Rechteck mit Löcher

70.Problem
id = 165
status = timer expired
time = 00:30:00.2
unique solutions = 0
select not used
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 12:10:10 up 72 days, 18:20, 3 users, load average: 5.14, 4.89, 4.93