Rechteck mit Löcher

22.Problem
id = 141
time = 00:00:00.3
unique solutions = 0
using part
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 02:04:05 up 66 days, 8:14, 0 user, load average: 5.75, 5.81, 5.54