Message #1925

From: Andrey <andreyastrelin@yahoo.com>
Subject: 24-cell solved
Date: Wed, 16 Nov 2011 00:46:34 -0000

Finally I’ve got some time to work on 24-cell. Solve was easy enough until the last step (6C pieces) where I discovered that my ideas of moving them don’t work: I can’t find easy operations that move 6C and don’t move sub-corners. But it happened that my operations for moving sub-corners don’t move corners! So I returned to the start of sub-corner positioning step and started to work on 6C instead.
Total twist count (after optimization) is 21137. Half of them (10606) was spent on first 4 steps, and second half - on last two. The longest operation (3-cycle of 6C) was 139 twists long.
And I was lucky that I didn’t meet parity problem at the end of 3C pieces stage: elementary twist of the cell gives even permutation of central 2C, but odd permutations of 3C and 6C. So it’s possible that you’ll need to re-solve eight 2C pieces when you think that you’ve done with them long time ago :)

Andrey