\magnification=1200
\hsize=4in
\overfullrule=0pt
\input amssym
%\def\frac2{{#1\over #2}}
\def\emph#1{{\it #1}}
\def\em{\it}
\nopagenumbers
\noindent
%
%
{\bf Johan W\"astlund }
%
%
\medskip
\noindent
%
%
{\bf Two-Person Symmetric Whist}
%
%
\vskip 5mm
\noindent
%
%
%
%
We introduce a two-person perfect information model of trick taking
games. A set of cards is distributed between two players, and play
proceeds in tricks with the obligation to follow suit, as in many
real-world card games.

We assume that in each suit, the two players have the same number of
cards. Under this assumption, we show how to assign a value from a
certain semigroup to each single-suit card distribution in such a way
that the outcome of a multi-suit deal under optimal play is determined
by the sum of the values of the individual suits.  

\bye

.
