Lives
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Tap cells to fill, then Check
Tap cells to fill, then Check
Fill cells using number hints to reveal a hidden picture.
A 5×5 grid has number hints on each row and column. Each number tells you how many consecutive cells must be filled in that row or column. A row hint like "2 1" means two filled cells, then a gap, then one filled cell.
Tap a cell to fill it; tap again to clear. When you think you've matched the picture, tap CHECK.
You have 90 seconds. Solving a puzzle gives +1 score and loads the next one. A wrong CHECK costs one life (you start with 3). Game over when time runs out or lives hit 0.
Goal: solve as many puzzles as you can in 90 seconds.
Start where the numbers are biggest, because the most-filled lines leave the least freedom. On a 5×5 grid a clue of 5 fills the whole line instantly, and a 4 can only sit in two positions whose overlap is three guaranteed cells — that overlap technique is the heart of every nonogram. Mark those certain squares first and let them seed the rest.
The real engine is cross-referencing: a cell you prove filled from a row clue immediately constrains its column, and vice versa, so bounce between the two until the picture emerges. Resist tapping CHECK on a hunch, since a wrong check costs one of your three lives; only confirm when the grid is fully consistent with every hint. With ninety seconds across several puzzles, steady deduction that never wastes a life beats fast guessing that throws lives away.