Rechteck mit Löcher

22.Problem
id = 141
time = 00:00:00.4
unique solutions = 0
using part
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 08:10:53 up 72 days, 14:21, 0 user, load average: 5.62, 5.26, 5.23