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 | 16:42:18 up 67 days, 22:52, 1 user, load average: 5.81, 5.57, 5.46