Grid Challenge Match

Easy to Play, Hard to Master.

The game has two modes.
The goal of normal mode is to make all squares green.
The goal of the challenge mode is to re-create a predefined pattern, as shown at the top of the challenge mode game window.

The operation is very simple, you can switch the color of the block and adjacent blocks by clicking on the block.
The difficulty of the game increases with the number of squares.

Hurry up to challenge.