Concepts

Here we will try to teach you the basic concepts used in draughts literature and online magazines.

The numbered board

The diagram to the right shows the numbered draughts board where each playable square is numbered squentially starting from the black players last row and continuing row for row until the white players last row. These numbers are primarily used for recording/displaying moves like this: 11-15, this means that a piece was moved from square 11 to square 15. If a piece is jumped e.g. from square 6 a piece placed on 10 is jumped then this moves is displayed like this 6x10x15 or abbrivated 6x15. Eventhough the same board is used in draughts and in chess the notataion used is different. The notation in chess is related to rows and columns these are of less importance in draughts. Because only half of the squares are used the symmetri is more complex than in chess; a square in a row might not even be playable in another row or column etc. Focus is therefore more on individual squares and sometimes on diagonals.

Important Squares

On the diagrams below we have pointed out the names of the most important squares on the draugths board 





Double corner squares
An important safe heaven where a crowned piece can "seesaw" back and forth in order to draw the game
The single corner square
A very weak square because of the limited mobility even for crowned pieces
The dust hole
A weak square to place a regular piece if white has a piece placed on 30, since the only legal move losses the piece
The dog hole
A weak square to place a regular piece if white has a piece placed on 32 becase there are no legal moves for the piece


The opposition

Having the opposition is an important strategic concept but how do you find out who has the opposition ? Look at the diagram on the right, here half of the squares are marked, namely those squares that are in black's system (those not marked are in whites system). The system squares are found by drawing a line from the players back rank squares and straight down the board. You simply count the pieces and if an odd number of pieces are in your system and it is your turn you have the opposition otherwise your opponent has the opposition. That is if there is and odd amout of pieces and it is opponents turn the opponent has the opposition, or if there is an even amount of pieces and it is your turn; the opponent has the opposition.

Phew it can be a bit difficult to remember but this frase has helped me remember it for some reason: odd'n'turn. Note that having the opposition only makes sense if the players have the same amout of pieces.