What is Calza?
In the standard game here, a player who thinks the last bid is exactly right can call Spot On instead of raising or challenging. All dice are revealed: if the count is exact, every other player loses a die, and if it is not, the caller loses one.
With Calza switched on, the same call becomes Calza and its reward changes. If the count of the bid's face (with wild ones, as usual) is exactly the quantity bid, you win back one of the dice you have lost, and nobody else loses anything. If the count is higher or lower, you lose a die, just as before. Either way you start the next round, unless a wrong call has knocked you out.
Nobody can hold more dice than they started with: a right Calza while you still have all your dice changes nothing. Calza makes the exact call a way to recover, which is most useful late in the game, when you are short of dice and the total in play is small enough to count closely.
Rule changes
| Rule | Standard Liar's Dice | Calza |
|---|---|---|
| The exact call | Standard Liar's DiceSpot On: on your turn, instead of raising or challenging, claim the last bid is exactly right. | CalzaCalza: the same call, made the same way, on your turn instead of raising or challenging. |
| Exact call right | Standard Liar's DiceEvery other player loses a die, and the caller starts the next round. | CalzaThe caller wins back one lost die, nobody else loses a die, and the caller starts the next round. |
| Exact call wrong | Standard Liar's DiceThe caller loses a die and starts the next round. | CalzaUnchanged: the caller loses a die and starts the next round. |
| Winning dice back | Standard Liar's DiceDice are only ever lost. | CalzaA right Calza wins a die back, but never above the number of dice each player started with. |
| Other options | Standard Liar's DicePalifico, no wild ones and three to six dice each can be chosen. | CalzaCalza works with all of them. A player who wins a die back and drops to one die again gets no second Palifico round. |
History
Liar's dice is a family of bluffing games rather than one fixed set of rules. In South America it is known as Dudo, Spanish for "I doubt", the word a player says to challenge a bid.
Calza is the exact call in the published rules of its commercial edition: a player who believes the last bid is exactly right calls calza, and the dice are revealed. If the count is exact, the caller wins back a die they had lost; if not, the caller loses a die. In those rules the call does not have to wait for the caller's turn, although the player who made the bid cannot call it. Here every move is made in turn, so you call Calza on your own turn, in place of a raise or a challenge. It replaces the standard game's harsher Spot On, where a right call costs every other player a die.