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Learn Sudoku
Everything you need to go from your first grid to advanced pattern-spotting. These guides are free, and every technique here is one Samuraiku can teach you hands-on.
- How to Play SudokuThe one rule, your first move, and the beginner mistakes to skip.
- Samurai Sudoku: Rules & How to PlayFive overlapping grids, the shared-box rule, and how to solve the plus.
- Sudoku Solving TechniquesThe full ladder - naked singles up to Swordfish - and when to use each.
- The X-Wing TechniqueSpot the rectangle, eliminate down the columns. Step by step.