Slide the 2×2 window over the grid with the arrows (or the arrow keys once the grid has focus). The window wraps around the edges. Every position shows a different pattern: collect all 16.
1
1
0
1
0
0
0
1
1
0
0
0
1
0
1
1
Window
1
1
0
0
1100 = 12
row 1, column 1
The window starts at the top-left corner. Move it with the arrows.
Patterns found
1 / 16- 0000
- 0001
- 0010
- 0011
- 0100
- 0101
- 0110
- 0111
- 1000
- 1001
- 1010
- 1011
- 11001100
- 1101
- 1110
- 1111