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 | 14:26:53 up 73 days, 20:37, 0 user, load average: 5.08, 4.84, 4.76