SHOOTING GAME BLOCKADE

Well, friends, let's shoot with a cannon? And then the inhabitants of the local hinterlands something raged. No, no, they are not violent, rather on the contrary, very organized, but these guys are determined. They don't seem to like the presence of your cannon in their dungeon at all. And these monsters, dressed up in armor and armor, are walking in orderly rows towards your weapon and obviously want to defeat it. The blockade, my friends! Well, your task is not to let them get too close.

Your cannon shoots colorful balls-cores. More precisely, there are only four colors. And each of the enemy's fighters has armor of exactly the same colors: red, green, black and white. If the cannon is aimed at an enemy in white armor, tap on the white core and the cannon will fire a white one. Aim for a green opponent? Click on the green core! As you can see, everything is elementary. But...

On the first level, the enemies go singly, one after the other. But on the second, already in a row of two. On the third — three, and on the fourth already four fighters in one row! And after several ranks, the enemies start to move faster. So, let's once again explain the algorithm for, say, the third stage of the game. A line of three fighters is coming at you: white, red, and green. The cannon looks at the far left, i.e. the white warrior. Click on the white, red, and green cores in a row. The cannon will automatically move to the next position after each shot. As a result, the entire line is destroyed. Immediately wait for another one and repeat the process. Good luck!