Rechteck doppelt

5*5 5*5 (25.Problem)
id = 144
time = 00:00:00.3
unique solutions = 0
animate    
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Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 19:16:30 up 73 days, 1:26, 1 user, load average: 5.74, 5.85, 5.27