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% This is a skak version of the tugame.ltx which Piet Tutelaers made
% to show how the original chess package could be used.
% I have changed it to use the skak package commands as a
% demonstration of how to use the skak package.
% Author: Torben Hoffmann
%
% Change history
% --------------
% Version Comments
% 1.0 Initial version adapted to the skak package.
% The original comments follows below
%===================================================================
%
% TUGgame.ltx
% -----------
% LaTeX source of example in TUGboat article (part of the game Fisher
% lost against Tal), input'ted by TUGboat.ltx.
% Author : Piet Tutelaers (internet: rcpt@urc.tue.nl)
% Version: 1.2 ( 8 Jun 1991)
% Reflects changes in chess.sty version 1.2
% Version: 1.1 (30 Nov 1990)
% Improvements over version 1.0:
% - two typos corrected, thanks Hugo
%===================================================================
\documentclass[10pt]{article}
\usepackage[ps,mover,styleC]{skak}
\usepackage[final]{showexpl}
\usepackage{a4wide}
\makeatletter
%% to get showexpl to respekt empty lines
%% this corrects a bug in showexpl as long
%% as the new version isn't there
\renewcommand*\SX@resultInput{%
%%\MakePercentComment\catcode`\^^M=10\relax
\SX@@preset\SX@preset
\if@SX@rangeaccept
\let\@tempa=\SX@input% Nur sinnvoll bei \LTXinputExample
\else
\let\@tempa=\input
\fi
\@tempa{\SX@codefile}%
\MakePercentIgnore}
\makeatother
\lstset{width=0.5} % wider examples
\lstset{preset=\raggedright}
\title{Example of the LaTeX-input and output of an annotated
chess game using \texttt{skak.sty}}
\author{Torben Hoffmann}
\begin{document}
\parindent=0pt
\maketitle
\begin{LTXexample}
\fenboard{1q3kr1/3rb2p/p3Q3/8/1p6/8/%
PPP3PP/4R2K w - - 0 26}
$$\showboard$$
Fischer--Tal after \movecomment{25... Kf8!}
\mainline{26. Qxd7}
Not \variation{26. Rf1+ Kg7 27. Rf7+ Kh8} and if
\continuevariationcurrent{28. Qxd7 Rd8 29. Qg4 Qe5} wins.
\mainline{26...Qd6 27. Qb7 Rg6}
Within a handful of moves the game has changed its complexion.
Now it is White who must fight for a draw!
\mainline{28. c3}
Black's extra piece means less with each pawn that's exchanged.
\mainline{28...a5}
On \variation{28...bxc3 29. Qc8+ Bd8 30. Qxc3}=.
\end{LTXexample}
\begin{LTXexample}
\storegame{mainline}
\mainline{29. Qc8+}
On the wrong track. Right is \variation{29. cxb4 Qxb4} (if
\continuevariation{29... axb4 30. a3! bxa3 31. bxa3 Qxa3}
draws)
\restoregame{mainline} \hidemoves{29. cxb4 Qxb4}
\variationcurrent{30. Qf3+ Kg7 31. Qe2} draws,
since Black can't possibly build up a winning K-side
attack and his own king is to exposed.
\restoregame{mainline} \hidemoves{29. Qc8+}
\mainline{29...Kg7 30. Qc4 Bd8 31. cxb4 axb4}
On \variation{31... Qxb4 32. Qe2}
White should draw with best play.
$$\showboard$$
\end{LTXexample}
\end{document}
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