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This map shows the most used squares (meaning there was a pawn or a piece on the square) over all recorded games of a selected chess grandmaster. Blue intensity is at maximum for the most used square over the selected range of moves; other square intensities are displayed proportionally. Opening positions dominate positions which happen later in games, because they are diluted into combinatorial explosion. Slide the "Min move" cursor to the right to see how positions evolve throughout games.