Pair Bound

Pair Bound is a clean, colorful logic puzzle built around one simple idea: every piece needs exactly one partner.

Choose one square from each colored region, pair pieces by touching sides, and use row, column, and wall rules to eliminate impossible spaces. Each puzzle is designed to reward deduction instead of random guessing.

Start with simple boards that teach the rules naturally, then work through increasingly clever layouts with irregular regions, blocked sight lines, and multi-step logic.

Features:

Hundreds of handcrafted logic puzzles
Simple rules with deeper strategy
One piece per colored region
Every piece must have exactly one partner
Different pairs cannot share a clear row or column
Walls block sight and create new possibilities
Helpful hints based on real puzzle logic
Undo and X marks for planning
Three-heart mistake system
Quick puzzles designed for short or long play sessions
No forced ads during active puzzle solving
Optional rewarded ads for extra hints
Clean, colorful, mobile-friendly design
More puzzles and challenges planned

Pair Bound is easy to learn, but the best puzzles make you stop, scan the board, and find the one logical move that unlocks everything else.

Can you find every pair?