Rechteck doppelt

5*5 5*5 (25.Problem)
id = 144
time = 00:00:00.3
unique solutions = 0
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Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 18:05:26 up 73 days, 15 min, 1 user, load average: 5.87, 5.36, 5.07