HOW Many Digits in a 4x4 Sudoku?

Duration: 25:18 Published: Aug 25, 2026 Views: 13,194

Intro Music: Mozart's Sonata No. 16 - Lucy Audrin (Piano) Outro Music: Mark's Outro Music - Riffclown

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Contained Puzzles (1)

Links & Rules

Oops! All Twins

by Michael Lefkowitz

Variant Sudoku

Schrödinger Cells Digits 1-8 Sums

SudokuPad

View Puzzle Rules ↓

FULL SCHRÖDINGER - Place two digits from 1-8 in every cell so that each digit appears exactly once in every row, column, and 2x2 box. The smaller digit should go in the upper left, and the larger one in the lower right. A cell can take the value of either of its digits. A number on a diamond is a sum of the cells it separates. A number outside a row a column is a sum of that row or column.