Rechteck mit Löcher

22.Problem
id = 141
time = 00:00:00.4
unique solutions = 0
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 11:12:33 up 75 days, 17:22, 0 user, load average: 4.56, 4.87, 4.87