Symmetry logic puzzle — fill cells, match clues, mirror the grid
Each cell shows a number — that's how many of its 8 neighbors must be filled. Tap a cell to fill or clear it. Solve the puzzle by making every clue true AND keeping the grid point-symmetric (180° rotational symmetry).
⭐ Beginner (5×5) → ⭐⭐ Easy (7×7) → ⭐⭐⭐ Medium (10×10) → ⭐⭐⭐⭐ Hard (12×12) → ⭐⭐⭐⭐⭐ Expert (15×15)
SELECT LEVEL
L1
⏱0:00
LEVEL COMPLETE!
★★★
Solved in 0s
Click fillRight-click clearEnter checkR restartH hint
How To Play Sym-a-Pix
You get an N×N grid where every cell shows a clue (0–9). Each clue tells you how many of its 8 surrounding neighbors must be filled.
Click a cell to fill it (turn it on). Right-click or long-press to clear it.
Clue 0: all 8 neighbors must be empty (the cell itself can be either).
Clue 9: all 8 neighbors must be filled.
Cross-reference adjacent clues: if clue A says "3 filled" and clue B (overlapping 5 cells with A) says "5 filled", you can deduce which cells are uniquely determined.
The grid must be point-symmetric: cell (r,c) equals cell (N-1-r, N-1-c). Use this to halve your work!
The puzzle is solved when every clue matches AND the grid is symmetric.
Controls:
Click / tap — fill a cell.
Right-click / long-press — clear a cell.
Enter check your solution.
R restart the level.
H reveal one correct cell (3 hints per level).
Each puzzle has exactly one unique solution. Find it!