Went back to TBC Kara to complete a transmog set and ran some alts through it one after the other till I got a very workable strat.
To follow this strat you’ll want to use your fav engine to search up standard Chess Notation.
Open the game by talking to your faction leader then immediately unmount it.
Run back down and click the pawn at G2 until you can move it then use the boot icon to move it to F3 (notation assumes you are on your side facing opposition). Click to dismount pawn.
Now jump back down and move the rook analog (daemon/elemental) from H1 to G2. These are AOE pieces so you want to move them toward the center of the board. Unmount.
Now mount pawn directly ahead of the King/Warchief ahead. It doesn’t matter if you move it diagonally or forward. This is so as soon as your opponent “cheats” by setting squares aflame you can move your King/Chief out of the fire.
Mount the pawn at B2 and move it forward or toward the center (if that space is unoccupied). Unmount.
Mount the rook (elemental/daemon) at square A1 and move it to B2. Unmount.
If it has not already happened the “cheat” will soon happen so be ready to move your “king” piece. Move it in the general direction of the opposing faction leader. Unmount.
Mount your healer piece (cleric/necrolyte) at C1 or F1 (whichever one is not standing in fire) and put a heal on whatever of the following pieces need a heal most: king or one of your AOE “rooks”. Stay on this piece and continue to heal the king as a priority, the closest AOE piece to the opposing king as a second priority, and use the cleric/necrolyte damage ability on the opposing faction leader piece as a third priority.
I’m sure it’s possible to lose if you follow this strategy due to variance in the opposing “player” artificial intelligence algorithm - but I have yet to lose since I started doing this.
Waste as little time as possible doing your piece swaps and you should be fine.
Note: You must complete The Banquet Hall – [Moroes] to access The Opera House – and [Opera Event] before you can access the Chess Event. On the way to Chess you’ll pass The Menagerie and find [The Curator] is hard not to kill. You do not have to clear everything if all you want to do is get past Chess and on to Netherspace – [Prince Malchezaar]