CHESSIGMA
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Basic tactics

Forks, pins and loose pieces — the three motifs that decide most games under 1600. Two of the five finish with mate.

This set is part of a subscription

The mating patterns set is free and works the same way — all 3 rounds, no limit on how often you run it.

How this set is scored

You solve all 5 puzzles, then solve the same 5 again, 3 times in total. Each round is timed from its first puzzle to its last, and the timer does not pause.

At the end you get the three round times side by side. The percentage is how much faster the last round was than the first — which is the closest thing to a measurement of whether the patterns have actually stuck. Using “show me” on a puzzle does not count it as solved.