Rechteck mit Löcher

great-puzzle
id = 86
status = timer expired
time = 00:01:00.2
unique solutions = 0
using part
animate    
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Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 19:33:36 up 67 days, 1:43, 1 user, load average: 5.92, 5.49, 5.37