This sheet prints light up puzzles #12 from the daily archive for Oct 10, 2026 (hard). Today's sheet is a 10 by 10 grid holding 29 walls, 13 of them numbered (including 5 zero walls); the solver must place exactly 21 bulbs so every white cell glows. Print it with your browser's print dialog (Ctrl/Cmd + P) and check yourself against the solution on the last page. Prefer to solve on screen instead? Play this puzzle online, or browse more printable light up puzzles from past days.
Method: on the big grids the beams run long, so bulb bans travel far. Track which segments already hold a bulb, and remember a cell with zero remaining light sources means an earlier placement was wrong. The full step-by-step method is in the how to play light up puzzles guide.
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Mark each bulb with a dot and cross out cells a bulb shines on; every white cell must end up lit, and no two bulbs may see each other.
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| 0 | 0 |