Lookouts

Rules

Divide the grid into regions of given sizes. Each number indicates the total number of cells within its region that can be seen horizontally or vertically from that cell, including the numbered cell itself. All numbers that are maximal within their region are given, and no other numbers are given.

(Rules and Example from WPC 2019 IB)

History of the puzzle

Invented by Roland Voigt (Germany) in 2013. First appeared on Hausigel Contest Series.

Appearances in the past WPCs

• WPC 2019/Round 5 by Roland Voigt
• WPC 2019/Team Playoffs (Knapp Daneben) by Roland Voigt