Killer Spiral is the 70th level in Chip's Challenge Level Pack 2. Since levelmaker Tyrethali Ansrath kindly pointed out that the level is in a spiral, the only difficulty is being smart enough to foresee the gliders and know where to wait. It appears that both gliders will leave the final slide at the same time, but the glider in the back bounces back, as it is [1/2] behind and the one in front does not have enough time to move out of the way. It is safe to step onto row 30 at 222.8, but Chip can be [1] late for 220.