Infinite Recursion Chess

Setup

White's Board:
+---+---+---+---+---+---+---+---+
| r | n | b | k | q | b | n | r |
+---+---+---+---+---+---+---+---+
| p | p | p | p | p | p | p | p |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
| P | P | P | P | P | P | P | P |
+---+---+---+---+---+---+---+---+
| R | N*| B | K | Q | B | N | R |
+---+---+---+---+---+---+---+---+


Black's Board:
+---+---+---+---+---+---+---+---+
| r | n*| b | k | q | b | n | r |
+---+---+---+---+---+---+---+---+
| p | p | p | p | p | p | p | p |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
| P | P | P | P | P | P | P | P |
+---+---+---+---+---+---+---+---+
| R | N | B | K | Q | B | N | R |
+---+---+---+---+---+---+---+---+

N*/n* are mega-pieces.

Pieces

A mega-piece is a piece that is itself another game (a "sub-game").

All the other pieces are as in international chess.

Rules

On White's board, the white player moves first, and the white kingside knight is replaced by a white mega-knight which is the sub-game on Black's board.

On Black's board, the black player moves first, and the black kingside knight is replaced by a black mega-knight which is the sub-game on White's board.


Mega-pieces have different states:

Neutral: the sub-game that this mega-piece is, is not complete. A Neutral mega-piece cannot capture or be captured. It can, however, make non-capturing moves and it does give check.

Armed: the sub-game that this mega-piece is, is complete, and the winning player is the owner of the mega-piece. An Armed mega-piece can capture, be captured, and can give check (ie. it moves as a normal piece).

Disarmed: the sub-game that this mega-piece is, is complete, and is a draw. A Disarmed mega-piece cannot capture, but can be captured and can give check. It can make non-capturing moves.

Frozen: the sub-game that this mega-piece is, is complete, and the winning player is not the owner of the piece. A Frozen mega-piece cannot move, but can be captured. It does give check.


           Capturing   Non-Capturing       Is       Gives
             Move          Move        Capturable   Check
           ---------   -------------   ----------   -----
Neutral       NO           YES             NO        YES
Armed         YES          YES             YES       YES
Disarmed      NO           YES             YES       YES
Frozen        NO           NO              YES       YES


Game play:

White makes the first move on the White board and Black makes the first move on the Black board.

Mega-pieces change states only after the moves on BOTH boards are completed. If both sub-games complete on the same move, mega-pieces do NOT change state.

Subsequent moves are made only when the current move on BOTH boards is complete, or if it is not possible to make a move on one of the boards.

Pawns promote as normal -- they may not promote to a mega-piece.

A sub-game on a particular board is won as in international chess (ie. checkmating the King).

The game is won by either:

1. Winning both sub-games.
2. Winning one sub-game and drawing the other.

The game is a draw if either:

1. Each player wins a sub-game.
2. Each player draws a sub-game.