- 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: C O L U M B U S.
D | K | ||
P | |||
E | T | ||
E | L | A |
Puzzle Copyright © Alan Stillson and Frank Longo