Y by FaThEr-SqUiRrEl
Each cell of the board with
rows and
columns contains exactly one of the three letters
,
, and
in a way that satisfies each of the following conditions:
,
, and
appears exactly
times on every row.





- In total, each letter appears exactly
of times on the board.
- There are no two squares that share a common side and contain the same letter.
- Any
square contains all three letters
,
, and
.



