Chess Bishop Nonogram (15×15)
This is the Chess Bishop 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
- 62 of 225
- Longest run
- 9
- Typical time
- 20-40 min
- Category
- Board Games
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How this board opens
A first sweep of the overlap rule down the rows and across the columns settles 112 of the 225 cells, about 50%, which is enough of a skeleton to work outwards from. The most generous opening is column 1, which gives up 15 cells on its own. 6 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 62 cells, and the longest unbroken run anywhere in the clues is 9.
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.
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