NAND

When you click on 1, its neighboring
0's become 1's and 1's become 0's.
When you click on 0, its neighboring
0's (if any) become 1's.

Convert all 0's to 1's.

Like this puzzle? You may also like NOT!

4 x 4 5 x 5 6 x 6

Wrap around at the edges Include diagonal neighbors

Moves: 0

Best: N/A

Points: 10000

Best: N/A

1	0	1	0	1	1
0	0	1	1	1	0
0	0	0	0	0	1
0	1	0	0	0	0
0	1	1	0	1	0
0	0	1	1	1	1

Null move

Easy Normal Hard

If you don't get the rules right away, just click on a few 0s and 1s and the update pattern will become clear.

Try to solve the puzzle in as few moves and as quickly as possible.
If the game feels too easy or too hard for you, try changing the options above or try one of it sibling puzzles:
NOT, XOR, XNOR.