Help with a chess themed combat

So I am running the final part of a dungeon tomorrow and am not sure if what i have planned will be any good. Ash the tiefling if youre reading this go away lmao.

Basically my idea is that the PCs (party of 4 level 3 characters) will have a combat on a chessboard while a game is being played. The PCs will have to avoid giant chess pieces moving while fighting.

I plan to have the pieces move on every 2 intiative and have the players roll Dex saving throws if they are on squares when pieces move to them or if they are standing beside pieces that are taken. Upon completion of the game the losing sides pieces then comes to life to attack the players.

I'm kind of worried the battle may be dull or not interesting enough for the players as the battlemap is just a flat open space. Does anyone have any thoughts of ways to make the battle more engaging? Or should i scrap everything and wing a new game themed battle