This game is generally called Cheat in Britain and Bull$#@% in
the USA. In many books it appears as I Doubt It. There can be three
or more players - probably no more than six.
A standard pack is used, with no jokers. An equal number of
cards (five or more) is dealt to each player's hand. Each player
must keep the number of cards that they own clearly visible at all
times. The objective is to get rid of all the cards in your
hand.
One player, designated as the lead, begins a round by playing a
single card face down, starting a stack in the center of the table,
and announcing a rank - such as "queen", "seven", "ace", etc. The
suit doesn't matter - just rank. The card played may or may not
actually match the announced rank, but no one knows for sure except
the person who played it.
Going clockwise, each player then takes a turn consisting of one
of two options. Either they pass without playing a card or they
play a single card face down on the stack. The played card is
claimed to match the rank announced by the lead, but in fact the
card may or may not match this rank. Note that the rank announced
by the lead must be followed until the round is over.
The play continues around the table as many times as necessary
until everyone passes or there is a challenge. Note that if all the
other players pass, it is perfectly legal (and very common) for one
player to repeatedly add cards to the stack.
The round can end in two ways. Either all players pass in which,
the cards in the stack are removed from play, without being
revealed. The last player who played a card on the stack takes the
lead in a new round and new stack (possibly announcing a different
rank).
After any play, and before another card is played on the stack,
the player of the last card may be challenged by any other player -
you do not have to wait for your turn to challenge. The challenging
player is the first who touches the stack and declares "Doubt". The
top card of the stack is then revealed. If it is something other
than the rank announced by the lead, then the person who played it
must pick up the stack. The challenging player then has the lead.
If the played card matches the rank announced by the lead, then
it's the challenged player who gets the lead and the challenger who
must pick up the stack.
When the player whose turn it is to play has just one card, and
that card is the correct rank to match the lead (or if it is that
player's turn to lead to a new stack), the player wins the
game.
This cache is one of ten in which you will obtain the
coordinates for the final "Deal Me In - Cache in your Winnings".
Each of the ten caches are micros and contain a clue to the final.
After finding all of the clues, you will have to solve the puzzle
of the clues to locate the final.