Diplomat chess is a chess variant that is played on a completely circular board with 43 spaces, including a large red circle space in the middle which is considered adjacent to every cell it is surrounded by.
The game has the same pieces and piece movement as standard Chess with a few changes:
1. There is no Queen
2. There are only 1 of each of these pieces: Rook, Knight, and Bishop
3. There are 4 pawns instead of 8
4. Adds a piece called a Diplomat which instead of capturing can suborn enemy pieces, making them changes sides rather than capturing.
5. Pawns become more powerful because instead of changing direction to capture in 2 directions (diagonal right or left). They can capture in 3 directions (diagonal left/right or diagonal down). Pawns still need to move forward, but "forward movement" is defined as movement that moves the Pawn closer to the opposite side. So for that reason, the Pawns movement expands and it becomes a more powerful piece.
Diplomat Chess is different from Circular Chess because the board has a complete circle with 43 spaces, adds the Diplomat Piece, removes the Queen, and expands the movements of many pieces in the game.