🎨🧩Announcing the 'Tetromino Canvas Clash'🏆

Get ready for a month-long puzzle marathon like never before! From May 1st to May 30th, we're launching the 'Tetromino Canvas Clash' contest, where you'll face a new LITS puzzle challenge (classic and variations) every single day.
🌟 30 days, 30 puzzles - can you become the 'Tetromino Titan'?
💡 All puzzlers welcome! Join the fun and test your skills.🧩🏆

The puzzle below is a current daily puzzle. This puzzle is competitive - you have to register to solve it and participate in the daily competition. To register click Login link in the top right corner.

You can use the scores page to see the results of other competitors for this puzzle.

All the puzzles from the previous days are available at our archive page. Puzzles which are older than 5 days do not affect the score table and can be attempted without registration.

Dutch Snake

Author: Andrey Bogdanov

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Shade some cells black to create a snake of length 37 - a chain of blackened squares which doesn't touch itself even at a point. It should go straight through the cells with white circles and it should make turns in the cells with black circles. The begin and the end of the snake are not given and are subjects to determine.

Example puzzle

Grid control: Click the mouse button at the selected cell to change the color of the cell. Second click will put auxiliary cross sign, which doesn't affect correctness of the solution, but helps visually. You can also drag the content of one cell to another with the mouse. More details about grid control are at the help page.