Rechteck mit Löcher

great-puzzle
id = 86
status = timer expired
time = 00:30:00.3
unique solutions = 0
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 13:47:53 up 72 days, 19:58, 3 users, load average: 4.28, 4.70, 4.83