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 | 12:04:40 up 74 days, 18:14, 2 users, load average: 4.88, 4.74, 4.73