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SudokuPower is your online sudoku resource.
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Solve puzzles by completing the grid so that all rows, columns and boxes contain the digits 1 to 9.
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To solve a sudoku puzzle: - Click an empty cell - Enter a number Until the puzzle is complete. Only valid numbers are accepted. The 'Level selector' is applied at clicking 'New puzzle' Clicking 'Hint' automatically fills one cell at random. Enter a ? (question mark) in a cell, to show/reveal the value for that specific cell. Click 'Verify' to highligh incorrectly entered cells. You can only get a hint when all entered cells are ok. Otherwise, incorrect cells are highlighted. Use 'Save puzzle' and 'Load puzzle' to save a puzzle in its current state and continue solving it at a later time. Please login to save and load your puzzles. You can save max. 15 puzzles. After that your oldest puzzle is deleted from your savelist. SudokuPower is provided 'as is', without warranty of any kind. Visits : 14045 Puzzles started : 6745
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Available levels.
Click a level, then see 'Solver methods' for level info.
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Solver method(s).
Required sudoku tactics for solving selected puzzle-level.
Apply basic constraints.
Find hidden singles.
Find candidates in row or column that intersect with subsquare.
Find hidden sets (e.g. double, triple) up to sets of 5.
Find naked sets (e.g. double, triple) up to sets of 5.
Find candidates in subsquare that intersect with row or column.
Find x-wing, swordfish, jelly-fish or squirmbag.
Find nishio
Find forced chains.
Guessing and backtracking.
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