Fuzuli

Rules

Place letters of the specified list into some cells, no more than one letter per cell, so that each letter appears exactly once in each row and column. No 2×2 group of cells can be entirely filled with letters.

(Rules and example from PGP IB)

History of the puzzle

Serkan Yürekli cites Cihan Altay (Turkey) as the inventor of this puzzle. A round in the 8th 24-Hour Puzzle Championship (2007) by Cihan had one; most likely this is the first appearance.

Appearances in the past WPCs

• WPC 2019/Round 7 by Ulrich Voigt
• WPC 2015/Round 3 by Vladimir Portugalov
• WPC 2014/Round 4