Octex Cameron Browne (2008) Octex is a 3D path-making game for two players.

Rules

Tiles: Two players, White and Blue, share a common pool of ? Octex tiles as shown in Figure 1. Each tile is octagonal, divided into four colours and has a coloured square plug of half thickness centred on each face.

 Figure 1.  Front, back and side views of an Octex tile. Figure 2.  The board.

Start: The board consists on an 5x5 grid of square holes which is initially empty (Figure 2).

Play: Players take turns placing a piece to nestle in either:
1) An empty board hole, or
2)
The square hole formed where four tiles meet on the same level.

Figure 3 shows an example of a stacking move in which a tile is placed to nestle in the square hole formed by four mutually adjoining tiles. Note that that there is initially a blue path running from top left to bottom right (left) but that the move breaks this path (right).

Figure 3.  White's stacking move breaks the blue path.

Aim: A player wins by forming an orthogonal or diagonal line of three bumps of their colour, such that the bumps at each end are joined by a connected path through same-coloured regions (not including any bumps). If a move achieves this for both players then the mover loses.

For example, Figure 4 (left) shows a vertical line of three Blue bumps, however this line does not win as the bumps at each end are not connected by a bumpless Blue path. Piece a wins for Blue as it joins the end bumps with a bumpless Blue path.

Figure 4.  A non-winning line (left) and a winning line (right).

History

Octex tiles and rules by Cameron Browne and copyright (c) Cyberite Ltd 2008. Thanks to Stephen Tavener for suggesting the "N bumps in a row" winning condition.

The name Octex refers to the tiles having eight (oct) sides and six (hex) distinct coloured parts, in addition to the 'X' shaped colourings of the pieces.

Octex can be played on Richard's PBeM server - check out the help file for more details. Please challenge me (camb) to a game any time.

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