This is the past version of Cold Cuts 2-10 (Angry Birds Space)
It's hard to through the fortress.
For Cold Cuts 2-10, the level can be cleared with only the Lazer bird. Send it over the main structure, then redirect it downward through the snowball. You should aim this redirection such that the Lazer bird will break the vertical wooden block below the snowball as well, causing the entire structure to fall.