
Designer  :  William Strijbos 
Craftsman  :  William Strijbos 
Category  :  PutTogether 
Pieces  :  15, plus the box 

AntiSlide was the second place winner at the 1994 Hikimi Puzzle Competition in Japan. The objective is to place the fifteen pieces into the box in such a way the none of them can slide in any direction. Each piece is 2X2X1 and the box is 4X4X4.
Bill Cutler analyzed the puzzle using his boxpacking program and found the following:
Pieces 
All Solutions
Not Counting Rotations & Reflections 
AntiSlide
Solutions 
15 
30,144 
21 
14 
379,372 
72 
13 
2,542,490 
1 
12 
9,911,900 
3 
One of seventytwo solutions with fourteen pieces is shown in the photograph. As you can imagine, this is no easy puzzle when you are using twelve or thirteen pieces. There are no solutions for less than twelve pieces.

