SELECT
Congratulations!
00:00.00
Utility: Works for the entered candidate (even if it is wrong)
Color:
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Rules
❶Each row must contain all of the numbers 1 through 9 and no two numbers in the same row of a Sudoku puzzle can be the same.
❷Each column must contain all of the numbers 1 through 9 and no two numbers in the same column of a Sudoku puzzle can be the same.
❸Each block must contain all of the numbers 1 through 9 and no two numbers in the same block of a Sudoku puzzle can be the same.
Select a cell from the 9x9 puzzle, and enter a number using the number keypad or the memo number keypad.
By double-clicking on a cell, you can keep entering the same number you chose on the keypad. You can erase a number by entering that same number.
C: Clear the cell
UNDO: Go back one move
RESTART: Reset the puzzle
CHECK: Tells you if you have made a mistake
HINT: Shows you the next move
POSSIBLE CHOICES: Automatically sets the possible choices.
Lv.1-4:Single Candidate, Hidden Singles, Naked Pairs Triples, Hidden Pairs Triple, Naked Quads, Hidden Quads, Pointing Pairs, Box Line
Lv5:Singles Chains, X-wing, Y-wing, XYZ-wing, SwordFish
Lv6:X-cycles, BUG, XY-chain, 3D Medusa, Jellyfish, Unique Rectangles
Lv7:SK Loops, Extended Unique Rectangles, Hidden Unique Rectangles, WXYZ-wing, Aligned Pair Exclusion
Lv8:Hidden Unique Rectangles, WXYZ-wing, Aligned Pair Exclusion, exocet, Grouped X-cycles, Empty Rectangles, Finned X-wing, Finned SwordFish
Lv9:Empty Rectangles, Finned X-wing, Finned SwordFish, AIC (Alternating Inference Chains), Sue-de-coq, Digit Forcing Chains, Nishio Forcing Chains, Cell Forcing Chains, Unit Forcing Chains