J Tetromino Nonogram (15×15)
This is the J Tetromino nonogram — a 15×15 picture logic puzzle. Use the number clues beside each row and column to work out which squares are filled, and the picture appears as you go. Every square can be deduced; you never have to guess.
About this puzzle
- Size
- 15×15
- Difficulty
- Normal
- Filled squares
- 53 of 225
- Longest run
- 13
- Typical time
- 20-40 min
- Category
- Board Games
More puzzles like this
Need a hand?
How this board opens
This one opens itself. One sweep of the overlap rule — every row read against its clue lengths, then every column — is worth 201 of the 225 cells, 89% of the board, before you have deduced anything of your own. The most generous opening is row 1, which gives up 15 cells on its own. 8 of the 30 lines are decided outright by their clues, with no room to slide. From there the board finishes on row-and-column logic alone — there is no point where you have to try a cell both ways and see which one breaks. The finished picture fills 53 cells, and the longest unbroken run anywhere in the clues is 13.
About this category
Dice, pawns, chess pieces, playing cards — board games is a tighter, more consistent set than most of the catalog: ten of its thirteen puzzles sit right at 15×15, with only a couple of 10×15 boards and a single 10×10 on either side. That consistency is deliberate rather than a gap. Once you're comfortable with 15×15 solving here, every other puzzle in the category feels familiar rather than like starting over at a new difficulty tier each time.
See all →