DWG-103.4.04
Nonogram #4 · Expert
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About this puzzle
A 20×20 picture with 236 of its 400 cells filled (59%). The clues contain 148 blocks in total, and every one of them can be placed by line logic alone.
Before you mark anything, the overlap rule already settles cells in 17 of the 40 lines.
The longest block is 15 cells long; the busiest line holds 7 separate blocks.
Where to start
The best opening is column 1 (clue 4 5 8): on its own it fixes 14 of its 20 cells.
On 20×20, keep a rhythm — overlap, edges, crosses — and revisit a busy line only after its neighbours have changed.