[next] [prev] [up] Date: Thu, 05 Jan 95 17:12:18 -0500
[next] [prev] [up] From: michael reid <mreid@ptc.com >
[next] ~~~ [up] Subject: kociemba's algorithm for quarter turns

for much too long now, i've meant to implement kociemba's algorithm
for quarter turns. finally i've gotten around to it, and it's found

   B3 L3 U3 L3 F1 U1 D1 L3 B1 U1 F1 R3 L1 F3 B2 U1 D1 F2 B2 R2 U1 D1   26q

it's interesting to note that david plummer gave a 28 quarter turn
maneuver for superflip on december 10, 1980. as far as i know, this
is the first improvement since then.

also found:

   B3 L2 U1 D1 R2 B3 D2 F2 D3 R2 F1 B1 L2 D3 B2 U2   24q

   U1 B3 U3 L3 F3 U3 B3 R3 D1 F3 D3 B3 U3 F3 L3 U1 F1 U1 D3 B2 U3   22q

more patterns to follow ...


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