White to move
Black played 13...f5+. An en passant capture is White's only legal move. 14.exf6 and then the d-pawn advanced with checkmate. It was a memorable game with errors on both sides, but some interesting tactics that have instructive value.I followed this position with a couple from Roman Pelts and Lev Alburt, Comprehensive Chess Course, vols. I and II (1986). Then some mates in one culled from several sources. The student blazed through these very quickly. We then spent a couple of minutes on his successful effort to find the moves that had to be played to reach this position, which appears both in Ilya Maizelis, The Soviet Chess Primer (2014) and in Pelts and Alburt.
Black to move
I found two short games in the Lichess forums that were composed in answer to the question: what is the shortest possible game that ends via checkmate with an en passant capture? Both White and Black are able to checkmate in this manner on the sixth move.We finished with an endgame exercise and a mate in four that I composed an hour before the lesson.
White to move and win
White mates in four
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