Rechteck mit Löcher

great-puzzle
id = 86
status = timer expired
time = 00:30:00.3
unique solutions = 0
using part
animate    
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Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 21:33:04 up 71 days, 3:43, 2 users, load average: 5.01, 5.10, 5.08