Each digit in the grid indicates the number of diamonds in its adjacent cells. No diamond is horizontally or vertically adjacent to another diamond, nor can any diamond occupy a numbered cell. Can you find all the diamonds? Two have been added to get you started.
| K | L | M | N | O | P | Q | R | S | T | |
A | 2 | | 1 | | | 2 | | | 1 | | |
B | | | | 2 | | | 2 | | | 1 | |
C | | 2 | | 1 | | 1 | | | 3 | | |
D | 1 | | | 2 | | | | 2 | ♦ | | |
E | | 2 | | | 2 | 1 | | | 2 | | |
F | 1 | | 2 | 1 | | | 2 | 1 | 2 | | |
G | | | | | | 3 | | | 2 | ♦ | |
H | | 2 | | 2 | | | | 3 | | | |
I | | 2 | | 3 | | 2 | | 2 | | 2 | |
J | 1 | | 1 | | | | | | | | |
Acknowledgement to Oscar A Nawa, whose helpful suggestions for making my original puzzle more challenging have been incorporated.