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 | 08:20:35 up 75 days, 14:30, 0 user, load average: 5.50, 4.93, 4.86