Strategy in Omega Chess
GM-level analysis of piece values, the scale of operations, tactical possibilities, and endgame theory.
Introduction
Strategies in Omega Chess remain basically the same as in traditional chess; it is important to establish territory, to control the center, to develop one's pieces quickly, and to avoid structural defects such as doubled pawns, isolated pawns, and bad bishops. Where Omega Chess differs is in the scale of operations, the change in relative values for the pieces, and the heightened tactical possibilities provided by the new pieces.
Scale of Operations
Clearly, since Omega Chess is played on a 10 by 10 board with four additional corner squares, events unfold on a grander scale than in regular chess. As well, having a spatial advantage in the center is not as important as in traditional chess, provided one has a compensating advantage on the wings and sufficient space in the center to provide easy transit for the major pieces.
Relative Value of the Pieces
The traditional values assigned to the pieces as a rule of thumb for trading pieces assumes a value of 1 point for a pawn and ranks the rest of the pieces accordingly.
Traditional Chess
| Piece | Value |
|---|---|
| Pawn | 1 point |
| Knight | 3 points (slightly less than 3, actually) |
| Bishop | 3 points |
| Rook | 5 points |
| Queen | 9 points |
| King | Can't be traded; in the endgame, assumed to be between a bishop and a rook in strength |
Omega Chess
| Piece | Value | Notes |
|---|---|---|
| Pawn | 1 | Despite its increased power, a pawn remains at 1 point because this is a relative scale. A pawn that has moved only one square on its initial move takes two more moves to get to the fourth rank, introducing a new element of timing. |
| Knight | 2 | Perhaps a bit more, since it still doesn't seem good policy to exchange a knight for two pawns, but the increased size of the board means it takes longer for a knight to cross the board, hence the devaluation. |
| Wizard | 4 | Perhaps a bit less. Has great range offset by its restriction to a single colour. Not valued as highly as a bishop, but close. |
| Champion | 4 | A bit more powerful than the wizard, but still not valued as highly as a bishop. |
| Bishop | 4 | A hard call since the size of the board increases the range and power of the bishop. Might be worth more than 4 points but still hampered by the restriction to squares of one colour. |
| Rook | 6 | Exchange sacrifices take on a different character, since the rooks exert a lot of power in an open middlegame. Note that rook+king vs king cannot force mate because of the extra corner squares. |
| Queen | 12 | Contentious. Fortress-type positions can be set up fairly easily with rook, bishop and pawn. However, it has been demonstrated that the queen alone can force mate without assistance from the king. |
| King | - | In the endgame, somewhere between a bishop and a rook in strength. |
New Tactical Possibilities
An important feature of Omega Chess is the changed tactical nature of the game provided by the new pieces. The wizard and the champion are both leapers, like the knight. Positions that in traditional chess would be fully blockaded now find themselves vulnerable to sudden and devious infiltrations. Staid, conservative play which has become the bane of international chess events is not as sound as it once was. Omega Chess breathes new life into the game, and gives it an added measure of suspense as the players are left constantly on their guard.
New Endgame Considerations
It doesn't take long for players new to Omega Chess to realize that in an ending with a Rook and King against a King, there is no mating possibility if the lone King can escape to one of the four Wizard's squares. Indeed, it is soon realized that one player can have two rooks, a bishop and a wizard and still have no way to win if the bishop and wizard attack the same coloured squares and the lone King is in a Wizard's corner of the opposite colour.
King & Rook vs. King
In the illustrated position, White is obliged to check the enemy King back to the edge of the board, since Black isn't going to go there voluntarily. 1. Rd8+ Ke9 (attacking the rook) 2. Ke7 Kf9 3. Kf7 The White King must pursue the enemy King because when Black gets to i9, the White King wants to be on h7, controlling i8 so the rook can check on d9, forcing the King to j8, followed by Re8 - Kj7, Rj8# 3...Kg9 (Not 3...Ke8 because of 4. Rd6 Kf8 5. Rd8 mate) 4. Kg7 Kf9 Now it is safe for the Black King to double back. If the Rook was on e8, then it could just retreat along the file and deliver mate next move. Or if it was on any other rank, it could now move to the e-file, but as it is the Rook would be vulnerable to capture.
Mating Combinations with Reduced Material
Lone Queen
Can force mate without King assistance
Two Rooks
Provided enemy King is not in a Wizard or Champion starting square
King & Rook vs King
King escapes to Wizard squares
Two Bishops
Fairly easily
Two Knights
Requires a lot of patience
Two Champions
Mate easily
Champion + Knight
Mate easily
Bishop + Wizard
On opposite colours; technique is involved
Two Wizards
Cannot force mate
Rook + Knight
Fairly easily
Rook + Champion
Fairly easily
Rook + Bishop
Provided enemy King is not on wrong-coloured Wizard square
Rook + Wizard
Provided enemy King is not on wrong-coloured Wizard square
In the remaining combinations, Bishop and Champion, Champion and Wizard, Bishop and Knight, and Knight and Wizard, the requirement for winning is that the enemy King be kept out of the "wrong coloured" corner since the Knight alone, or the Champion alone cannot oust his majesty. As for Knight and Wizard, while it is possible to set up positions in which the enemy King is corralled, there doesn't seem to be a way of forcing these positions.