Corrections

Every change to how puzzles are checked or graded, and every mistake we fix in a puzzle or a page, is listed here, newest last.

Log

1. 16 October 2026. Launch rules. Levels are set by the hardest technique our solver needs (tiers listed on each techniques page); every shipped puzzle is checked for a single solution by a separate counting program. Nonogram Expert also counts the forcing technique used on 10 or more lines. An archive page is indexed once 30 dailies are out.