Sudoku Custom

The Sudoku app that teaches you how to think

Sudoku Custom launched on March 10, 2026.

Visit sudokucustom.com ↗Sudoku Custom alternatives

What it does

Free Sudoku solver: 30+ technique tutorials with step-by-step demos, tens of thousands of puzzles (7 difficulty levels), photo recognition (high accuracy, fast scan), powerful solver (solves world's hardest Sudoku), global leaderboard, specialized training, customizable theme & board. Learn X-Wing, Swordfish, ALS, Forcing Chains.

Free Sudoku solver: 30+ technique tutorials with step-by-step demos, tens of thousands of puzzles (7 difficulty levels), photo recognition (high accuracy, fast scan), powerful solver (solves world

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