an abstract game for 2 or 3 players
1 Icehouse stash of a unique color for each player: 5 large, 5 medium, and 5 small pyramids which need not be stackable.
A blank sheet of 8.5" x 11" paper and a pencil would be handy.
The object of this game is to be the first to form three connected groups of five pieces of your color.
Draw 19 spots on a sheet of paper as shown in Figure 1. Dots or any other shapes are fine, as long as they are clearly visible.
These spots could be regarded as the vertices of a grid of equilateral triangles, or the centers of a grid of regular hexagons. The overall shape of the grid is hexagonal as well. There are 12 spots around the perimeter of the board, and 7 interior spots.
The board is empty of pieces at the start of the game. Each player has their stash arranged in front of them, in full view of the opponents. These off-board pieces are said to be in hand.
Players choose who moves first. Perhaps the youngest player could move first. Play proceeds clockwise around the board.
On your turn you either:
You may not drop a piece onto any interior spot. You may not both drop and move in the same turn.
There are two different ways to move a piece:
You may not make both types of move in the same turn.
You may not pass on your turn as long as a legal move is available to you.
If you have no legal move, you lose your turn and play proceeds to the next player.
If you are moving a piece instead of swapping a pair, all the spots you move through and the destination spot must be vacant.
Small pyramids move only to adjacent spots, a distance of one spot.
Medium pyramids may move up to two spots in a straight line.
Large pyramids may move as far as desired in a straight line in any of the six directions.
A large piece may swap places only with an adjacent medium piece.
A medium piece may swap places only with an adjacent small piece.
A small piece may swap places only with an adjacent large piece.
You may swap two adjacent pieces of your color, as long as they are of different sizes. You may not make any additional move on your turn.
Pieces of the same color which are on adjacent spots are said to be connected to each other.
Any piece of the same color adjacent to a connected group is part of that group.
If your move produces a connected group of five pieces of the same color, then if that does not end the game, those five pieces are removed from the board and are out of play for the rest of the game. You might form such a connected group for an opponent with a "swap places" move, although this is generally not advisable.
You are not allowed to form a connected group of more than five pieces of the same color, either for yourself or an opponent. Any such move is illegal.
The first player whose third connected group of five pieces is formed, is the winner. If your move simultaneously forms the last connected group for both yourself and an opponent, then you still win.
Players may agree to a draw if no one sees a way to make progress.Some hints and tips