Place letters into the grid such that every row, column, and 2 x 2 block has letters (in any order) that form a common word. Each letter is only used once, and no letter is repeated in the rows / cols / blocks.
Letters allowed: T U R K E Y
O
C
S
L
D
A
K
B
S
I
Note: this puzzle is not interactive, and the squares cannot be clicked.
Hint
The code has just four letters, A, B, C, and D. Each letter encodes 5 different letters.
Answer
I think, therefore I am.
Reasoning
A represents a, b, c, d, and e.
B represents f, g, h, i, and j.
C represents k, l, m, n, and o.
D represents p, q, r, s, and t.
E represents u, v, w, x, and y.
??
Puzzle 3
Can you find a five-digit number which is four times its reverse?