Crossway
Crossway Rulebook
Table of Contents
Table of Contents
Introduction
Crossway is played with a Go set. The board starts out empty as shown in Figure 1. Each player takes possession of all of the stones of one color. Draws and ties cannot occur in Crossway.
Figure 1 - Initial Setup: empty board, Black and White stones shown at the edges of the playing area.
Stone Placement
Players take turns adding their stones to the board, one stone per turn. A player must never complete the formation shown in Figure 2 or a 90 degree rotation of this formation. Figure 3 shows all available placements for Black, marked with hollow circles. Black makes the first placement of the game.
Figure 2 - Don't Form This Or Its Rotations.
Figure 3 - Black's Legal Placements.
If you have no more placements available, you forfeit your turn and your opponent can continue making placements until he completes his goal connection.
Crossway makes use of the pie rule. See the Pie Rule section below.
Object of the Game
For White to win, White must form a contiguous sequence of white stones connecting the West edge to the East edge of the board. Each stone in the sequence must be connected to neighboring stones in the sequence via horizontal, vertical, or diagonal adjacencies. Likewise for Black and the North and South edges. A corner is considered to be part of both adjoining edges.
Figure 4 - White Has Won: a contiguous white chain runs from the West edge to the East edge.
Pie Rule
As noted earlier, Black makes the first placement. White then has the option of switching colors with Black, and claiming Black's first move as his own. If White chooses to exercise the Pie rule, Black then becomes White and now makes the second move of the game. The Pie rule can only be used once and only on the second move of the game.