Page 5 of 18
Croda was invented by the Croation mathematics professor and Draughts master Ljuban Dediç in order to create a draughts game with a smaller margin of draws. He did so by basically replacing the sideways move of a man in Turkish Draughts, by a diagonally forward move. It's easy to argue the game's superiority to Draughts: anyone but a draughts player can see that.
I remember two successive Draughts worldchampionship matches between Dutch grandmasters Harm Wiersma and the late Jannes van der Wal, in which only one decision was reached in forty games. In both cases, Ton Sijbrands, who covered the games for one of the daily papers, ran out of adjectives to describe the draws - thrilling draws, exciting draws, blood-curdling draws, abysmal dangers allowing only the narrowest of escapes, etc. It became really funny when a journalist put all headers together on the backpage.
It showed what everyone except draughts players can see: top level Draughts is as dead as the dodo in match play.
Croda in turn sparked off Dameo.
download applet play online a word on notation
|You can download this MindSports applet, which doubles as a Dameo applet and is tailored to save games played in the Pit or the ArenA, offline.|
The rules mention men and kings. A king is a promoted man. If the difference doesn't matter, they may also mention pieces, for instance 'the number of pieces on the board'.
The applet shows the board and the pieces in initial position. There are two players, black and white. White begins. Players move, and must move, in turn.
If a player has no legal move he loses the game. This may come about either by being eliminated or being blocked completely.
|Capture has precedence over a non-capturing move. If the player to move has no capture to make, he must move a man or a king.|
Moving a piece - promotion
A man moves one square forward, either straight or diagonally. The diagonal move of a man is the only diagonal move in the game. All other moves, whether capturing or non-capturing, are orthogonal only.
If a man ends its move on the opponent's backrank, it promotes to king. This marks the end of the move.
A king moves any number of unobstructed squares horizontally or vertically, like the rook in Chess. Kings may not move diagonally.
An important detail concerning promotion and capture has to be addressed. Be it first established that completing a capture always has priority! Since men capture by jumping opponent's pieces forward, sideways and backward, a situation may arise where a man, in the course of a capture, visits the backrank without ending its move on it.
In that situation, the man is not promoted.
All capture is orthogonal only. Capture is compulsory and has precedence over a non-capturing move. Majority capture precedes over a capture of less pieces.
- If a man is on a particular rank or file, and next to it is a square occupied by an opponent's piece, then the man captures the piece by jumping over it to the square immediately beyond, which must be vacant for the capture to take place.
If the man can proceed in a similar way in another direction, except a 180 degrees turn, it must do so, taking care beforehand to establish the route that brings the maximum number of captured pieces. A captured king counts as one piece.
If there's more than one way to meet this criterion, the player is free to choose.
- A king looks along open ranks or files. If it sees, at any distance, an opponent's piece and immediately beyond one or more subsequent vacant squares, it captures by jumping the piece and landing on one of these squares.
A king is subject to the same rules regarding majority capture: if it can proceed in a similar way in another direction, except a 180 degrees turn, it must do so, taking care beforehand to establish the route that brings maximum number of captured pieces. A captured king counts as one piece.
If there are more than one way to meet this criterion, the player is free to choose.
|The expression '...it captures by jumping the piece and landing on one of these squares' does not necessarily imply choice. In fact, during the capture the king will usually have no choice because it is subject to majority capture. After jumping the last piece it may have choice where to land.
- The game may end in a draw by 3-fold or mutual agreement.
Croda © Ljuban Dedic
Java applet © Ed van Zon