Ah, that one.
While myself and my guildie were doing a temporary exchange for boosting our RwL achievements, a [pet]Netherspace Abyssal[/pet] happened to be the only pet neither of us had.
Running raids rather than buying pets, I visited Karazhan about 20 times and often was too lazy to do the chess event!

Or rather, was annoyed enough with battle for Hyjal. And when Abyssal finally dropped, it had a breed that didn't satisfy me, so I needed to apologise the AH anyway.
Memories of Gráinne reach the pre-WoD times. Now, you don't need an H/H minion for B-rated explosions anymore, as [pet]Crimson Spore[/pet] and [pet]Iron Starlette[/pet] can get the same results. Though I need to admit that I feel a bit stagnant having all three of infernals (adding [pet]Abyssius[/pet] and [pet]Minfernal[/pet]) P/P.
As Karazhan is such a plentiful place, if you still don't want to waste your opportunity for getting this pet, you actually don't have to be afraid of the Medivh's game. You need to do just the same what your average PvP pet players do: use your AoE units (daemons or elementals) to leave the opponent units defenseless.
Well timed, @Lio, I've recently joked about basing a very hypothetical pet brawl on this chess event (no cheating, tho!).
A following brainstorming could eventually lead my poor pal to a sleepless night!
