Thanks for playing! I’m sorry that you had problems with the explosion mechanic. When we tested the game, we were managing to get the big parts in 10 seconds. I would prepare your parts that you want to change for enemy’s parts on the ground near the enemy’s grid, then quickly insert enemy’s part in your grid, and try to quickly fill the empty cells in the enemy’s grid with the parts, that are lying on the ground. I think, you’ll get the hang of it, if you try a bit more! (But only if you want to)