One strategy for Cold Cuts level 2-5 is to freeze the top of the middle circle with the Ice bird. Send the Blue bird at a slightly higher trajectory, splitting through the frozen blocks. The gaps in the circular structure weaken it and gravity will force them to bounce. With a little luck — and time — the right circle may hit the TNT, shooting up, and wiping out the rest of the pigs. If this doesn’t work, try to hit the TNT with the Lazer Bird.