When a player has once taken his hand or crib, he cannot amend
his score.
When a knave is turned up, "two for his heels" must be scored
before the dealer's own card be played, or they cannot be taken.
A player cannot demand the assistance of his adversary in
reckoning hand and crib.
A player may not, except to "peg him," touch his adversary's
pegs, under a penalty of two points. If the foremost peg has been
displaced by accident, it must be placed in the hole behind the peg
standing on the board.
The peg once holed cannot be removed by either player till
another point or points be gained.
The player who scores a game as won when, in fact, it is not
won, loses it.
A lurch—scoring the whole sixty-one before your
adversary has scored thirty-one—is equivalent to a double game, if
agreed to previous to the commencement of the game.
A card that may be legally played cannot be withdrawn after
it has been once thrown face upwards on the table.
If a player neglect to score his hand, crib, or any point or
points of the game, he cannot score them after the cards are packed
or the next card played.
The player who throws up his cards and refuses to score,
forfeits the game.