Category Archives: Stuart

web site and Logic of Sudoku

Digit Forcing Chains?


Is Andrew Stuart’s Digit Forcing Chains a useful new solving technique? Actually, no.  Andrew’s  sudowiki site introduces digit forcing chains with examples that raise – and seem to settle – that question. Needless confusion is created by this unwarranted introduction. First, have you … Continue reading

Posted in Advanced Solving, Expert Reviews, Stuart, Uncategorized | Tagged , , , , , , | 2 Comments

Krakening a Finned Fish


Virginia, your mother tells me how your playground friends told you frightening tales about Harry Potter’s kraken monster  when you mentioned the kraken fish you saw at the aquarium.  You needn’t worry, dear.  There’s no such thing as a kraken … Continue reading

Posted in Advanced Solving, Expert Reviews, Stuart, Sudoku Toolware | Tagged , , , , , | 4 Comments