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 | 19:31:16 up 76 days, 1:41, 2 users, load average: 5.11, 4.85, 4.86