Setup and opening position
All nine neighborhood clues are calculated from a unique deterministic black-and-white pattern, while each corresponding mosaic cell starts undecided.
Mosaic Puzzle
Complete every cell so all nine overlapping neighborhood counts agree exactly with the displayed clues.
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How to play
Complete every cell so all nine overlapping neighborhood counts agree exactly with the displayed clues.
- All nine neighborhood clues are calculated from a unique deterministic black-and-white pattern, while each corresponding mosaic cell starts undecided.
- Mark any cell filled or empty, or clear it. A clue counts filled cells no more than one row and one column away, clipped naturally at grid edges.
- Complete every cell so all nine overlapping neighborhood counts agree exactly with the displayed clues.
Strategy tips
- Begin with corner clues because their neighborhoods contain only four cells, then subtract confirmed filled cells from adjacent edge and center clue totals.
- Forgetting that a clue counts its own cell, or counting a cell two rows away, shifts several overlapping totals and makes otherwise sound deductions conflict.
- Use differences between neighboring clue totals to isolate the cells entering or leaving their neighborhoods, then verify every count after placing the final shade.
Complete guide
Rules, scoring, and strategy
Mosaic Puzzle is a complete browser implementation with its own versioned rules profile. Shade a three-by-three mosaic so each cell's clue equals the number of filled cells in its surrounding three-by-three neighborhood, including the clue cell itself.
Legal moves and game flow
Mark any cell filled or empty, or clear it. A clue counts filled cells no more than one row and one column away, clipped naturally at grid edges.
Winning and terminal positions
Complete every cell so all nine overlapping neighborhood counts agree exactly with the displayed clues. Use differences between neighboring clue totals to isolate the cells entering or leaving their neighborhoods, then verify every count after placing the final shade.
Practical strategy
Begin with corner clues because their neighborhoods contain only four cells, then subtract confirmed filled cells from adjacent edge and center clue totals. Forgetting that a clue counts its own cell, or counting a cell two rows away, shifts several overlapping totals and makes otherwise sound deductions conflict.
Questions players ask
What is the objective in Mosaic Puzzle?
Complete every cell so all nine overlapping neighborhood counts agree exactly with the displayed clues.
Which moves are legal in Mosaic Puzzle?
Mark any cell filled or empty, or clear it. A clue counts filled cells no more than one row and one column away, clipped naturally at grid edges.
What should I plan first in Mosaic Puzzle?
Begin with corner clues because their neighborhoods contain only four cells, then subtract confirmed filled cells from adjacent edge and center clue totals.