tered a man taken
up, men so borne must be entered again. 5. If he has mistaken his throw and
played it, and his adversary has thrown, it is not in the choice of either
of the players to alter it, unless they both agree to do so. 6. If one or
both dice are "cocked," _i.e._ do not lie fairly and squarely on the table,
a fresh throw is imperative.

_Russian Backgammon_ varies from the above game in that the men, instead of
being set as in the diagram, are entered in the same table by throws of the
dice, and both players move in the same direction round to the opposite
table. There are various rules for this game. By some a player is not
obliged to enter all his men before he moves any; he can take up blots at
any time on entering, but while he has a man up, he must enter it before
entering any more or moving any of those already entered. If he cannot
enter the man that is up, he loses the benefit of the throw.

A player who throws doublets must play or enter not only the number thrown,
but also doublets of the number corresponding to the opposite side of the
dice; thus, if he throws sixes, he must first enter or move the sixes, as
the case may be, and then aces, and he also has another throw. Some rules
allow him to play either doublets first, but he must always complete one
set before playing the other. If a player cannot play the whole of his
throw, his adversary is sometimes allowed to play the unplayed portion, in
which cases the caster is sometimes allowed to come in and complete his
moves, if he can, and in the event of his having thrown deuce-ace or
doublets to throw again. If he throws doublets a second time, he moves and
throws again, and so on. The privilege is sometimes restricted by not
allowing this advantage to the first doublets thrown by each player. It is
sometimes extended by allowing the thrower of the deuce-ace to choose any
doublets he likes on the opposite side of the dice, and to throw again. The
restriction with regard to the first doublets thrown does not apply to
deuce-ace, nor does throwing it remove the restriction with regard to first
doublets. A player must first be able to complete the doublets thrown. If
the player cannot move the whole throw he cannot take the corresponding
doublets, and he is not allowed another throw if he cannot move all the
points to which he is entitled.

BACKHUYSEN, or BAKHUISEN, LUDOLF (1631-1708), Dutch painter, was born at
Emden, in Hanover. He was brought up as