Rechteck mit Löcher

70.Problem
id = 165
status = timer expired
time = 00:30:00.2
unique solutions = 0
animate    
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Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 14:54:39 up 74 days, 21:04, 3 users, load average: 4.42, 4.84, 4.92