Rechteck mit Löcher

22.Problem
id = 141
time = 00:00:00.4
unique solutions = 0
Received cubes: 64 Required cubes for box= 8
animate    
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 03:58:03 up 73 days, 10:08, 0 user, load average: 4.44, 4.62, 4.77