War of Clash

Deep somewhere in the forest,a group of colorful stone balls are marching towards the hole where we put our treasure,the treasure was put in a secret place,however,those stone balls managed to find the right way there and they were following the track left by us to get there as quickly as they can.The air was full of tension,there must be a war to stop those stone balls from grabbing our treasures there.It's lucky that we have a cannon we could make use of to shoot at those colorful stone balls,and there's a magic trick,if you connect three or more stone balls with the same color,they will vanish like they never exist.Make use of this trick and win the war of clash!