Rechteck mit Löcher

22.Problem
id = 141
time = 00:00:00.4
unique solutions = 0
select solution
animate       
XML
Rolf LANG - Remsstr. 39 - 71384 Weinstadt | 19:41:47 up 78 days, 1:52, 1 user, load average: 4.55, 4.82, 4.89