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 | 20:53:49 up 72 days, 3:04, 0 user, load average: 4.48, 4.70, 4.77