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Penjelasan
Sebuah mat tiga langkah adalah yang harus diselesaikan Putih dalam paling banyak tiga langkah Putih melawan setiap pertahanan Hitam. Dalam jalur yang memakai seluruh batas, urutannya adalah Putih, Hitam, Putih, Hitam, lalu Putih memberikan mat.
Langkah pertama harus menjamin sasaran terhadap semua jawaban sah. Langkah tambahan Putih memungkinkan manuver persiapan yang tidak muat dalam , misalnya mengubah koordinasi buah sebelum mat terakhir. Ini memberi komponis ruang lebih luas untuk gagasan strategis, walaupun mat tiga langkah tidak otomatis lebih sulit dipecahkan.
Notasi yang lazim adalah #3. Jika batasnya empat langkah Putih atau lebih, problem itu masuk kategori .
Kebingungan umum
Tiga gerakan total
Angka tiga dalam #3 menghitung langkah Putih. Jika pertahanan memakai seluruh panjang jalur, terdapat pula dua langkah Hitam di antaranya.
Sumber
- 1.Glossary of Chess Problem Terms, OzProblems
- 2.Codex of Chess Compositions, World Federation for Chess Composition (WFCC)
- 3.Estipulaciones y varios, Unión Argentina de Problemistas de Ajedrez