Triplets (a.k.a Triples) and Hidden Triplets Explained - A Sudoku Strategy You MUST Know
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Hidden pairs - a Sudoku technique for beginners
Lots of TRIPLES! Useful Sudoku Strategy - Great for Beginners to Know
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#sudokunyt 2024 01 11 hard - a lot of hidden triples here
#sudokunyt 2024 01 14 hard - a lot of hidden triples to find
