Bart
Youre quite correct, Buzkashi is the name, and its an amazing sport, i ride every now and then when my security team aren't around. will try and post some other images, I did a photo book on it here, and has sold quite well. (well my parents both bought copies

seriously, have shifted 80+ at last count, new print run on way.
re rules/referree, hmm, no ref, there is a guy who gets involved when the calf is on th ground and no progress in moving it after 5mins or so, but thats about it. no weapons allowed except whips, (knives were used until 50years ago or so.
each area has its own type of buzkashi, some is set out on the open plains with no out of bounds, but here in Kabul its generally played in an arena, not that means they have to (or do) stay in it however.!!
Front feet of horses are shod, back feet are au nature, heres me on Black horse (believe it or not all horses are referred to by their colour, this one is called"black" horse. and yes there are other black horses in same stable, who are also referred to as Black horse, (i gave up asking.) ps, they rear vertical on demand, 1 expat here didnt realize this and was killed recently going over the back.