Tag Archives: xyt-chains

Berthier’s xyt-chains in THLS


Next we review the introduction of xyt-chains in The Hidden Logic of Sudoku. These are modified XY-chains which allow extra candidates in the chain cells, and unlike regular XY-chains, make eliminations regardless of whether the chain starting candidate is true … Continue reading

Posted in Advanced Solving, Berthier, Extreme Solving | Tagged , , , , , , | 4 Comments