🧩 13 Dual-Mode Solvers & Playable Puzzles • 100% Client-Side
Grid & Logic Puzzle Studio
Solve any puzzle with instant backtracking and constraint deduction, or switch to Play Mode for generated challenges, timers, and pencil marks.
Sudoku Solver & Interactive Game
Enter custom digits or generate a fresh puzzle with verified unique solution.
Ready
💡 Tip: In Solver Mode, type numbers into any cell and click Solve Instantly. In Play Mode, invalid moves and duplicates will be flagged in real time.
Killer Sudoku Cage Sum Solver
Calculate candidate combinations, sum partitions without duplicate digits, and cage constraint exclusions.
Nonogram / Picross Solver & Game
Enter row & column numbers to deduce the pixel art, or solve interactively.
Lights Out Solver & GF(2) Matrix Engine
Click tiles to toggle lights and neighbors, or calculate the exact minimal click solution.
Moves Taken: 0 | Status: Active
Matchstick & 7-Segment Equation Solver
Enter an incorrect matchstick equation (e.g. 6 + 4 = 4 or 8 - 2 = 9) to calculate all valid single or double match moves.