Kropki Sudoku
Use the black and white dots between cells to work out consecutive and double-value pairs.
Play Kropki SudokuSapiver Puzzles
One place for the puzzles.
Choose from daily Sudoku variants, Trigoku and other Sapiver browser games. Pick a puzzle, use the variant rules and start solving.
Daily play
Sudoku variants & Trigoku
16 playable games
Hyper Sudoku
Classic Sudoku with four extra shaded regions that must also contain the digits 1 to 9.
Play Hyper SudokuAnti-King Sudoku
Solve the grid while making sure matching digits never touch diagonally like a king in chess.
Play Anti-King SudokuAnti-Knight Sudoku
Standard Sudoku with one extra rule: matching digits cannot be a knight's move apart.
Play Anti-Knight SudokuNon-Consecutive Sudoku
Orthogonally adjacent cells cannot contain consecutive numbers, adding another layer of deduction.
Play Non-Consecutive SudokuOdds and Evens Sudoku
Use the marked odd and even cells alongside the normal Sudoku rules to complete the grid.
Play Odds and Evens SudokuSudoku X
Both main diagonals must contain the digits 1 to 9 as well as every row, column and box.
Play Sudoku XArrow Sudoku
Each circled digit equals the total of the digits running along its arrow.
Play Arrow SudokuGerman Whispers Sudoku
Neighbouring digits along each whisper line must differ by at least five.
Play German Whispers SudokuKiller Sudoku
Use the cage totals together with standard Sudoku logic to place every digit.
Play Killer SudokuLittle Killer Sudoku
Outside clues give diagonal sums, combining Sudoku logic with arithmetic deduction.
Play Little Killer SudokuRenban Sudoku
Digits on each Renban line form a set of consecutive numbers in any order.
Play Renban SudokuSandwich Sudoku
Outside clues show the sum of the digits sitting between 1 and 9 in each row or column.
Play Sandwich SudokuThermo Sudoku
Digits increase along every thermometer from the bulb towards the tip.
Play Thermo SudokuXV Sudoku
Use the V and X clues between neighbouring cells to identify pairs that total 5 or 10.
Play XV SudokuTrigoku
A Sapiver number puzzle with a fresh daily challenge and a different route to the solution.
Play TrigokuMore Sapiver games
Other browser games
Sapiver Duel
Test your judgement in a quick timeline-based duel game.
Play Sapiver Duel