OOOOO
OOOO O...
OOOO .O..
OOO OO.
OOO O.O
OOO O.. O..
OOO .O. .O.
OOO. ..OO
OO. .OO .O.
OO. .OO ..O
OO. .O. .OO
.O. OOO .O.
| possible 8×8 using 9 pieces (size of square is 7.6026×7.6026 = 17/sqrt(5)) |  |
Analysis and Copyright : ISHINO Keiichiro (2005).
| Piece# | Shape | 8×8 | 7×7 | 6×6 | Remark | |||||
|---|---|---|---|---|---|---|---|---|---|---|
| × | Sols | × | Sols | × | Sols | |||||
| 1 | OOOOO |
12 | 1 | 9 | 62 | 7 | 2 | |||
| 2 | OOOO O... |
12 | 5,934 | 9 | 892 | 7 | 2 | |||
| 3 | OOOO .O.. |
12 | 29 | 8 | 13,421 | 6 | 154 | |||
| 4 | OOO OO. |
12 | 954,280 | 9 | 43,759 | 7 | 18 | |||
| 5 | OOO O.O |
11 | 504 | 8 | 1,344 | 6 | 72 | |||
| 6 | OOO O.. O.. |
12 | 1 | 8 | 78 | 6 | 10 | |||
| 7 | OOO .O. .O. |
10 | 168 | 8 | 3 | 5 | 12 | |||
| 8 | OOO. ..OO |
12 | 1 | 8 | 2,758 | 6 | 21 | |||
| 9 | OO. .OO .O. |
11 | 1 | 8 | 82 | 5 | 118 | 11 F-Pentominoes | ||
| 10 | OO. .OO ..O |
12 | 1 | 8 | 113 | 6 | 13 | |||
| 11 | OO. .O. .OO |
10 | 149 | 7 | 210 | 5 | 27 | |||
| 12 | .O. OOO .O. |
8 | 7 | 6 | 1 |
|
||||