The following table gives the total number of solutions for the Superqueens problem for a N x N chess board with N queens. For a description of the Superqueens problem see Durango Bill's website.
| Rows x Columns |
Total Solutions |
Rectangular Boards with "R" Rows |
|
1 x 1
|
1
|
-
|
|
2 x 2
|
0
|
|
|
3 x 3
|
0
|
|
|
4 x 4
|
0
|
|
|
5 x 5
|
0
|
|
|
6 x 6
|
0
|
|
|
7 x 7
|
0
|
|
|
8 x 8
|
0
|
|
|
9 x 9
|
0
|
|
|
10 x 10
|
4
|
|
|
11 x 11
|
44
|
|
|
12 x 12
|
156
|
|
|
13 x 13
|
1876
|
|
|
14 x 14
|
5180
|
|
|
15 x 15
|
32156
|
|
|
16 x 16
|
202900
|
|
|
17 x 17
|
1330622
|
|
|
18 x 18
|
8924976
|
|
|
19 x 19
|
64492432
|
|
|
20 x 20
|
495864256
|
|
|
21 x 21
|
3977841852
|
|
|
22 x 22
|
34092182276
|
|
|
23 x 23
|
306819842212
|