"The Fifty Minute Block"

Well, ACTUALLY, first came the ten minute block.

(Ten Minute Block)

Then came the trial, beginning with four ten minute blocks. Forty minutes?

THEN came the answer with the fifth block added, for the new "Fifty Minute Block"!

This was an experiment inspired by the ten minute block. I wondered if four ten minute blocks could be used with another same sized block to make a ten minute block (fifty minute block) without obscuring the tilted centers of the smaller blocks. It does work one block out, like this.