The Knight's Mission

"The Knight's Mission" is a puzzle game that uses the movement of the knight on a chessboard.
*** How to play ***
First, select the size of the chessboard from 4x4, 6x6, 8x8.
Knight can move two squares vertically and one square horizontally, or two squares horizontally and one square vertically.
A yellow frame is displayed on the squares that the Knight can move.
Mission 1:
The square that Knight stepped on will change color.
Red square changes green, green square changes blue, and blue square changes red.
Match the colors of all squares.
It doesn't matter which color you match, red, green, or blue.
When the number of hearts runs out, the game is over.
Mission 2:
After completing Mission 1, a gate will appear on one of the squares.
The goal is to step on the square where the gate appears.
Hearts are restored each time you step on a square before entering the gate.
Once you step on the square, there will be a hole, and if you fall into the hole, the game is over.
When you reach the goal, you will return to mission1 and repeat missions 1 and 2.