Welcome to the network Trellis server. The rules of Trellis are below. The Trellis "challenge" command has the following options. Other commands are the same for all pbmserv games.
Trellis is a connection game played on a checkered board.
More details about Trellis including the complete official rules can be found at http://home.fuse.net/swmeyers/trellis.htm
Implementation by Cameron Browne, March 2003.
The vertical player (V) aims to connect the top and bottom edges of the board with a chain of V pieces, while the horizontal player (H) aims to connect the left and right sides of the board with a chain of H pieces.
Below is a standard 15x15 game won by Vert, who has completed a chain of their pieces from top to bottom.
A B C D E F G H I J K L M N O
15 --- --- --- --- ---V---
--- --- --- --- --- --- --- --- 15
| : | - | : | - | : | - | : | - | : | - | : | - | : | - |
14 --- --- --- --- ---V--- --- --- --- --- --- --- --- --- 14
| - | : | - | : | - | : | - | : | - | : | - | : | - | : |
13 --- --- --- --- --- ---V--- --- ---V---V--- ---
--- --- 13
| : | - | : | - | : | - | : | - | : | - | : | - | : | - |
12 --- --- --- --- --- ---V---V---V--- --- ---V---
--- --- 12
| - | : | - | : | - | : | - | : | - | : | - | : | - | : |
11 --- --- --- --- --- --- --- --- --- --- ---V --- --- --- 11
| : | - | : | - | : | - | : | - | : | - | : | - | : | - |
10 --- --- --- --- --- --- --- --- --- --- ---V--- --- --- 10
| - | : | - | : | - | : | - | : | - | : | - | : | - | : |
9 --- --- --- --- --- --- --- --- --- --- ---V--- --- ---
9
| : | - | : | - | : | - | : | - | : | - | : | - | : | - |
8 --- --- --- --- --- --- --- --- --- ---V--- --- --- ---
8
| - | : | - | : | - | : | - | : | - | : | - | : | - | : |
7 H---H---H---H---H---H---H---H---H---V---
--- --- --- --- 7
| : | - | : | - | : | - | : | - | : | - | : | - | : | - |
6 --- --- --- --- --- --- --- ---V---H---H---H---H---H---H 6
| - | : | - | : | - | : | - | : | - | : | - | : | - | : |
5 --- --- --- --- --- --- --- ---V--- --- --- --- --- ---
5
| : | - | : | - | : | - | : | - | : | - | : | - | : | - |
4 --- --- --- --- --- --- --- ---V--- --- --- --- --- ---
4
| - | : | - | : | - | : | - | : | - | : | - | : | - | : |
3 --- --- --- --- --- --- --- ---V--- --- --- --- --- ---
3
| : | - | : | - | : | - | : | - | : | - | : | - | : | - |
2 --- --- --- --- --- --- --- ---V--- --- --- --- --- ---
2
| - | : | - | : | - | : | - | : | - | : | - | : | - | : |
1 --- --- --- --- --- --- --- ---V--- --- --- --- --- ---
1
A B
C D E F G H
I J K L M N
O
Note that dark squares (denoted by ':') belong to Vert and light squares (denoted by '-') belong to Horz. Connections follow orthogonally adjacent lines between points ('|' and '---') as well as conditional connections: each player connects diagonally across their squares.
Horz has not won in the above example because their connection is broken at I7-J6 where it crosses a Vert square. No diagonal connection exists for Horz across this square but a diagonal connection does exist for Vert, giving Vert the win.
One or two pieces can be placed on empty board points per turn, provided that if two pieces are played then they are three points apart (either a knight's move from each other or in a line). For instance, if Vert plays V (below) they can then place a second piece at any of the points marked x.
--- --- --- --- --- --- --- --- ---
Moves are specified as follows:
swap |
Swap directions to steal the first player's opening move (only available on move 2). |
C6 |
Place a piece at empty point C6. |
A2,C3 |
Place two pieces at empty points A2 and C3 (these must be three points apart). |