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 | 18:09:41 up 73 days, 19 min, 1 user, load average: 5.30, 5.36, 5.15