Pocket Mutation Chess. Take one of your pieces off the board, maybe change it, keep it in reserve, and drop it on the board later. (8x8, Cells: 64) (Recognized!) By Michael Nelson.
Pagan Chess. Game with two linked board, one for living pieces and one for dead pieces, and a special piece that can move between them. (11x7, Cells: 67) By Mikey Kousre.
Pawn Pusher Chess . Pawns can not move by themselves on a player's side of the board, they must be pushed by other pieces. (8x8, Cells: 64) Author: Marek14 . Inventor: Tony Paletta.
Pawn Shogi. Experimental shogi variant with different types of pawns. (7x7, Cells: 49) By Eric Greenwood.
Pawn-Only Chess . Training chess variant. Only pawns, first promotion wins. (8x8, Cells: 64) Author: Marek14 .
Pawn-Only Chess . Training chess variant. Only pawns, first promotion wins. (8x8, Cells: 64) Author: Uwe Wiedemann.
Perimeter Chess . Pieces other than Pawns and Kings move differently when moving to or from edge squares. (8x8, Cells: 64) Author: Marek14 . Inventor: Tony Paletta.
Pgn2fig . Word macros for converting Portable Game Notation (PGN) files to figurine algebraic notation using chess fonts for the figurines. Author: Alastair Scott.
PI. Commercial multiplayer chess variant for 2 - 12 players. Author: Linda Hudson. Inventor: Dan Brown.
Pi. Commercial multiplayer chess variant, obtained by putting multiple curved and straight boards together. Author: Bryan Lambert. Inventor: Dan Brown.
Piazza San Marco Chess. On random moments, the middle of the board gets flooded, meaning that pieces can get out only by using
special walkways. By Ralph Betza.
Pickle Pot Chess (Blind). Kriegspiel variant where one side can see, but lacks both Knights, a Bishop and both Rooks. (8x8, Cells: 64) Author: Ed Friedlander.
Pickle Pot Chess (Sighted). Kriegspiel variant where one side can see, but lacks both Knights, a Bishop and both Rooks. (8x8, Cells: 64) Author: Ed Friedlander.
PieceEater Chess . Yet another game with an indestructible randomly-wandering neutral piece. (8x8, Cells: 64) By Peter Aronson.
PieceEater Chess. Yet another game with an indestructible randomly-wandering neutral piece. (8x8, Cells: 64) By Peter Aronson.
Pied Color Chess. Oh no! All the colors on the board have been scrambled -- however will the pieces move? (8x8, Cells: 64) By Ralph Betza.
Pillar Chess. Variant with elements from Pillar Checkers. Captured pieces are stacked beneath the capturing piece, stacks can be split. (8x8, Cells: 64) Author: Sergey Sirotkin. Inventor: Sam Sloan.
Pillars of Medusa. A variation of Turkish Great Chess plus two additional pieces, the Morph and the Medusa. (11x11, Cells: 121) By Gary K. Gifford.
The Pizza Kings . An experimental army for Chess with Different Armies, with lots of calories. By John Lawson.
The Pizza Kings. An experimental army for Chess with Different Armies, with lots of calories. By John Lawson.
Placement. Only kings start on board; other pieces are dropped to home square and then moved. (8x8, Cells: 64) Author: Hans L. Bodlaender. Inventor: Walter Weiss.
Planar 4x4x4 Chess . 3D variant played with pieces which are restricted to particular planes within the cubic field. (4x4x4, Cells: 64) By Larry L. Smith.
Platform Chess . Pieces move normally or ride on 2x2 platforms that move themselves. (8x8, Cells: 64) By Robert Price.
Platform Chess. Pieces move normally or ride on 2x2 platforms that move themselves. (8x8, Cells: 64) By Robert Price.
Pocket Mutation Chess. Take one of your pieces off the board, maybe change it, keep it in reserve, and drop it on the board later. (8x8, Cells: 64) (Recognized!) By Michael Nelson.
Pocket Mutation Chess . Take one of your pieces off the board, maybe change it, keep it in reserve, and drop it on the board later. (8x8, Cells: 64) By Michael Nelson.
Pocket Polypiece Chess 43. Game with off-board pocket where all pieces of a type change when one piece of a type is moved normally. (7x6, Cells: 43) By Antoine Fourričre.
Pocket Polypiece Chess 43 . Game with off-board pocket where all pieces of a type change when one piece of a type is moved normally. (7x6, Cells: 43) By Antoine Fourričre.
Poison Chess. Harpies can poison pieces which can be healed by doctors. On 8 by 8 board. By Bryan Lambert.
Poker Chess. Squares contain cards, and players win by forming poker hands with the cards on the squares occupied by their pieces. (8x8, Cells: 64) By Ralph Betza.
Pompeii Chess. Small variant with piece drops, orthogonal pawn moves and one each of all the FIDE pieces. (9x9, Cells: 25) Author: Jeremy Gabriel Good. Inventor: Dan Troyka.
Potential Chess. Pieces start out as any piece and become a particular piece depending on how they move,. By David Howe.
Potential/Demotion Chess . Pieces may move like lower-ranked piece, but when doing so, become that lower ranked piece. (8x8, Cells: 64) By Peter Aronson.
Potential/Demotion Chess. Pieces may move like lower-ranked piece, but when doing so, become that lower ranked piece. (8x8, Cells: 64) By Peter Aronson.
Power Mover. A variant of Hostage Chess with self-capture, promotion and demotion. (8x8, Cells: 64) By Kazuto Asai.
PowerChess . Chess with two extra squares on the middle rows. (8x8, Cells: 66) Inventor: Gerd Degens.
Powerchess. Variant on 10 by 10 board with additional queen and combination piece per player. (10x10, Cells: 100) Author: John Ayer.
Powerchess . Players have 24 pieces to start, with four new piece types. (8x8, Cells: 64) By Gamaliel Perez Jr..
Pre-Chess. Place your first rank as you choose before the game begins. Author: Ed Friedlander.
Pre-Grandchess. Variant on ten by ten board inspired by Freeling's Grandchess. (10x10, Cells: 100) By Eric Greenwood.
Pre-Grandchess. Eric Greenwood realized that Christian Freeling's Great Chess could have arisen with this more normal looking position. (10x10, Cells: 100) Author: Jeremy Gabriel Good. Inventor: Eric Greenwood.
Primitive Chess. Short-range major pieces and no pawns, but a piece like an apprentice for each major piece. (8x8, Cells: 64) By Köksal Karakus.
Primitive Chess . Short-range major pieces and no pawns, but a piece like an apprentice for each major piece. (8x8, Cells: 64) Author: Marek14 . Inventor: Köksal Karakus.
Prisoner's Escape. Free your Prisoner by getting it to an unattacked square -- a small board version of Anticheckmate Chess. (7x8, Cells: 44) By Peter Aronson.
Prisoner's Escape . Free your Prisoner by getting it to an unattacked square -- a small board version of Anticheckmate Chess. (7x8, Cells: 44) By Peter Aronson.
Progressive 007 Chess. Players play increasing numbers of moves each turn, but which color you move simply alternates. (8x8, Cells: 64) Author: Ed Friedlander.
Proximity Chess. Players must move pieces nearest to the arrival square of the last piece moved. (8x8, Cells: 64) Author: Greg Strong. Inventor: W. H. Rawlings.
Putback Chess. A slight variation of Replacement Chess. Captured pieces must be put on an empty square on the board. (8x8, Cells: 64) Author: Hans L. Bodlaender.