Rechteck mit Löcher

22.Problem
id = 141
time = 00:00:00.4
unique solutions = 0
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 02:30:35 up 75 days, 8:40, 0 user, load average: 5.49, 5.10, 5.01