Number of solutions by position of X-piece:
 


12




4


 
 Total number of solutions: 16
 
1

3


2

3


3

3


4

3


5

6


6

6


7

4


8

4


9

4


10

4


11

4


12

4


13

3


14

3


15

5


16

5


 View all 16 solutions as a text file…
 View all 32 connections between the solutions as a text file…