You’ll start level 133 with a 3×3 square ready on the right side, and sometimes a 2×2 square of the same color elsewhere on the board. Save those until you’ve used up better options for moves. It’s actually best served as a kind of “shuffle” option for your board.
The board flows from the bottom of the left column to the top of the right column, so you can use some strategic moves on the right to realign the left side of the board to make a square.
Focus on moves with the most numbers of ice breaks per move. (If squares can be completed, they usually are the best option.)
This isn’t a hard board, but you can’t sleep walk through it like a few other boards.