Integrate and combine game formations in a chess variety

Have an operating chess variety in beta on play stores and will release shortly. Presently played in three different formations using normal rules of chess This game was built in Unity and uses Photon for multiplayer. Experience required in both areas. Game has both a player to AI and player to player mode. We are introducing three new game formations to be played on six different game boards These are random play positions and does not require any coding changes to game rules. The requirement is for the building of six game boards on a tile by tile basis (72 tiles per board) And integrate new boards into current UI and creating new UI for these new game formations, and adding new formations (3) to a current menu. We have the gfx files required and the sfx files to be used are already used in present game play. File is currently 44MB (est) and asking to keep below 50MB, hence board construction is on tile by tile basis as opposed to loading completed boards. All current functions such as check and checkmate sfx etc will have to be linked to the new game boards so that they function as others do presently. the games current website is [login to view URL] Bids should reflect total estimated hours and cost and availability.