Rechteck mit Löcher

great-puzzle
id = 86
status = timer expired
time = 00:30:00.3
unique solutions = 0
select not used
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 12:25:55 up 72 days, 18:36, 3 users, load average: 5.55, 4.97, 4.88