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 | 05:58:44 up 67 days, 12:09, 0 user, load average: 5.66, 5.20, 5.27