One Way Puzzle

The rule is extremely simple.
Just fill in all of the blocks using only one line.

Use hints for puzzles that are too hard to clear.
Hints are also free, as your see.

4 levels of difficulty.
A whopping 2,000 puzzles.
The puzzles get harder as you go along.

One-line puzzles are mathematical problems with origins in the early 18th century. First posed in Königsberg, the original puzzle revolved around the town’s Pregel River.

Mathematical thinking is said to increase work efficiency and prevent aging.
Whether math is your bane or your forte, be sure to give this game a try.
You’re sure to get hooked on these puzzles!