Slant Puzzle Online

Slant is one of the classic one-player logic games in Simon Tatham's Portable Puzzle Collection. Draw a maze of slanting lines that matches the clues.

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Preparing the game board and controls.

What This Game Is

Slant is a self-contained logic puzzle built around one clear objective. Each new board gives you a fresh problem to solve, so it works well for quick sessions and repeated play.

Draw a maze of slanting lines that matches the clues.

How to Play

Left-clicking in a blank square will place a \ in it (a line leaning to the left, i.e. running from the top left of the square to the bottom right). Right-clicking in a blank square will place a / in it (leaning to the right, running from top right to bottom left). Continuing to click either button will cycle between the three possible square contents. Thus, if you left-click repeatedly in a blank square it will change from blank to \ to / back to blank, and if you right-click repeatedly the square will change from blank to / to \ back to blank. (Therefore, you can play the game entirely with one button if you need to.)

Most puzzles in this collection reward deduction more than speed. Focus on the most limited choices first, use the clues to narrow the board, and avoid guesses unless the puzzle mode clearly expects them.

Beginner Tips

  • Start with the area that has the strongest clue or the fewest legal options.
  • Use marks, notes, or temporary indicators if the puzzle supports them.
  • Try to preserve flexibility instead of committing too early when multiple moves look possible.
  • If the board gets messy, restart a fresh puzzle and apply what you learned from the first run.

Official Reference

If you want the full original rule explanation, examples, and advanced options, the official manual is the best reference.

Read the official manual

Frequently Asked Questions