A combination is a sequence of forced moves, often launched by a sacrifice, that chains together several tactical motifs (check, pin, fork, deflection…) to reach a concrete, verifiable result: material gain, checkmate, or a decisive advantage. What sets a combination apart from a simple good move is exactly that calculated chain from start to finish.

The three ingredients of a combination

Every combination rests on the same triptych: a starting motif (a poorly defended piece, an exposed king, a weak square), a series of forced moves that leave the opponent no way out, and a final objective clearly identified before the first move is even played. Without full calculation to the end, a sacrifice is just a gamble; with complete calculation, it’s a combination.

Example: a forced check opens the 7th rank

1.Rxe7+ Kf8, the only legal move: the knight on c6 defends the rook and covers the escape square d8. The 7th rank opens up for 2.Rxb7, winning the bishop.

White plays 1.Rxe7+: the king can’t recapture the rook (the knight on c6 defends it), and can’t go to d8 either (also covered by the knight). The bishop on b7, locked to its diagonals, can neither capture the rook nor block the check: 1…Kf8 is the only legal move. That leaves White’s rook on the 7th rank, free to reach the black bishop: 2.Rxb7 captures it for nothing. Every move in this sequence was calculated to force the next response, all the way to the final gain.

How to build your own combinations

Train yourself to first spot isolated motifs (forks, pins, removing the defender…), then chain them together mentally before playing the first move. Systematically check that every possible enemy reply doesn’t break your sequence: a combination that leaves the opponent a single unforeseen escape collapses entirely. Plenty of classic combinations take root as early as the openings, when a king left in the center or a poorly developed piece already provides the starting weakness.

Frequently asked questions

What’s the difference between a combination and a tactic?

A tactic is an isolated motif (fork, pin, skewer…). A combination assembles several of these motifs into a sequence of forced moves leading to a specific goal. Every combination uses tactics, but not every tactic is necessarily the starting point of a combination.

Does a combination always require a sacrifice?

No, but it’s very common, since sacrificing material is often the most effective way to force your opponent’s moves. Some combinations involve no sacrifice at all and rely purely on the precise move order.

How do I know if a combination is sound before playing it?

Calculate the sequence all the way through, considering at each step the opponent’s best possible defense, not just the most obvious reply. If the final result stays favorable even against the best defense, the combination is sound.