Sieve Shift

Sieve Shift is 15th stage of the game. It has 2 pickups in 3rd stage. It's tempo is 125 BPM, and is 4/4.

1st Stage
1st stage is easy if you know mechanics of the game. There is a sieve on which you need to go through. To get on second platform, stand on nearest vertical line (which is always safe). Move 1 time to the right per beat, but only if there's no block ahead of you. If you do this properly, you get into the next stage.

2nd Stage
2nd stage is also easy, if you know the pattern. The pattern is: 4 horizontal lines for 2 beats, 5 vertical lines for 2 beats. When horizontal lines appear, wait 2 beats, then jump 1 time to the left, 1 time down. Now lines changed. Go 2 times to the left, wait 2 beats/go 2 times up/down, 2 times to the left, wait/2 times up/down... When you're on last vertical line, go down/up 1 time, then 1 time left. Stage completed.

3rd Stage
3rd stage is moderate to new players. It has pattern: 3 vertical lines for 2 beats, 2 horizontal lines for 2 beats, 2 vertical lines for 2 beats, and 3 horizontal lines for 2 beats. When there's 3 horizontal lines, go on 1st block. Lines change. Go 2 times up/down. Lines change. 2 times right. 2 times up/down (go the same direction you went before [if you went up, go up again, if down, down again]). 2 times to the right, and you should get pickup if you went 2 times the same direction.

Now, 2 times down/up, 2 times to the right, 2 times down/up, 2 times to the left for 2nd pickup. 2 times down/up. 2 times to he left. 2 times down/up. 2 times to the right, and you should get 2nd pickup. 2 times up/down, 2 times to the right, 2 times up/down. And finally, 2 times to the right. Done. Level finished.

Trivia

 * Sieve Shift is 1 of 2 levels that have Beta Version of itself. Other one is Autobahn.
 * For some reason music in there is "Family". That's odd because music "Beta Sieve" is in game.