THE CASUAL CABINET · LOGIC PUZZLE
Cipher Sudoku
Goal Use 1–4 once in every row, column and small box.
Next move Choose an editable square, then a number below the board.
Score 0Device best 0
Ready when you are.
Complete a compact four-by-four lunar cipher.
How to play
Choose an empty square and a number. Every row, column and two-by-two box must contain 1, 2, 3 and 4 once.
Pause with P or Escape. Leaving the tab pauses the game. Scores and completions are saved only in this browser; clearing site data removes them. Casual games never spend or award Play Credits.