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 | 17:10:35 up 72 days, 23:20, 1 user, load average: 5.83, 5.25, 5.17