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Happy Thanksgiving from the Portal. The Gathering, a harvest cipher maze, is free to play until 30 November. Enter The Gathering

Universal Logic Grid

Dynamic Logic Puzzle Solver

Home / Tools / Universal Logic Grid

// Free logic puzzle

Put this grid to work on a real puzzle

Logic to Cipher Cascade opens with a deduction grid, then turns its answer into the key for two cipher stages. The grid and the cipher tools are built into the puzzle page.

Play Logic to Cipher Cascade now, no account → See all free puzzles

No sign-up needed to play. A free account adds points and the leaderboard. Want pure deduction? The Elite chain, Logic Nexus, is three grids: identity, time and space.

Create Custom Logic Grid

Build your own logic grid puzzle by filling in the form below:

Puzzle Title:

Row Labels (comma-separated):

Column Labels (comma-separated):

Clues (separate with | pipe character):

Instructions:

Enter a title for your puzzle
Add row and column labels separated by commas
Optionally add clues separated by the pipe character (|)
Click "Generate Grid" to create your custom logic puzzle
Share the URL with others to let them solve your puzzle!

Clues

How to Use:

Click cells to cycle through states: Empty → Check (✓) → Cross (✗) → Empty
Check (✓) marks a confirmed match between row and column
Cross (✗) eliminates impossible combinations
Your progress is automatically saved to this browser
Use the clues above to deduce the correct matches
Click "Share Puzzle" to get a URL you can send to others

×

Share This Grid

Copy this URL to share your puzzle:

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