3 ms·
There are about 490 million of them, the full list can be downloaded from that same cube20 site https://www.cube20.org/distance20s https://www.cube20.org/dista
by kevindamm 1y ago
There are about 490 million of them, the full list can be downloaded from that same cube20 site
https://www.cube20.org/distance20s https://www.cube20.org/distance20s
- BurningFrog 1y agoYou can trim it down by counting in quarter moves. That is, count a 180° move as two 90° moves. Which it is, though we usually don't think of it that way. Assuming a random move length distribution, that would only leave a (2/3)^20 fraction of them, which is about 147000 positions.
- kevindamm 1y agoThat page also shows their results for quarter turns, there are 3 (or fewer) with 26 quarter turns being the shortest they can be solved in. 36 (or fewer) needing 25 quarter-turns. https://www.cube20.org/qtm/ https://www.cube20.org/qtm/