Place ten copies of the L-Hexomino depicted below in an 8x8 square.
+--+--+--+--+
| | | | |
+--+--+--+--+
| |
+--+
| |
+--+
(In reply to
I'd like a hint by Jer)
.......X
.X......
........
........
........
........
......X.
X.......
The four X's in the grid are the non-covered squares.