Setup and opening position
The nine cells show side counts and the twenty-four grid edges begin undecided. Each edge can be marked as part of the loop or excluded; the seeded presentation shuffles the decision order without changing the puzzle.
Loop Puzzle
Classify every edge so the clues are exact and the selected edges form the puzzle's single solver-verified loop.
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How to play
Classify every edge so the clues are exact and the selected edges form the puzzle's single solver-verified loop.
- The nine cells show side counts and the twenty-four grid edges begin undecided. Each edge can be marked as part of the loop or excluded; the seeded presentation shuffles the decision order without changing the puzzle.
- A cell's clue is the exact number of its four sides used by the loop. Every touched grid vertex must have degree two, and all selected edges must belong to one connected cycle rather than several smaller loops.
- Classify every edge so the clues are exact and the selected edges form the puzzle's single solver-verified loop.
Strategy tips
- Start with corner clues, where only two sides are available, then propagate degree-two decisions from vertices that already have two selected or two excluded incident edges.
- Matching every numeric clue is not sufficient if the selected edges split into disconnected cycles or leave a vertex with only one line.
- Before closing the final gap, trace the entire route once; closing a short local circuit can isolate the remaining selected edges outside it.
Complete guide
Rules, scoring, and strategy
Loop Puzzle is a complete browser implementation with its own versioned rules profile. Draw one closed loop around a 3×3 field while satisfying the number printed in every cell.
Legal moves and game flow
A cell's clue is the exact number of its four sides used by the loop. Every touched grid vertex must have degree two, and all selected edges must belong to one connected cycle rather than several smaller loops.
Winning and terminal positions
Classify every edge so the clues are exact and the selected edges form the puzzle's single solver-verified loop. Before closing the final gap, trace the entire route once; closing a short local circuit can isolate the remaining selected edges outside it.
Practical strategy
Start with corner clues, where only two sides are available, then propagate degree-two decisions from vertices that already have two selected or two excluded incident edges. Matching every numeric clue is not sufficient if the selected edges split into disconnected cycles or leave a vertex with only one line.
Questions players ask
What is the objective in Loop Puzzle?
Classify every edge so the clues are exact and the selected edges form the puzzle's single solver-verified loop.
Which moves are legal in Loop Puzzle?
A cell's clue is the exact number of its four sides used by the loop. Every touched grid vertex must have degree two, and all selected edges must belong to one connected cycle rather than several smaller loops.
What should I plan first in Loop Puzzle?
Start with corner clues, where only two sides are available, then propagate degree-two decisions from vertices that already have two selected or two excluded incident edges.