7.2.1

Summary:
This puzzle consists of 6 pieces with 3 points to click, namely A,B and C.
Clicking one of these points rotates 4 pieces forming a diamond shape around them by 90 °.
→ [A] →

Solved states:

This puzzle has only one of these 3 solved states, depending on its original orientation.


Mathematical facts:

· The permutation group of pieces is the transitive subgroup of S6.
· Any piece can be at any of 6 places, and can be twisted by n×90°.
· The sum of twists is always (n×360°) =0°.
So the total number of possible scrambles is: (5!) ×(4^5) = 122,880.


Solution:
There are only 20,616(≅122,880÷6)solving-wise different scrambles.
Any scramble can be solved within 10 moves, and more than 90% of them, within 6~8 moves.
moves requirednumber
of scrambles
0 1
12
29
352
4261
51,237
64,548
79,047
85,098
9359
102
total20,616