1000 Expert Sudoku 1.0 1000 expert printable sudoku puzzles,Expert soduku puzzles need some advanced soduku strategies,Such as X-Wing,Squirmbag,Fishy Cycle| X-Cycle,XY-Chain.
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My SUDOKU 1.62, The Game From Endless Time In 1849, prominent mathematician Leonard Euler published his work «De quadratis magicis» («On magic squares»), describing properties and construction of «squares of digits» with special constraints for sum by rows and columns. In 1979, American architect Howard Garns published in Dell Magazines a puzzle called