Frog Nonogram (20×20)
This is the Frog nonogram — a 20×20 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.
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About this puzzle
- Size
- 20×20
- Difficulty
- Normal
- Filled squares
- 182 of 400
- Longest run
- 16
- Typical time
- 45-90 min
- Category
- Animals
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About this category
Animals is the widest size range in the whole catalog — a single 5×5 sketch, a scattering of 10×10 and 15×10 boards, and a run of larger 15×15 and 20×20 pieces for anyone who's outgrown the small stuff. That spread makes it the closest thing on the site to a proper learning path: start with the tiny one to get a feel for reading clues, work through the mid-size boards as your row/column cross-referencing improves, and finish on the 20×20s once 2×2 intersection reasoning stops feeling like a chore.
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