Double-Hole Pin Cube Bonus Problem Solution
Exchange puzzle for International Puzzle Party 20
Los Angeles, August 2000
Rick Eason

This solution will put the Double-Hole Pin Cube in a 4x3x3 box. All holes are occupied by a pin. The following is the only solution (other than those which involve dropping a completed 3x3x3 cube in a 4x3x3 box). There is an additional "false" solution that does not assemble.
 
 

 
B
B
  
 
I
I
D
 
H
H
  
Top layer Bold-faced letters on light background indicate the “cell” where the pin is attached. One possible assembly sequence is A G F (B I) H (E C D).
G
B
C
  
G
I
C
D
 
F
H
D
Middle layer
G
A
C
  
A
A
E
E
F
F
E
  
Bottom layer

© 2000, Richard Eason

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