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 | 21:25:18 up 73 days, 3:35, 0 user, load average: 5.25, 4.79, 4.77