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Sudoku/ Moderate catalogue

Sudoku No. 77

Moderate0:00
6
1
7
5
2
8
1
3
6
7
4
6
8
9
8
1
2
7
7
9
8
9
3
6
5
6
9
2
←↑→↓ move, 1–9 enter, Shift+digit or N for notes, ⌫ erase, Ctrl+Z undo.

How to play Sudoku

  • Fill every empty square with a digit from 1 to 9.
  • Each row, each column and each of the nine 3×3 boxes contains every digit exactly once.
  • The printed digits are fixed. Every puzzle has one solution and never needs a guess.

←↑→↓ move, 1–9 enter, Shift+digit or N for notes, ⌫ erase, Ctrl+Z undo.

Hints explain one step from your current board. Reveal fills in what a hint proved and is counted separately.