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Home * Evaluation * Patterns * Fianchetto

Fianchetto, (Italian: "little flank")
a pattern where a bishop is developed to the second rank of the adjacent knight file [1], the knight pawn having been moved typically one (regular fianchetto) or rarely two squares forward (long fianchetto). Especially when the fianchetto is part of king's defensive formation, a bonus is awarded to avoid an exchange especially versus a knight if the opponent still has an equal colored bishop, and in long term may take advantage of the holes and weak stop squares of the remaining pawn shield formation of a castled king.

The regular fianchetto pattern considers the knight pawn on the third rank defended at least by the bishop pawn (or simpler, defended by two pawns), with the bishop on the initial knight pawn square. Programs may evaluate fianchetto pattern implicitly by bishop piece-square tables, and bishop or piece controls of holes on the third rank in conjunction with pawn shield issues.

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