should” recapture with Qxf6. But stop — does Black have an in-between move before recapturing? Always pause before automatic recaptures.
Instead of recapturing immediately, Black plays ...Bxf2+! (zwischenzug) — a check that forces White's king to move. Only then does Black recapture on f6. The intermediate check has changed the outcome of the whole sequence.
The zwischenzug must be forcing (check, capture of a major piece, or unstoppable threat). A non-forcing in-between move simply lets the opponent complete their plan. Always check: can the opponent ignore my intermediate move?
After the zwischenzug is resolved, the original exchange still happens — but in a changed position. A pawn might be placed differently, a piece displaced, or the king moved out of its preferred square. Small differences with large consequences.
Kingsights scans your games to find positions where an in-between move changed the outcome.
✓ Interactive boards ✓ Step-by-step ✓ Free forever