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