Chess piece collision

About Game

Before the game starts：
 you and your opponent need to choose sports equipment as small pieces, and the party who completes the pairing of these sports equipment first wins.

Matching rules for sports equipment: 
The selected sports equipment needs to be paired with sports equipment of the same style but without coloring.

Rules for moving sports equipment:
The sports equipment can only move one step at a time;
You can move to adjacent slots or skip adjacent equipment to adjacent slots, but you cannot skip multiple equipment;
Each device can only move forward, left, or right, but cannot move backward.

The difficulty of the selected game determines the quantity of sports equipment.