Rechteck mit Löcher

degenerated
id = 32
time = 00:00:00.3
unique solutions = 0
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 16:48:49 up 74 days, 22:59, 3 users, load average: 4.78, 4.88, 4.89