Rechteck mit Löcher

70.Problem
id = 165
status = timer expired
time = 00:30:00.2
unique solutions = 0
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 18:53:42 up 74 days, 1:04, 0 user, load average: 4.67, 4.69, 4.69