Alex Reed | SudokuPuzzle·Nov 2Naked triples: three short lists that clear five Sudoku notesA real puzzle shows why a triple can consist entirely of two-candidate cells.
Alex Reed | SudokuPuzzle·Nov 2XY-Wing: why seeing both ends is enoughTwo possible pivot values rule out the same 3 in real puzzle #542568.
smith jack·Nov 2A Sudoku Number Can Fit and Still Be WrongHow to turn a quiet interface, a pair of pencil marks, and one small deduction into a move you can explain.
Alex Reed | SudokuPuzzle·Oct 29X-Sums Sudoku: the first digit tells you how far to addUse the outside clues in puzzle #24917 to find six opening digits.
Alex Reed | SudokuPuzzle·Oct 25Claiming in Sudoku: how a row reserves a box’s 7Follow one digit from a row into a box, then remove it from two other cells.
Alex Reed | SudokuPuzzle·Oct 25Hidden pairs in Sudoku: finding two digits in crowded notesTwo cells with four candidates each can shrink to a pair when you check the whole row.
Tal Puzzles·Oct 25How to Choose Large Print Puzzles (and Print Them So They Stay Large)Disclosure: I’m Tal. I make and sell the large print puzzle PDFs mentioned near the end of this article. The puzzles themselves are…
Alex Reed | SudokuPuzzle·Oct 22Can You Find the Next Logical Move?One real Sudoku position, two optional hints, and a complete explanation you can test.
Alex Reed | SudokuPuzzle·Oct 22Naked Pairs: Two Cells, Two Digits, One Useful EliminationReserve two values without choosing their order, then simplify the rest of the row.
everysecondicanfind·Oct 22“Brain stacking” — helpful or harmful?After sitting down in my cold, plastic chair in sixth period AP Music Theory and adjusting my “desk” (which is actually just a music…
