LOGIC · WORDS · PLACES PLAY IN YOUR BROWSER
LOGIC PUZZLES

Loop Trace

Connect neighboring dots into one closed loop. Learn with four short puzzles, then try 1,000 original boards and a daily challenge.

QUICK RULES · DEEPER PUZZLES
18,036 puzzles and codes
Change quick puzzle
NEW · 1,000 PUZZLES EACH

Loop Trace

Follow the clues. Close the loop.

Puzzle pack · Small loops · Change
New to Loop Trace?
Puzzle 1 / 1,0004 × 4 · 0 hints

Drag between dots. Match the numbers. Close one loop.

21222012232322

1 / 14 clues matched · 0 loose ends

Keyboard: arrows move · Shift + arrow draws/erases · L line · X note.

Check explains rule conflicts without revealing an answer. Each new check uses one hint.

Drag from a dot to draw. Retrace to undo; release to keep.

How to play · controls & tips

One loop. No branches.

Draw a single closed loop along the dotted edges. A number counts the lines around that square. Blank squares have no number restriction.

3 means three sides. 0 means none.

The loop may leave squares outside it. It does not need to visit every dot.

Drag to draw. Retrace to undo.

Start on a dot and drag through neighboring dots. Retrace before releasing to undo part of your stroke. Release to keep it; Undo removes the whole stroke. Start along an existing line to erase. Mark X works the same way for optional notes.

Prefer tapping? Tap a dot, then its neighbor. Repeat the same pair to erase. Both controls work with a mouse or touch.

Tab enters the board at your last focused dot; arrows move without marking. Shift + arrow draws or erases one edge and moves to its end. Press L for lines or X for notes. Each key press is one Undo step. Enter or Space selects two dots; Escape cancels selection. Tab again leaves the board. Mouse and touch controls are unchanged.

A matched number is not proof the whole loop is right. No branches, crossings or separate loops are allowed.

Every puzzle has one solution. Explain a move uses visible clues and dot rules, assuming your existing marks are correct. Reveal an edge consults the answer to clear an incorrect mark or add one correct line. Undo does not refund hints. No timer or lives.

No timer or lives. Switching puzzles starts a fresh board. Progress lasts while this puzzle stays open; it is not added to your account score. Daily puzzles change at 00:00 UTC.

LOGIC & WORD GAMESStart anywhere. Play at your own pace.✳
Rules & example: Loop Trace
  1. Draw one closed loop with no branches, crossings or separate loops.
  2. Each number counts the lines along its square’s four sides. Blank squares have no number restriction.
  3. Drag through neighboring dots to draw; retrace to undo. Start along an existing line to erase. Two taps and Mark X notes also work.

A quick example

A 3 needs three of its four sides drawn. A 0 needs none. Every dot on the loop connects exactly two lines.

Where to start

New here? Try Learn in 4 short puzzles to practice 0s, 3s, branches and separate loops. Lesson hints explain before changing an edge. All puzzles have a unique solution; Undo and Restart are available. Progress stays in the current page session.

More games to try

Play free in your browser. Pick a game to open its board and rules.

40 games

Privacy