Area Numbers

Rules

Place one number into every outlined region so that the number is equal to the area of the corresponding region. Numbers outside the grid indicate the sum of the numbers in the corresponding row or column.

(Rules and example from WPC 2016 IB)

History of the puzzle

Probably first appeared on the 9th 24-Hour Puzzle Championships (2009). Author of the puzzle was Pál Madarassy (Hungary).

Appearances in the past WPCs

• WPC 2016/Round 8 by Matúš Demiger