Sudoku/ Fiendish catalogue

Sudoku No. 108

Fiendish0:00
3
1
4
5
6
9
7
1
4
8
2
1
5
6
9
4
2
9
2
4
3
5
8
9
4
1
2
9
←↑→↓ 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.