revert css changes

[xboard.git] / whats_new / rules / Xiangqi.html

<!--#include virtual="/server/html5-header.html" -->
  <title>Xiangqi</title>
  <link rel="StyleSheet" href="./moves.css" type="text/css">
  <script type="text/javascript" src="spartan.js">
</script>
<!--#include virtual="/server/banner.html" -->
<!--#set var="article_name" value="/server/standards/boilerplate" -->
<!--#include virtual="/server/gnun/initial-translations-list.html" -->

  <h1>Xiangqi (Chinese Chess)</h1>

  <p>Xiangqi is the World's number one Chess variant in terms of
  number of players. Almost all players live in China, Taiwan or
  Vietnam, though. It is a fast and aggressive game, often
  described as a 'race to mate'. When it gets to an end-game it is
  often a draw, because there are many pieces that cannot leave
  their own board half, and thus can be used to defend but not to
  attack or to trade for the opponent's defenders.</p>

  <table cellpadding="20">
    <tr>
      <td><img src="Xiangqi.png"></td>

      <td>
        <h3>Initial setup</h3>

        <p>e0, e9: King<br>
        a0, a9, i0, i9: Rook<br>
        b2, b7, h2, h7: Cannon<br>
        b0, b9, h0, h9: Horse<br>
        d0, d9, f0, f9: Advisor<br>
        c0, c9, g0, g9: Elephant<br>
        a3, c3, e3, g3, i3, a6, c6, e6, g6, i6: Pawns</p>
      </td>
    </tr>
  </table>

  <h3>Moves at a Glance</h3>

  <p>Click on a white piece below to see its moves</p>

  <table class="board">
    <tr>
      <td class="n" id="sq0x9" onmousedown="down_click(,)" onmouseup=
      "up_click(,)"></td>

      <td class="n" id="sq1x9"></td>

      <td class="n" id="sq2x9"></td>

      <td class="n" id="sq3x9"></td>

      <td class="n" id="sq4x9"></td>

      <td class="n" id="sq5x9"></td>

      <td class="n" id="sq6x9"></td>

      <td class="n" id="sq7x9"><img src="sym/BlackRook.png"></td>

      <td class="n" id="sq8x9"></td>

      <td class="n" id="sq9x9"></td>

      <td class="h"><img src="sym/yellow.png"></td>

      <td class="w" rowspan="2" valign="top">
        <p>Sliding capture or non-capture,<br>
        can be blocked on any square along the ray</p>
      </td>
    </tr>

    <tr>
      <td class="n" id="sq0x8"></td>

      <td class="n" id="sq1x8"></td>

      <td class="n" id="sq2x8"></td>

      <td class="n" id="sq3x8"></td>

      <td class="n" id="sq4x8"></td>

      <td class="n" id="sq5x8"></td>

      <td class="n" id="sq6x8"></td>

      <td class="n" id="sq7x8"></td>

      <td class="n" id="sq8x8"></td>

      <td class="n" id="sq9x8"></td>
    </tr>

    <tr>
      <td class="n" id="sq0x7"></td>

      <td class="n" id="sq1x7"></td>

      <td class="n" id="sq2x7"></td>

      <td class="n" id="sq3x7"></td>

      <td class="n" id="sq4x7"></td>

      <td class="n" id="sq5x7"></td>

      <td class="n" id="sq6x7"></td>

      <td class="n" id="sq7x7"></td>

      <td class="n" id="sq8x7"></td>

      <td class="n" id="sq9x7"></td>

      <td class="h"><img src="sym/green.png"></td>

      <td class="w">Non-capture only</td>
    </tr>

    <tr>
      <td class="n" id="sq0x6"></td>

      <td class="n" id="sq1x6"></td>

      <td class="n" id="sq2x6"></td>

      <td class="n" id="sq3x6"></td>

      <td class="n" id="sq4x6"></td>

      <td class="n" id="sq5x6"></td>

      <td class="n" id="sq6x6"></td>

      <td class="n" id="sq7x6"><img src="sym/BlackKnight.png"></td>

      <td class="n" id="sq8x6"></td>

      <td class="n" id="sq9x6"></td>

      <td class="h"><img src="sym/red.png"></td>

      <td class="w">Capture only</td>
    </tr>

    <tr>
      <td class="n" id="sq0x5"></td>

      <td class="n" id="sq1x5"></td>

      <td class="n" id="sq2x5" onmousedown="down_click(2,5)"
      onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>

      <td class="n" id="sq3x5"></td>

      <td class="n" id="sq4x5" onmousedown="down_click(-4,5)"
      onmouseup="up_click()"><img src="sym/WhiteAdvisor.png"></td>

      <td class="n" id="sq5x5" onmousedown="down_click(5,-5)"
      onmouseup="up_click()"><img src="sym/WhiteElephant.png"></td>

      <td class="n" id="sq6x5" onmousedown="down_click(6,-5)"
      onmouseup="up_click()"><img src="sym/WhiteGold.png"></td>

      <td class="n" id="sq7x5"></td>

      <td class="n" id="sq8x5"></td>

      <td class="n" id="sq9x5"></td>

      <td class="h"><img src="sym/open.png"></td>

      <td class="w" rowspan="2" valign="top">Unreachable square
      where move to other square can be blocked</td>
    </tr>

    <tr>
      <td class="n" id="sq0x4"></td>

      <td class="n" id="sq1x4"></td>

      <td class="n" id="sq2x4"></td>

      <td class="n" id="sq3x4" onmousedown="down_click(3,0)"
      onmouseup="up_click()"></td>

      <td class="n" id="sq4x4" onmousedown="down_click(4,0)"
      onmouseup="up_click()"></td>

      <td class="n" id="sq5x4" onmousedown="down_click(5,0)"
      onmouseup="up_click()"></td>

      <td class="n" id="sq6x4"></td>

      <td class="n" id="sq7x4" onmousedown="down_click(7,4)"
      onmouseup="up_click()"></td>

      <td class="n" id="sq8x4"></td>

      <td class="n" id="sq9x4"></td>
    </tr>

    <tr>
      <td class="n" id="sq0x3"></td>

      <td class="n" id="sq1x3"></td>

      <td class="n" id="sq2x3"></td>

      <td class="n" id="sq3x3" onmousedown="down_click(3,3)"
      onmouseup="up_click()"><img src="sym/WhiteRook.png"></td>

      <td class="n" id="sq4x3" onmousedown="down_click(-4,3)"
      onmouseup="up_click()"><img src="sym/WhiteKnight.png"></td>

      <td class="n" id="sq5x3"></td>

      <td class="n" id="sq6x3"></td>

      <td class="n" id="sq7x3"></td>

      <td class="n" id="sq8x3"></td>

      <td class="n" id="sq9x3"></td>
    </tr>

    <tr>
      <td class="n" id="sq0x2"></td>

      <td class="n" id="sq1x2"><img src="sym/BlackRook.png"></td>

      <td class="n" id="sq2x2" onmousedown="down_click(2,2)"
      onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>

      <td class="n" id="sq3x2"></td>

      <td class="n" id="sq4x2"></td>

      <td class="n" id="sq5x2"></td>

      <td class="n" id="sq6x2"></td>

      <td class="n" id="sq7x2" onmousedown="down_click(7,2)"
      onmouseup="up_click()"><img src="sym/WhiteCanon.png"></td>

      <td class="n" id="sq8x2"></td>

      <td class="n" id="sq9x2"></td>
    </tr>

    <tr>
      <td class="n" id="sq0x1"></td>

      <td class="n" id="sq1x1"></td>

      <td class="n" id="sq2x1"></td>

      <td class="n" id="sq3x1"></td>

      <td class="n" id="sq4x1"></td>

      <td class="n" id="sq5x1"></td>

      <td class="n" id="sq6x1"></td>

      <td class="n" id="sq7x1"></td>

      <td class="n" id="sq8x1"></td>

      <td class="n" id="sq9x1"></td>
    </tr>

    <tr>
      <td class="n" id="sq0x0"></td>

      <td class="n" id="sq1x0"></td>

      <td class="n" id="sq2x0"></td>

      <td class="n" id="sq3x0"></td>

      <td class="n" id="sq4x0"></td>

      <td class="n" id="sq5x0"></td>

      <td class="n" id="sq6x0"></td>

      <td class="n" id="sq7x0"></td>

      <td class="n" id="sq8x0"></td>

      <td class="n" id="sq9x0"></td>
    </tr>
  </table>

  <p id="piece" height="20">:<br>
  :<br>
  :<br>
  :</p>

  <table cellpadding="5" border="1">
    <tr>
      <td>Piece</td>

      <td>ID</td>

      <td>value</td>

      <td>Moves (<a href="Betza.html">Betza notation</a>)</td>

      <td>Remarks</td>
    </tr>

    <tr>
      <td>King</td>

      <td>K</td>

      <td>-</td>

      <td>W</td>

      <td>Cannot leave its Palace</td>
    </tr>

    <tr>
      <td>Rook</td>

      <td>R</td>

      <td>10</td>

      <td>R</td>

      <td></td>
    </tr>

    <tr>
      <td>Cannon</td>

      <td>C</td>

      <td>4-5</td>

      <td>pR</td>

      <td>Must jump 1 piece to capture</td>
    </tr>

    <tr>
      <td>Horse</td>

      <td>H</td>

      <td>5-4</td>

      <td>n[WF]</td>

      <td>Cannot jump</td>
    </tr>

    <tr>
      <td>Adviser</td>

      <td>A</td>

      <td>2</td>

      <td>F</td>

      <td></td>
    </tr>

    <tr>
      <td>Elephant</td>

      <td>E</td>

      <td>2</td>

      <td>nA</td>

      <td>Cannot move onto opponent's board half</td>
    </tr>

    <tr>
      <td>Pawn</td>

      <td>P</td>

      <td>1</td>

      <td>fW</td>

      <td>Acquires sideway moves (fWsW) on opponent's board
      half</td>
    </tr>
  </table>

  <h3>Pawn peculiarities</h3>

  <ul>
    <li>Pawns capture and move straight ahead.</li>

    <li>When they reach the opponent's board half ('cross the
    River'), they can also move and capture sideways.</li>

    <li>There is no real promotion; when Pawns reach last rank they
    are stuck there.</li>
  </ul>

  <h3>General rules</h3>

  <ul>
    <li>It is not allowed to expose your King to check.</li>

    <li>Kings are not allowed to face each other, i.e. be on the
    same file with nothing in between.</li>

    <li>The game is won by checkmating the opponent's King.</li>

    <li>Stalemate (no legal moves, but not in check) is a los for
    the stalemated side.</li>

    <li>Perpetual checking is forbidden, and the side that checks
    is ruled to lose on the 3rd repeat.</li>

    <li>When both sides are perpetually checking each other, the
    game is ruled a draw, however.</li>

    <li>It is also forbidden to perpetually harass the same piece
    other than King (see below).</li>

    <li>But when both sides do it, the game is again ruled a
    draw.</li>
  </ul>

  <h3>Differences with FIDE</h3>

  <p>The board is sub-divided into zones, and some pieces are not
  allowed to cross some zone boundaries. Pieces move in general
  different than their FIDE counterpart. Only the Rook moves truly
  the same.</p>

  <h3>Perpetual Chasing</h3>

  <p>It is forbidden to perpetually harass the same piece, and when
  a repeat loop (after 3 repeats) has one side violating this rule,
  that side will forfeit the game. This is only invoked if there
  wasn't any perpetual checking in the loop as well. Exact rules
  for this are quite complex. Basically, when a repeat loop creates
  a <i>new</i> attack on the same <i>unprotected</i> piece on
  <i>every</i> move, the move sequence will be considered a
  perpetual chase. The chasing side then is ruled to lose, but if
  both sides are chasing, it is a draw. A Rook counts as
  unprotected against attacks of C or H. On the other hand, being
  able to capture your attacker (as when equal pieces attack each
  other) counts as (pre-emptive) protection. Attacks on a Pawn that
  is still on its own board half, or attacks by a King are never
  considered chases.</p>

  <p>Only legal moves should be taken into account; i.e. pinned
  pieces are not considered attackers or protectors. An attack by
  the same piece is not considered a new one just because the
  attacking piece moved to another location, e.g. when a Rook moves
  along the ray of the attack. Note that the above rules do not
  take into account whether the attacking or protecting captures
  are good or non-sensical, or if pieces are <i>sufficiently</i>
  protected against multiple attacks. Even if recapturing would get
  you mated in one, the piece would still count as protected! Also
  note that is perfectly allowed to alternately chase different
  pieces. Even if one of the pieces is a King.</p>

  <h3>Strategy issues</h3>

  <p>Any piece except a Pawn on the last rank can force Checkmate
  against a bare King.</p>
</div><!-- for id="content", starts in the include above -->
<!--#include virtual="/server/footer.html" -->
</body>
</html>