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Three Man Chess

3 man circular chess

“Three Man Chess is head-to-head-to-head mental combat”

About 3 Man Chess

3 Man Chess is played “in the round,” that is, the field of play is circular.  For the most part, 3 Man Chess is played just like conventional Chess. – there was NEVER any intention of trying to make the game “better” because that can’t be done. However, being able to play with three minds interacting creates situations that never arise in conventional Chess.

  • 3 Man Chess’ circular game board consists of 6 concentric ranks of 24 files and an open central “void” that pieces may pass, but not stop on. There are teardrop shaped curves drawn on the board to help diagonal moves navigate the “void.”
  • 3 Man Chess uses conventional chess teams (three of them!) – 16 pieces that follow all of their traditional rules; 8 pawns start on rank #2 protecting 2 rooks, 2 knights, 2 bishops, a queen and a king which start on rank #1 (the outermost rank).
  • The teams are separated from each other by “moats” and “creeks” that are impassable at the start of the game.
  • Diagonal moves follow the drawn guidelines, passing across the center to the opposite “spoke.”
  • Straight moves may also pass across the central “void,” or move around the circular ranks.

After just a couple of turns around the board, strategy becomes intensely complex and fascinating! An unexpected move might well result in a cascading massacre. Defense is crucial since a diagonal move through the center, or a horizontal move around the center can sneak up behind you. Your two opponents can team up to checkmate you, or ultimately you can checkmate both of them at the same time!



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How to Achieve Checkmate in 3 Moves-Chess

fools-mate the fastest checkmate

checkmate 3 moves
checkmate 3 moves

There is the 2-move checkmate, or Fool’s Mate, and the 4-move checkmate, or Scholar’s Mate, but do you know the 3-move checkmate? Grab a friend, play white, and your next game of chess will take longer to set up than to play. You can achieve checkmate in three moves with capturing, or without capturing. For either of these methods to work requires some pretty bad play from your opponent, but maybe you can catch her cold at the start.

One way to do this:

1. Move your King Pawn forward to e4. In both of these methods the key piece for you is your Queen. The Queen is the piece that you are going to use to achieve the checkmate, so your first move should be to open up space for the Queen to move diagonally. Moving the King Pawn forward two spaces to square e4 achieves this (e4).

2. Capture your opponent’s Pawn at f5. Now use your Pawn to capture your opponent’s advanced Pawn by attacking on the diagonal. Notated, that’s e4xf5. Here you are trying to encourage your opponent to move their Knight Pawn forward two spaces to g5, so it is alongside your Pawn.

3. Move your White Queen to h5 (Qh5). Checkmate! Now you can move your Queen on the diagonal to h5 and you have your opponents King pinned. That’s game over! You’ll notice that if your opponent hadn’t moved their Pawn forward two in their last turn they could have blocked off your Queen by putting a pawn in her way by g6.

Call out checkmate! Now you can take the King with your Queen on the diagonal and celebrate a very swift victory. If your opponent has fallen into the trap they will likely be a bit annoyed, so don’t gloat too much!

See the video for a good explanation:

How to Achieve Checkmate in 3 Moves-Chess

Source: Youtube and
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three dimensional chess

Star Trek 3D Chess

Checkers vs Chess

Online checkers and three-dimensional chess each offer unique challenges that cater to different strategic thinking levels. Checker online, with its straightforward rules and two-dimensional play area, focuses on foresight, strategy, and the ability to anticipate an opponent’s moves within a simpler framework. Its difficulty lies in mastering these strategies in a confined space with limited types of moves. In contrast, three-dimensional chess, with its multiple levels and complex rules, presents a more intricate challenge. It requires players to think in a multi-layered space, considering a broader range of movements and strategies. The difficulty in three-dimensional chess is not just in the strategic depth but also in visualizing and maneuvering pieces in a more complex environment. While online checkers hones strategic planning within a simpler context, three-dimensional chess challenges players to adapt these skills to a far more intricate and multidimensional battlefield.

Probably the most familiar 3D chess variant to the general public in the middle 20th century and early 21st century is the game of Tri-Dimensional Chess (Tri-D Chess), which can be seen in many Star Trek TV episodes and movies, starting with the original series and proceeding in updated forms throughout the subsequent movies and spinoff series.

Star Trek

Spock playing 3d chessThe original Star Trek prop was assembled using boards from 3-D Checkers and 3-D Tic Tac Toe games available in stores at the time (also visible being played in the original series episodes) and adding futuristic chess pieces. Rules for the game were never invented within the series; in fact, the boards are sometimes not even aligned consistently from one shot to the next within a single episode.

The Tri-D chessboard set was made popular by its inclusion in The Star Trek Star Fleet Technical Manual  by Franz Joseph, who invented starting positions for the playing pieces and short additional rules. The complete Standard Rules of this game were originally developed in 1976 by Andrew Bartmess (with approval from Joseph), and he has subsequently expanded and fine-tuned them.

There also is a Creative Commons-licensed manual written in Italian by Marco Bresciani, which presents a complete and faithful translation of the latest version of Bartmess’ Standard Rules, with instructions on how to build a chessboard and many other things. This manual is available through the Star Trek Italian Club (for members only, see external links, below). Marco Bresciani also made a software project as an Information Technology Laurea Degree final thesis, that allows playing Tri-D Chess with Bartmess’ Standard Rules full support. There are various computer applications for playing Tri-D Chess.

A set of tournament rules for Tri-Dimensional Chess written by Jens Meder is available on his website, However, Meder’s rules are based on FIDE’s Rules more than Andrew Bartmess’s Standard Rules, with some deviations too.

Asimovian Hyperchess

Isaac Asimov’s science fiction short story “A Perfect Fit” refers to a 3D chess game which is effectively eight chessboards stacked upon each other, making the playing area cubic (see also Cubic chess) rather than square (that is, exactly one dimension more than ordinary 2D chess). The same variant is also mentioned in Pebble in the Sky, during the early Galactic Imperial period on Earth.

Asimovian Hyperchess has two lineal variants :

  • Roseate Formation : The King is surrounded by a ‘ring’ of Queens, and the Bishops etc, ending in a ring of Rooks. Both sides possess a ‘wall’ of pawns in the 2nd rank. This is the orthodox formation of Asimovian Hyperchess, and described in both novel and short story by the author.

Cruciformation which has three sub-variants:

  • Type 1 : The King is central, with a ring of Queens, and then a ring of Bishops interspersed with Knights, a tertiary ring interspersed with bishops on diagonals, and ultimately Rooks interspersed with Knights at their tertiary move points (assuming a central quadrant L-movement). Viewed from the player’s perspective, there is an impression of nested crosses.
  • Type 2: The King is central, surrounded by a ‘cross’ of queens interspersed with bishops, and then similar interspersed rings of Bishops + Knights, Knights + Rooks, and ending with a ring of Rooks. Viewed from the player’s perspective, there is an impression of a Maltese Cross.
  • Type 3: The King is Central, and formation is identical to Type 3, except that at diagonal points in the Knight’s ring, a quartet of Queens are flanked by minor cruciforms of Bishops interspersed with knights. From the player’s perspective, there is a central cross with a quartet of mini-crosses, queen centered, near the corners of the ‘wall’.

Asimovian Hyperchess is not easily played. Asimov himself imagined a chess set being quite compact, but even with standard boards and pieces it is highly unlikely that tracking pieces and their movements is easy.

Mobility of pieces is the same as other three-dimensional chess forms, in that a pawn may move forward, and take a piece in the third dimension. The same rules apply to other pieces, and in Asimovian Hyperchess, Knights possess a remarkable ability, when acting in concert to permit a player to achieve a checkmate in less than 20 moves.

For effective playing of the game, it is theorised that a chess display computer program would be of the most use, but that it is highly unlikely that a computer would be able to play Hyperchess efficiently, as move prediction more than 8 moves ahead is likely to tax even an IBM Bluegene Mainframe beyond its standard abilities.

To date, Asimovian hyperchess has only had sporadic application, and there are few recorded instances of it being played.

Other variants

Another variant of 3D chess is that simulated by the 3dchess program for GNU/Linux. This variant is played on three standard 8×8 boards, stacked vertically. The middle board features the standard pieces, while the following new pieces populate the other two boards:

  • Prince (King)
  • Princess (Queen)
  • Abbey (Bishop)
  • Cannon (Knight)
  • Galley (Rook)

The movements of various pieces have been modified to allow them to move across boards (for example the Cannon must move three spaces in one direction, two in a perpendicular direction and one in the remaining perpendicular).

This version was developed and produced in a plastic board game format by Mind Games Manufacturing Limited, a company incorporated in Ireland in 1992. Although about 2,000 copies were manufactured, the company closed after a year and a half.

A variant possibly similar to Star Trek ‘s Tri-Dimensional Chess is seen in Legend of the Galactic Heroes, a Japanese science fiction novel. Another SF 3D chess game is Cheops or Pyramid chess, mentioned in the Dune novels of Frank Herbert, which has the object of simultaneously placing one’s opponent in checkmate and one’s own Queen at the apex of the pyramidal board.

A highly specialized three-dimensional chess variant is Gary Gygax’s dragon chess.

Millennium 3D Chess is a similar 3D chess variant which is also played on three standard 8 by 8 chess boards (3x8x8). Millennium 3D Chess rules were written with the objective of extending the traditional chess game into a multilevel environment without distorting the basic game. To this end, Millennium 3D Chess has not “created” new chess rules, but instead extended the traditional rules to allow for multiboard play. Other than the concept of moving between chess boards (levels), all traditional two (2D) chess rules apply. A free PDF copy of the rules can be downloaded from Millennium 3D Chess Rules.

See more info at WikiPedia . . .