Meh
This is either easy or impossible.
The gaps are easy to spot, but it depends on whether they are nearby.
Occasionally both gaps are on either side of the map, and there's no way you can reach them in time.
This game should have been based on how quickly you can respond, for example by increasing the speed of the player and reducing the period to find the gap with each successful attempt, as opposed to whether you're able to reach another gap in time.