Swallow (17×18) - Nonogram Online

Fill color

Black

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How to solve

1The numbers show the length of continuous blocks of filled cells.
2Between two blocks of the same color there is always at least one empty cell.
3The left mouse button fills a cell, the right one places a cross. On a phone a normal tap fills the cell.
4Mark the cells that are certainly empty with a cross, it makes the next move easier to find.
5Start with the largest numbers and with the intersections of rows and columns you have already filled.

Tip: if a number is larger than half the row, some cells in the middle can be filled right away.

Control buttons

Crossswitches to cross mode
Erasererases fills and crosses
Auto-Xfills finished lines for you
Brushdraw while holding the button
Hintreveals one cell, the badge shows how many are left
Zoom in and outchanges the cell size
Fullscreenhides everything except the board
Undosteps one move back
Savestores progress in the browser
Restartclears the whole board
Checkcompares the board with the solution

On a phone the toolbar is hidden: the gear at the bottom left opens every button, the palette at the bottom right handles color, cross and eraser.

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