Picture logic puzzles with numbers
The numbers next to each row and above each column tell you the lengths of the blocks of filled squares in that line, in order. “3 1” means a block of three, then at least one gap, then a single square. Combine the row and column clues to work out every square – crossing out the ones you know are empty helps.
Every puzzle here is generated on the spot and checked by a solver to make sure it can be finished with logic alone. Choose 5×5 to learn, 10×10 for a coffee break or 15×15 for a real challenge. Drag to fill several squares, switch to cross mode on touch screens, check for mistakes, get a hint or print the puzzle.
How to use
- Read the clues: each number is a block of filled squares, in order, with gaps between.
- Tap a square to fill it; tap again to clear. Right-click or cross mode marks it as empty.
- Drag to fill or cross several squares at once.
- Clues turn grey when a line is complete. Fill everything correctly to win.
Ideas for using it
- Start with big numbers. a 7 in a 10-wide row always covers the middle squares.
- Zeros. a 0 means the whole line is empty.
- Beginners. 5×5 puzzles take a couple of minutes.
- Print. print a puzzle for a train ride or the classroom.