Added jump chess warm-up

Misc/Warm-Ups/jump chess.tex

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+\documentclass[
+	solutions,
+	hidewarning,
+	singlenumbering,
+	nopagenumber
+]{../../resources/ormc_handout}
+
+\usepackage{chessboard}
+\usepackage{xskak}
+
+\title{Warm Up: Jump Chess}
+\subtitle{Prepared by Mark on \today}
+
+
+\begin{document}
+
+	\maketitle
+
+	Consider a normal game of chess with the following modification:
+	we allow queens and rooks to jump as far across the board as they want,
+	within their usual range of movement.
+	As a result, queens and rooks may check the opposing
+	king from a distance, ignoring any pieces in between.
+
+	\vspace{2mm}
+	
+	With these modified rules, the outcome of a game can be determined. \par
+	Who wins, or do black and white draw with ideal play? \par
+	(As in regulation chess, white moves first.)
+
+	\begin{center}
+		\newchessgame
+		\chessboard[normalboard,showmover=false]
+	\end{center}
+
+	\begin{solution}
+		Win for white in 5 moves.
+
+		\vspace{2mm}
+
+		Trap black in the top row. If Black is kept in check
+		every move, his ability to respond is limited and the game tree
+		remains small.
+
+		\vspace{2mm}
+
+		Capture an opposing rook with Rxa8+.
+		The king is in check and can't move, so black must capture this rook.
+		If black recaptures with his other rook, respond with Qh5\#.
+
+		Otherwise, black must recapture Qxa8. Now go Qa4+.
+		If black captures with his queen Qxa4, then Rxh8\#.
+		So, black must move Kd8.
+
+		\vspace{2mm}
+
+		Finish with the following: \par
+		Qd4+ Ke8 \par
+		Rxh8+ Qxh8 \par
+		Qxh8\#
+
+	\end{solution}
+
+\end{document}