4,4
Chess on an Infinite Plane (jdh1 - PunchboxNET)

Just as a visual aid, here is the move diagram for the hawk:
Also, notice the game has castling (see rules). This was added to the rules recently.
Good luck to both!

Oops. I got confused on the notation. That was not a legal move and thus this should not count as a move edit. I meant 5,3, sorry

The best way to remember notation is that it's the same as normal chess, i.e. "d4" = (4,4) which is file then rank. It's also the same as mathematical coordinate (x,y) as shown here:
But I myself have gotten it confused!!!
Game rules:
The Pieces:
Black and White each have the following pieces (quantity and name):
1 king
1 queen
2 chancellors
2 rooks
2 bishops
2 knights
2 guards
2 hawks
24 pawns
All pieces move as in classical chess, with the "extra" three pieces moving as follows:
Chancellor (C) - Moves and captures as rook + knight.
Hawk (H) - Leaps exactly 2 or 3 squares in any orthogonal or diagonal direction. The leaping move means it can jump over other pieces.
Guard (G) - Moves and captures the same as a king but is not affected by check.
Pawns play the same and promote at the same rank as in classical chess. White pawns promote at rank 8, and black pawns promote at rank 1. Pawns can promote to chancellor, hawk, or guard in addition to queen, rook, bishop, or knight. Pawns may capture and be captured en passant with the same rules as in classical chess.
Board Setup:
Orange brackets identify the four "classical" corner squares (1,1), (1,8), (8,1), and (8,8).
Castling: King castles with the guard (rather than the rook). All other rules of castling are the same as in classical chess.
There is no fifty-move rule. Draws can only occur from stalemate, threefold repetition, agreement, or a proven case of insufficient material to force checkmate.
All other rules are the same as in classical chess.
Move Notation:
Numeric coordinates are used to identify piece locations as (file#, rank#). Parenthesis are used around each coordinate. Three examples of a move notation:
1) A rook moving from (8,4) to (1,4):
R(8,4)-(1,4) or R(1,4)
2) A rook moving from (1,4) and capturing a piece on (0,4):
R(1,4)x(0,4) or Rx(0,4)
3) A pawn advancing from (-1,7) to (-1,6):
(-1,7)-(-1,6) or (-1,6)
jdh1 plays White. Good luck!