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 | 11:16:58 up 71 days, 17:27, 0 user, load average: 5.53, 5.39, 5.37