Ultima how to play .
The rules are the same as regular chess except for these changes for a refresher of those rules .
Check out this video , several Spectators create secret rules which change how the chess pieces move and interact .
The players playing the game .
Try to discover these rules as they attempt to checkmate their opponent .
Before the game begins , the Spectators decide between themselves which pieces each of them will write rules for .
Then each of them writes down their rules .
Each spectator may only create rules for one piece type .
For example , all the pawns , these rules may control the way a piece moves , captures is captured or if it causes effects to other pieces on the board , a piece may be given an invoke command which causes it to affect other pieces on the board without moving a spectator can combine any or all of these types of rules together for their piece .
And they may have a pieces rule affect other pieces .
When creating rules .
It is recommended to keep it simple concise and specific .
For example , you could write down that the king may invoke to trade places with a friendly rook after a spectator finishes writing a secret rule for a piece that spectator also gives that piece a new name for the duration of the game .
These names and the existence of any invoke commands are announced to the players at the start of the game .
After the game has started , the Spectators may privately discuss how their rules interact on your turn .
You must attempt to move or invoke one of your pieces .
Then the spectator for that piece declares whether the action is legal or illegal .
If it is a legal move , the piece stays where it is .
If an invoke is performed , then the spectator of that rule performs the action of the invoke without saying what the invoke actually does .
If you perform an illegal move , then the piece is returned to its position from the start of the turn .
If the invoke isn't allowed , then it is stated and nothing happens in the original variant , your turn would then end without a legal move being performed .
However , there is a variant that you can play where you continue attempting until you perform a legal move or legal invoke , decide which version you will play at the start of the game .
If playing with the first option , the only exception is if you are in check , then you can repeatedly attempt moves until you are able to get out of check .
Spectators may need to say check to inform the players when their rule is causing a check you can also play that the check rule is ignored .
The first player to checkmate their opponent wins after which Spectators reveal their rules .