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 | 09:47:18 up 73 days, 15:57, 0 user, load average: 4.45, 4.60, 4.70