This category is for sites about variations of traditional Sudoku. Such variations may include Word Doku (using letters that often spell words), deviations from the 9×9 grid with the 3×3 regions (for example: non-square regions, larger/smaller grids, combined boards, and so on) or any other variation.
10 Hardest Logic/Number Puzzles
A list of the hardest known puzzles for Sudoku and several Sudoku variants.
Dr. Gareth Moore's Puzzlemix
Site with many Sudoku variants, all playable online.
Fun With Puzzles
Contain lots of Sudoku as well as logical and fun puzzles. Also offers many online games.
Sudokus in many sizes from 6x6 to 100x100.
Generalizes Sudoku with varied boards, repeated symbols and full words inside the boards.
Custom Word Doku puzzles devised by Steve Schaefer. Features an entire sentence embedded into the puzzle.
Site with user-submitted puzzles, including Sudoku variants, crosswords, rebus, etc. Puzzles can be solved online for points. [English/Italiano]
Generates and solves classic and X-Sudoku problems. Diverse options and an integrated help facility.
Sudoku variant using sets of puzzles, with matching coloured regions in each puzzle having the same solution.
3D Sudoku program for Windows and Mac. Easy puzzles are free, others cost money.
Offers one puzzle each day, with a step-by-step solver.
Sidokus are musical sudokus, with musical notes instead of numbers and a hidden melody.
Sudo10 Sudoku variant
The usual rules of sudoku apply, but the board is an 8x8 board split into 8 triangular cells.
Site with many Sudoku variants not seen elsewhere.
A set of rules applicable to a regular Sudoku, that allows 2 to 5 players solve a single puzzle, and compete for points. [English/Français]
Two-player variant. Offers several board sizes to play against the computer. This site has many other Sudoku variations (e.g., Wordoku, 3D Sudoku, Calcudoku, Greater Than Sudoku, etc.) [English/Norsk]
Site with Sudoku and many variants, as well solvers, strategy explanations, etc.
Last update:October 25, 2016 at 12:25:12 UTC