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 | 19:01:00 up 68 days, 1:11, 1 user, load average: 6.20, 5.97, 5.59