General
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Show timer
Shows the elapsed time for the current puzzle.
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Pausable personal timer
Pausable timer for relaxed solving. Your wall-clock time is still tracked for rankings.
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Show checkpoints
Save and restore board states. Useful for trying different solving paths.
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Compact controls
Hides the captions of the control buttons saving space on the screen.
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Momentum panning
Keep the board gliding after a quick flick of the finger.
Shikaku
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Show Pointer
Shows a pointer helper. Useful for bigger puzzles on touch screens.
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Left handed
Changes the pointer direction.
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Highlight errors
Marks in red wrong rectangles.
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Use blue color for errors
Helps color blind users to see the errors.
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Show cell counter
Shows a helper, counting the area of the drawn rectangle.
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Allow shrinking overlapping areas
New rectangles can be drawn over existing ones, shrinking them.
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Allow extending areas
New rectangles drawn from within existing ones will extend them.
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Two taps instead of drag to draw a rectangle
Tap one corner, then the opposite corner to form a rectangle — no dragging required.
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Classic view
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Highlight last change
Makes your last move more visible.
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Gray out completed rectangles
Automatically grays out rectangles that are correct.
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Color completed rectangles