Mate in 4 chess puzzles
Longer forced mates: every move is a check or a threat your opponent must answer.
These train calculation. Say each move to yourself and see the board after it before you go on; most mistakes come from losing track of a piece that moved.
8 real puzzles from games on Lichess, easiest first, rated 785 to 2626. The course has 643 mate in 4 puzzles in all.
Puzzle 1 · rated 785
Black just played f4. White to move.
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51. gxf4 h4 52. f5 h3 53. f6 h2 54. f7#
Puzzle 2 · rated 1428
White just played Kxa3. Black to move.
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26... Ra8+ 27. Ba6 Rxa6+ 28. Kb2 Ra2+ 29. Kb1 Nc3#
Puzzle 3 · rated 1714
Black just played Nf2. White to move.
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23. Rxh7+ Kxh7 24. f6+ Nxd3+ 25. Qxd3+ g6 26. Qh3#
Puzzle 4 · rated 1953
Black just played Kb8. White to move.
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24. Qxa7+ Kxa7 25. Ra1+ Qa3 26. Rxa3+ Kb8 27. Ra8#
Puzzle 5 · rated 2121
Black just played Rxg8. White to move.
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30. Rg1+ Kh8 31. Qh7+ Kxh7 32. Nf6+ Kh8 33. Rxg8#
Puzzle 6 · rated 2256
White just played Qxa8. Black to move.
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21... Bd6+ 22. Kg1 Bxc5+ 23. Re3 Bxe3+ 24. Kf1 Qf2#
Puzzle 7 · rated 2385
Black just played b6. White to move.
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29. Qxf7+ Kxf7 30. Bh5+ Kg8 31. Rxf8+ Kxf8 32. Re8#
Puzzle 8 · rated 2626
Black just played Rxd6. White to move.
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34. Qe4 Rxe4 35. Rb8+ Rd8 36. Rxd8+ Re8 37. Rxe8#
Free, no sign-up. Puzzles come in order of difficulty and the ladder adjusts to how you solve.
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Puzzles from the Lichess puzzle database (CC0). Every line was replayed move by move by the course's rules engine. Part of Chess Path, a free chess course. Free coach for your Chess.com and Lichess games.