Chuligan z PS (Pronounce Hooligan) is a legend amongst z Pohranicni straze foundation dogs. If you have him in the pedigree he will bring his toughness, presence , large bone, great hips and elbows. If really closely linebred he may produce missing teeth. It is a rare occurrence but it is there. I have seen it 2 or 3 times. There may be more but keep in mind that Chuligan produced hundreds of dogs. 3-4 linebreeding should be no problem as far as missing teeth goes. Please keep in mind that the only perfect dog without faults is a dog on whom you do not have enough data.
I personally would give my right arm for a dog who would produce consistently dogs like Chuligan. Chuligan was a Mr. GSD. I consider him one of 5 best foundation dogs I have personally known. If you look for as close to perfect Czech dog as you can than Chuligan is there right with Titus and Norbo Ben Ju and some others.