Rechteck mit Löcher

22.Problem
id = 141
time = 00:00:00.3
unique solutions = 0
using part
animate    
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Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 07:35:31 up 66 days, 13:45, 0 user, load average: 6.20, 5.64, 5.47