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 | 15:01:54 up 73 days, 21:12, 0 user, load average: 5.04, 4.88, 4.79