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 | 12:56:39 up 68 days, 19:06, 0 user, load average: 5.81, 5.62, 5.51