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Split Phase Tri-Plane

Introduction

{IMAGE to be added - PENDING FILE UPLOAD BUG FIX} PRE-SET Link added...

Intro:

The game of Split Phase Tri-Plane came to me while I was driving at 60 mph in heavy 3-lane traffic and bright sunlight created an uncomfortable greenhouse affect within the car. The game is related to chess and Shogi.

A pre-set link for now is:

/play/pbm/play.php?game%3DSplit+Phase+Tri-Plane%26settings%3Ddefaultg

However; the pre-set has no hold cells at present so players would need to manually keep track of those.

Setup

As in the above figure [PENDING THE RETURN OF FILE-UPLOAD ABILITY]. The game requires three 8 x 8 boards which we will call A, B and C. Boards B and C each have a piece hold-area for storing captured pieces [turned to your color] from Board A. From these holds the captured pawns and pieces be dropped onto the associated Board B or C.

Board A – Is set up like a Fide Board but each King is replaced with a Split-Phase. A Split-Phase moves like a King (including the ability to castle). But it does not experience check or mate. It can be captured. Otherwise Board A functions under Fide rules. Pawns (on Board A only) can promote to any piece except a Split-Phase.

Initially Boards B and C are empty except for Kings on their traditional squares.

Pieces

See Rules. Also note that piece captured on "Board A" split as follows:

Pawn – Splits into 2 pawns

Rook – Splits into a Wazir and a War Machine (movements given below)

Knight – Splits into 2 Knights

Bishop - Splits into a Ferz and an Elephant (movements given below)

Queen – Splits into a Bishop and a Rook

Split-Phase - Splits into 2 Queens.

Abbreviated:

P : P / P

R : W / WM

N : N / N

B : F / E

Q : R / B

SP : Q / Q

Special Piece Movements:

Wazir - Horizontal or Vertical, 1 space

Ferz - Diagonal, 1 space

War Machine - Jumps over one space, horizontal or vertical. Captures by displacement, not the jump-over.

Elephant - Jumps ove one space diagonally. Captures by displacement, not the jump over.

Rules

Object of the Game: Win by checkmating a King on either "Board B" or on "Board C" (not both). Note that "Board A" has no King. A Stalemate on Board B or C is an instant draw, as is perpetual check. If a player looses all pieces and pawns on Board A, or cannot move on Board A (for example, has a blocked pawn) then play on Board A stops; HOWEVER, play continues on Boards B and C until a Win or Draw condition occurs.

How to Play.

Each turn has 3 steps per player, conducted in this order.

1) Move on Board A

If you capture a pawn or piece – put one split component in your Hold B, put the other split component in the your Hold for Board C.

2) Move on Board B; or drop a piece (or pawn) on Board B

3) Move on Board C; or drop a piece (or pawn) on Board C

Movement on Board A is as in Fide with the Split-Phase piece replacing the King. The Split-Phase is allowed to castle. He can even castle through check because he is immune to check.

*** When a piece or pawn is captured on Board A, the unit splits and changes colors (see pieces). 1 piece goes into Hold B; one goes into Hold C. Pawns split into 2 pawns. Pawns in B and C Holds can be dropped on any free space except the last rank. For Boards B and C only, pawns [Upon reaching the last rank]turn into DeadWood. DeadWood cannot move and cannot be captured. For DeadWood in the pre-set you can use the block pieces (BL for White and bl for Black).

YOU CANNOT DROP A PIECE FROM HOLD B ONTO BOARD C, OR VISA VERSA.

*** When a piece or pawn is captured on Board B it leaves the game.

*** When a piece or pawn is captured on Board C it leaves the game.

REMEMBER: YOU WILL NEED TO WIN ON BOARD B OR ON BOARD C.

Notes

Theory:

The game to a large degree is about imbalances on three boards. All 3 boards start out well-balanced… but captures on Board A will lead to unequal power distributions on the other 2 boards. It is those other 2 boards upon which checkmate, stalemate, or perpetual check can occur, thus leading to victory, defeat, or a draw.

(c) August 2006 by Gary K. Gifford



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By Gary K. Gifford.
Web page created: 2006-08-26. Web page last updated: 2006-08-26