Are you sure you want to reset this puzzle?

SCORE:

All-time leaderboard

Monthly leaderboard

An Odd-Even Sudoku is a standard Sudoku grid, but the cells containing an even number will be shaded
grey.

This is an example of a completed Odd-Even Sudoku grid. You can see that all the cells containing
an even number are shaded in grey.

This is an example Odd-Even Sudoku starting grid. We can fill in the two highlighted cells. Let's
look at the top cell first. We can eliminate 1, 2, 5, 6, 7, 8, and 9 using the standard rules of
Sudoku, leaving us with 3 and 4. This cell is shaded grey, so this cell must be even, which
leaves us with just 4.

For the center cell, this cell isn't shaded which means this cell must be odd. We can eliminate
1, 2, 3, 6, 7, and 9, this leaves us with 4, 5, and 8. The only odd number remaining is 5, so this
cell must be a '5'.

This is another example of a starting grid for an odd-even Sudoku grid. You can use what you have just
learnt to fill in the highlighted cells.

Nonograms

Wordsearch

Nurikabe

Jigsaw Sudoku

Samurai Sudoku

Sudoku

Mathdoku

16×16 Giant Sudoku

Hitori

X-Sudoku

Kids Sudoku

12×12 Giant Sudoku

Hyper Sudoku

Futoshiki

Towers

Killer Sudoku

Greater Than Sudoku

Maze

Arrow Sudoku

Center-Dot Sudoku

Consecutive Sudoku

Odd-Even Sudoku

SudokuXV

Network

Minesweeper

Hashi

SlitherLink

TicTacToe

CellBlocks

Suguru

Kakuro

Train Tracks

Battleships

Masyu

Light Up

Shakashaka

Fillomino

Numberlink

Suko

SetSquare

Dominosa

Spiral Galaxy

Hidoku

Star Battle

Kakurasu

Ballsort

HexaBlocks

SquareBlocks

TriangleBlocks

Picross

Solitare

Pairs

Four in a row