Files
Landon Curt Noll a1c86c8a7a add original C links to entry navigation bars
The navigation bar for a winning entry now has a "_Original C_" link
(between the ✅ and the Inventory on the right hand side) so that one
may easily view the original C code that was submitted for IOCCC judging.

Ran `make www timestamp` to perform the above.
2025-08-10 12:46:23 -07:00

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<h1>The International Obfuscated C Code Contest</h1>
<h2>2006/meyer - Best game</h2>
<h3>A two player sudoku like game</h3>
</div>
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<div class="navbar">
<a class="Left" href="../hamre/index.html">&larr; 2006/hamre</a>
<a class="Left" href="../index.html">&uarr; 2006 &uarr;</a>
<a class="Left" href="../monge/index.html">2006/monge &rarr;</a>
<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2006/meyer/meyer.c">C code</a>
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<a class="Right" href="https://github.com/ioccc-src/winner/blob/master/2006/meyer/meyer.orig.c">Original C</a>
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<h2 id="author">Author:</h2>
<ul>
<li>Name: <a href="../../authors.html#Raphael_Meyer">Raphael Meyer</a><br>
Location: <a href="../../location.html#US">US</a> - <em>United States of America</em> (<em>United States</em>)</li>
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<h2 id="to-build">To build:</h2>
<pre><code> make</code></pre>
<h2 id="to-use">To use:</h2>
<pre><code> ./meyer [SEED]</code></pre>
<h2 id="try">Try:</h2>
<pre><code> ./meyer [SEED]</code></pre>
<p>For your first input try:</p>
<pre><code> a 0 1</code></pre>
<p>where <code>a</code> is the row (<code>a</code>-<code>i</code>), <code>0</code> is the column (<code>0</code>-<code>8</code>) and <code>1</code> is the
number (<code>1</code>-<code>9</code>).</p>
<p><strong>NOTE</strong>: if you do not input three different ‘words’ it will block. You can input
more text to fulfil the program’s requirements.</p>
<p><strong>NOTE</strong>: if your move is invalid it will prompt you again but not show the board.</p>
<h2 id="judges-remarks">Judges’ remarks:</h2>
<p>This entry turns a newspaper solitaire puzzle into a competition
with the computer to be the last one moving. The object of this
<a href="https://github.com/ioccc-src/winner/blob/master/2006/meyer/meyer.c">source code</a> is to determine the object of this <a href="https://github.com/ioccc-src/winner/blob/master/2006/meyer/meyer.c">source
code</a>! :-)</p>
<h2 id="authors-remarks">Author’s remarks:</h2>
<p>I wanted to submit a fully object-oriented entry to show that
object-orientated code:</p>
<ol type="1">
<li>is ridiculously bloated.</li>
<li>is unreadable.</li>
<li>isn’t ‘<code>WYWIWID</code>’ (‘what you write is what it does’) anymore.</li>
</ol>
<p>But I just totally failed. No, I didn’t fail in showing any of
the points above. Before I even had the chance to prove any of
these claims, (1) already brought me to my knees. The code got
so bloated up, that I missed the size limit by a few hundred
bytes. Therefore, I broke the only rule in this contest, I think
you shouldn’t break in any case: Rule Nr 2, The size of …</p>
<p>The degree of claim (2) actually depends on the compiler. As I
<em>manually</em> translated it from a generic object-oriented programming
language to C, it didn’t just end up unreadable, but awfully
messed up, i.e. obfuscated.</p>
<p>As it is already (pre)translated to C, you could also call it an
object-disoriented program.</p>
<p>Comparing this program to a potential object-oriented implementation,
it is obvious, that object-oriented code isn’t ‘<code>WYWIWID</code>’ (‘what
you write is what it does’). It may be tempting to think that</p>
<pre><code> Object o;</code></pre>
<p>might do something similar as</p>
<pre><code> struct not_an_object o;</code></pre>
<p>But this program reveals that it doesn’t. Even worse, this program only
reveals the tip of the iceberg, what kind of black magic is involved in
a simple declaration of an object.</p>
<p>A few things you can explore about object-orientation in this program
include:</p>
<ul>
<li>constructors (invoked by the new operator).</li>
<li>new operators (every class gets its own new operator at compile time).</li>
<li>virtual method tables (all the virtual method tables have been combined to a
single <a href="https://en.wikipedia.org/wiki/Virtual_method_table">vtable</a> table).</li>
<li>runtime method binding.</li>
<li><a href="https://en.wikipedia.org/wiki/Inheritance_(object-oriented_programming)">inheritance</a>
and <a href="https://en.wikipedia.org/wiki/Polymorphism_(computer_science)">polymorphism</a>.</li>
</ul>
<p>It is left as an exercise to the reader to find a corresponding
implementation in a popular object-oriented programming language.</p>
<h3 id="starting-the-game">Starting the game</h3>
<pre><code> ./meyer [SEED]</code></pre>
<h3 id="gameplay">Gameplay</h3>
<p>It is a <a href="https://en.wikipedia.org/wiki/Sudoku">sudoku</a> based game. The goal of
the game is to be able to do the last valid ‘move’.</p>
<p>On your turn you have to set a free cell to a value between 1 to 9 without
breaking the following rule. Any number must be unique in its:</p>
<ol type="1">
<li>row</li>
<li>column</li>
<li>3x3 block.</li>
</ol>
<p>Expected input for your move:</p>
<pre><code> row column number</code></pre>
<p>where</p>
<pre><code> row: [a-i]
column: [0-8]
number: [1-9].</code></pre>
<p>The game can be aborted with <code>q</code>.</p>
<p>The one who can do the last move wins the game.</p>
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