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<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"/><title>1.14 Gobblet --- Strategy Game</title><link rel="stylesheet" type="text/css" href="../scribble.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-style.css" title="default"/><link rel="stylesheet" type="text/css" href="../manual-racket.css" title="default"/><link rel="stylesheet" type="text/css" href="../doc-site.css" title="default"/><script type="text/javascript" src="../scribble-common.js"></script><script type="text/javascript" src="../manual-racket.js"></script><script type="text/javascript" src="../doc-site.js"></script><script type="text/javascript" src="../local-redirect/local-redirect.js"></script><script type="text/javascript" src="../local-redirect/local-user-redirect.js"></script><!--[if IE 6]><style type="text/css">.SIEHidden { overflow: hidden; }</style><![endif]--></head><body id="doc-racket-lang-org"><div class="tocset"><div class="tocview"><div class="tocviewlist tocviewlisttopspace"><div class="tocviewtitle"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,"tocview_0");">►</a></td><td></td><td><a href="index.html" class="tocviewlink" data-pltdoc="x">Games:<span class="mywbr"> </span> Fun Examples</a></td></tr></table></div><div class="tocviewsublisttop" style="display: none;" id="tocview_0"><table cellspacing="0" cellpadding="0"><tr><td align="right">1 </td><td><a href="bundled.html" class="tocviewselflink" data-pltdoc="x">Bundled Games</a></td></tr><tr><td align="right">2 </td><td><a href="new-games.html" class="tocviewlink" data-pltdoc="x">Implementing New Games</a></td></tr><tr><td align="right">3 </td><td><a href="Showing_Scribbled_Help.html" class="tocviewlink" data-pltdoc="x">Showing Scribbled Help</a></td></tr><tr><td align="right">4 </td><td><a href="Showing_Text_Help.html" class="tocviewlink" data-pltdoc="x">Showing Text Help</a></td></tr></table></div></div><div class="tocviewlist"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,"tocview_1");">▼</a></td><td>1 </td><td><a href="bundled.html" class="tocviewlink" data-pltdoc="x">Bundled Games</a></td></tr></table><div class="tocviewsublist" style="display: block;" id="tocview_1"><table cellspacing="0" cellpadding="0"><tr><td align="right">1.1 </td><td><a href="aces.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="aces.png" alt="" width="24" height="32"/></span> <span class="ssansserif">Aces</span> —<wbr></wbr> Solitaire Card Game</a></td></tr><tr><td align="right">1.2 </td><td><a href="gofish.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="gofish.png" alt="" width="28" height="32"/></span> <span class="ssansserif">Go Fish</span> —<wbr></wbr> Kid’s Card Game</a></td></tr><tr><td align="right">1.3 </td><td><a href="crazy8s.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="crazy8s.png" alt="" width="24" height="32"/></span> <span class="ssansserif">Crazy 8s</span> —<wbr></wbr> Card Game</a></td></tr><tr><td align="right">1.4 </td><td><a href="blackjack.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="blackjack.png" alt="" width="28" height="32"/></span> <span class="ssansserif">Blackjack</span> —<wbr></wbr> 21 Card Game</a></td></tr><tr><td align="right">1.5 </td><td><a href="ginrummy.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="ginrummy.png" alt="" width="28" height="32"/></span> <span class="ssansserif">Rummy</span> —<wbr></wbr> Card Game</a></td></tr><tr><td align="right">1.6 </td><td><a href="spider.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="spider.png" alt="" width="24" height="32"/></span> <span class="ssansserif">Spider</span> —<wbr></wbr> Solitaire Card Game</a></td></tr><tr><td align="right">1.7 </td><td><a href="memory.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="memory.png" alt="" width="26" height="32"/></span> <span class="ssansserif">Memory</span> —<wbr></wbr> Kid’s Game</a></td></tr><tr><td align="right">1.8 </td><td><a href="slidey.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="slidey.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Slidey</span> —<wbr></wbr> Picture Puzzle</a></td></tr><tr><td align="right">1.9 </td><td><a href="same.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="same.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Same</span> —<wbr></wbr> Dot-<wbr></wbr>Removing Game</a></td></tr><tr><td align="right">1.10 </td><td><a href="mines.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="mines.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Minesweeper</span> —<wbr></wbr> Logic Game</a></td></tr><tr><td align="right">1.11 </td><td><a href="paint-by-numbers.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="paint-by-numbers.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Paint By Numbers</span> —<wbr></wbr> Logic Game</a></td></tr><tr><td align="right">1.12 </td><td><a href="lights-out.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="lights-out.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Lights Out</span> —<wbr></wbr> Logic Game</a></td></tr><tr><td align="right">1.13 </td><td><a href="pousse.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="pousse.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Pousse</span> —<wbr></wbr> Tic-<wbr></wbr>Tac-<wbr></wbr>Toe-<wbr></wbr>like Game</a></td></tr><tr><td align="right">1.14 </td><td><a href="" class="tocviewselflink" data-pltdoc="x"><span class="noborder"><img src="gobblet.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Gobblet</span> —<wbr></wbr> Strategy Game</a></td></tr><tr><td align="right">1.15 </td><td><a href="jewel.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="jewel.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Jewel</span> —<wbr></wbr> 3-<wbr></wbr>D Skill Game</a></td></tr><tr><td align="right">1.16 </td><td><a href="parcheesi.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="parcheesi.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Parcheesi</span> —<wbr></wbr> Board Game</a></td></tr><tr><td align="right">1.17 </td><td><a href="checkers.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="checkers.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Checkers</span> —<wbr></wbr> Board Game</a></td></tr><tr><td align="right">1.18 </td><td><a href="chat-noir.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="chat-noir.png" alt="" width="40" height="19"/></span> <span class="ssansserif">Chat Noir</span> —<wbr></wbr> Puzzle Game</a></td></tr><tr><td align="right">1.19 </td><td><a href="tally-maze.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="tally-maze.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Tally Maze</span> —<wbr></wbr> Maze Enumeration Game</a></td></tr><tr><td align="right">1.20 </td><td><a href="gcalc.html" class="tocviewlink" data-pltdoc="x"><span class="noborder"><img src="gcalc.png" alt="" width="32" height="32"/></span> <span class="ssansserif">GCalc</span> —<wbr></wbr> Visual λ-<wbr></wbr>Calculus</a></td></tr></table></div></div><div class="tocviewlist"><table cellspacing="0" cellpadding="0"><tr><td style="width: 1em;"><a href="javascript:void(0);" title="Expand/Collapse" class="tocviewtoggle" onclick="TocviewToggle(this,"tocview_2");">►</a></td><td>1.14 </td><td><a href="" class="tocviewselflink" data-pltdoc="x"><span class="noborder"><img src="gobblet.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Gobblet</span> —<wbr></wbr> Strategy Game</a></td></tr></table><div class="tocviewsublistbottom" style="display: none;" id="tocview_2"><table cellspacing="0" cellpadding="0"><tr><td align="right">1.14.1 </td><td><a href="#%28part._.Game_.Rules%29" class="tocviewlink" data-pltdoc="x">Game Rules</a></td></tr><tr><td align="right">1.14.2 </td><td><a href="#%28part._.Controls%29" class="tocviewlink" data-pltdoc="x">Controls</a></td></tr><tr><td align="right">1.14.3 </td><td><a href="#%28part._.Auto-.Play%29" class="tocviewlink" data-pltdoc="x">Auto-<wbr></wbr>Play</a></td></tr></table></div></div></div><div class="tocsub"><div class="tocsubtitle">On this page:</div><table class="tocsublist" cellspacing="0"><tr><td><span class="tocsublinknumber">1.14.1<tt> </tt></span><a href="#%28part._.Game_.Rules%29" class="tocsubseclink" data-pltdoc="x">Game Rules</a></td></tr><tr><td><span class="tocsublinknumber">1.14.2<tt> </tt></span><a href="#%28part._.Controls%29" class="tocsubseclink" data-pltdoc="x">Controls</a></td></tr><tr><td><span class="tocsublinknumber">1.14.3<tt> </tt></span><a href="#%28part._.Auto-.Play%29" class="tocsubseclink" data-pltdoc="x">Auto-<wbr></wbr>Play</a></td></tr></table></div></div><div class="maincolumn"><div class="main"><div class="navsettop"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.1", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> <a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot("6.1");">top</a></span><span class="navright"> <a href="pousse.html" title="backward to "1.13 Pousse --- Tic-Tac-Toe-like Game"" data-pltdoc="x">← prev</a> <a href="bundled.html" title="up to "1 Bundled Games"" data-pltdoc="x">up</a> <a href="jewel.html" title="forward to "1.15 Jewel --- 3-D Skill Game"" data-pltdoc="x">next →</a></span> </div><h4 x-source-module="(lib "games/scribblings/games.scrbl")" x-part-tag=""gobblet"">1.14<tt> </tt><a name="(part._gobblet)"></a><span class="noborder"><img src="gobblet.png" alt="" width="32" height="32"/></span> <span class="ssansserif">Gobblet</span> —<wbr></wbr> Strategy Game</h4><blockquote class="refpara"><blockquote class="refcolumn"><blockquote class="refcontent"><p>To play <span class="ssansserif">Gobblet</span>, run the <span class="stt">PLT Games</span> program. (Under Unix, it’s called <span class="stt">plt-games</span>).</p></blockquote></blockquote></blockquote><p><span style="font-weight: bold">Gobblet!</span> is a board game from Blue Orange Games:</p><blockquote class="SCentered"><p><a href="http://www.blueorangegames.com/"><span class="stt">http://www.blueorangegames.com/</span></a></p></blockquote><p>Our 3x3 version actually corresponds to <span style="font-weight: bold">Gobblet! Jr.</span>, while
the 4x4 version matches <span class="ssansserif">Gobblet!</span>.</p><p>The Blue Orange web site provides rules for <span style="font-weight: bold">Gobblet! Jr.</span> and
<span style="font-weight: bold">Gobblet!</span>. The rules below are in our own words; see also the
Blue Orange version.</p><h5 x-source-module="(lib "games/scribblings/games.scrbl")" x-part-tag=""Game_Rules"">1.14.1<tt> </tt><a name="(part._.Game_.Rules)"></a>Game Rules</h5><p>The 3x3 game is a generalization of tic-tac-toe:</p><ul><li><p>The object of the game is to get three in a row of your color,
vertically, horizontally, or diagonally. Size doesn’t matter for
determining a winner.</p></li><li><p>Each player (red or yellow) starts with 6 pieces: two large,
two medium, and two small.</p></li><li><p>On each turn, a player can either place a new piece on the
board, or move a piece already on the board—<wbr></wbr>from anywhere to
anywhere, as long as the “from” and “to” are different.</p></li><li><p>A piece can be placed (or moved to) an empty space, or it can
be placed/moved on top of a smaller piece already on the board,
“gobbling” the smaller piece. The smaller piece does not have to
be an opponent’s piece, and the smaller piece may itself have
gobbled another piece previously.</p></li><li><p>Only visible pieces can be moved, and only visible pieces count
toward winning. Gobbled pieces stay on the board, however, and
when a piece is moved, any piece that it gobbled stays put and
becomes visible.</p></li><li><p>If moving a piece exposes a winning sequence for the opponent, and
if the destination for the move does not cover up one of the other
pieces in the sequence, then the opponent wins—<wbr></wbr>even if the move
makes a winning sequence for the moving player.</p></li><li><p>Technically, if a player touches a piece, then the piece must
be moved on that turn. In other words, you’re not allowed to peek
under a piece to remind yourself whether it gobbled anything. If
the piece can’t be moved, the player forfeits. This particular
rule is not enforced by our version —<wbr></wbr> in part because our version
supports a rewind button, which is also not in the official game.</p></li></ul><p>The 4x4 game has a few changes:</p><ul><li><p>The object of the game is to get four in a row of your color.</p></li><li><p>Each player (red or yellow) starts with 12 pieces: three large,
three medium-large, three medium-small, and three small.</p></li><li><p>Each player’s pieces are initially arranged into three stacks
off the board, and only visible pieces can be moved onto the board.
The initial stacks prevent playing a smaller piece before a
corresponding larger piece.</p></li><li><p>When a piece is moved from off-board onto the board, it must be
moved to either (1) an empty space, or (2) a space to gobble an
opponent’s piece that is part of three in a row (for the opponent).
In other words, a new piece can gobble only an opponent’s piece,
and only to prevent an immediate win on the opponent’s next turn.
These restrictions do not apply when a piece that is already on the
board is moved.</p></li></ul><h5 x-source-module="(lib "games/scribblings/games.scrbl")" x-part-tag=""Controls"">1.14.2<tt> </tt><a name="(part._.Controls)"></a>Controls</h5><p>Click and drag pieces in the obvious way to take a turn. The shadow
under a piece shows where it will land when you drop it.</p><p>Use the arrow keys on your keyboard to rotate the board. Use the
<span class="ssansserif">-</span> and <span class="ssansserif">=</span> keys to zoom in and out. Use
<span class="ssansserif">_</span> and <span class="ssansserif">+</span> to make the game smaller and larger.
(Changing the size adjusts perspective in a slightly different way
than zooming.) Depending on how keyboard focus works on your machine,
you may have to click the board area to make these controls work.</p><p>The button labeled <span class="ssansserif"><</span> at the bottom of the window rewinds
the game by one turn. The button labeled <span class="ssansserif">></span> re-plays one
turn in a rewound game. An alternate move can be made at any point in
a rewound game, replacing the old game from that point on.</p><h5 x-source-module="(lib "games/scribblings/games.scrbl")" x-part-tag=""Auto-Play"">1.14.3<tt> </tt><a name="(part._.Auto-.Play)"></a>Auto-Play</h5><p>Turn on a computer player at any time by checking the
<span class="ssansserif">Auto-Play Red</span> or <span class="ssansserif">Auto-Play Yellow</span> checkbox. If
you rewind the game, you can choose an alternate move for yourself or
for the auto-player to find out what would have happened. The
auto-player is not always deterministic, so replying the same move
might lead to a different result. You can disable an auto-player at
any point by unchecking the corresponding
<span class="ssansserif">Auto-Play"</span>checkbox.</p><p>Important: In the 3x3 game, you <span style="font-style: italic">cannot</span> win as yellow against
the smart auto-player (if the auto-player is allowed to play red from
the start of the game). In other words, red has a forced win in the
3x3 game, and the smart auto-player knows the path to victory. You
might have a chance to beat the red player in the default mode,
though, which is represented by the <span class="ssansserif">Ok</span> choice (instead of
<span class="ssansserif">Smart</span>) in the <span class="ssansserif">Auto-Play Options</span> dialog.</p><p>Configure the auto-player by clicking the <span class="ssansserif">Auto-Play Options</span>
button. Currently, there’s no difference between <span class="ssansserif">Smart</span> and
<span class="ssansserif">Ok</span> in the 4x4 game.</p><div class="navsetbottom"><span class="navleft"><form class="searchform"><input class="searchbox" style="color: #888;" type="text" value="...search manuals..." title="Enter a search string to search the manuals" onkeypress="return DoSearchKey(event, this, "6.1", "../");" onfocus="this.style.color="black"; this.style.textAlign="left"; if (this.value == "...search manuals...") this.value="";" onblur="if (this.value.match(/^ *$/)) { this.style.color="#888"; this.style.textAlign="center"; this.value="...search manuals..."; }"/></form> <a href="../index.html" title="up to the documentation top" data-pltdoc="x" onclick="return GotoPLTRoot("6.1");">top</a></span><span class="navright"> <a href="pousse.html" title="backward to "1.13 Pousse --- Tic-Tac-Toe-like Game"" data-pltdoc="x">← prev</a> <a href="bundled.html" title="up to "1 Bundled Games"" data-pltdoc="x">up</a> <a href="jewel.html" title="forward to "1.15 Jewel --- 3-D Skill Game"" data-pltdoc="x">next →</a></span> </div></div></div><div id="contextindicator"> </div></body></html>
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