run tidy over html files; added include for gnu pages
[xboard.git] / whats_new / rules / Courier.html
1 <!--#include virtual="/server/html5-header.html" -->
2   <title>Courier Chess</title>
3   <link rel="StyleSheet" href="./moves.css" type="text/css">
4   <script type="text/javascript" src="spartan.js">
5 </script>
6 <!--#include virtual="/server/banner.html" -->
7 <!--#set var="article_name" value="/server/standards/boilerplate" -->
8 <!--#include virtual="/server/gnun/initial-translations-list.html" -->
9
10   <h1>Courier Chess (a medieval precursor of modern Chess)</h1>
11
12   <table cellpadding="20">
13     <tr>
14       <td><img src="Courier.png"></td>
15
16       <td>
17         <h3>Initial setup</h3>
18
19         <p>f1, f8: King<br>
20         a1, a8, l1, l8: Rook<br>
21         d1, d8, i1, i8: Courier (Bishop)<br>
22         b1, b8, k1, k8: Knight<br>
23         e1, e8: Commonner<br>
24         g1, g8: Ferz (General)<br>
25         h1, h8: Wazir (Grand Visor)<br>
26         c1, c8, j1, j8: Alfil (Elephant)<br>
27         a2-l2, a7-l7: Pawns</p>
28       </td>
29     </tr>
30   </table>
31
32   <h3>Moves at a Glance</h3>
33
34   <p>Click on a piece below to see its moves</p>
35
36   <table class="board">
37     <tr>
38       <td class="n" id="sq0x9"></td>
39
40       <td class="n" id="sq1x9"></td>
41
42       <td class="n" id="sq2x9"></td>
43
44       <td class="n" id="sq3x9"></td>
45
46       <td class="n" id="sq4x9"></td>
47
48       <td class="n" id="sq5x9"></td>
49
50       <td class="n" id="sq6x9"></td>
51
52       <td class="n" id="sq7x9"></td>
53
54       <td class="n" id="sq8x9"></td>
55
56       <td class="n" id="sq9x9"></td>
57
58       <td class="h"><img src="sym/yellow.png"></td>
59
60       <td class="w" rowspan="2" valign="top">
61         <p>Sliding capture or non-capture,<br>
62         can be blocked on any square along the ray</p>
63       </td>
64     </tr>
65
66     <tr>
67       <td class="n" id="sq0x8"></td>
68
69       <td class="n" id="sq1x8"></td>
70
71       <td class="n" id="sq2x8"></td>
72
73       <td class="n" id="sq3x8"></td>
74
75       <td class="n" id="sq4x8"></td>
76
77       <td class="n" id="sq5x8"></td>
78
79       <td class="n" id="sq6x8"></td>
80
81       <td class="n" id="sq7x8"></td>
82
83       <td class="n" id="sq8x8"></td>
84
85       <td class="n" id="sq9x8"></td>
86     </tr>
87
88     <tr>
89       <td class="n" id="sq0x7"></td>
90
91       <td class="n" id="sq1x7"></td>
92
93       <td class="n" id="sq2x7"></td>
94
95       <td class="n" id="sq3x7"></td>
96
97       <td class="n" id="sq4x7"></td>
98
99       <td class="n" id="sq5x7"></td>
100
101       <td class="n" id="sq6x7"></td>
102
103       <td class="n" id="sq7x7"></td>
104
105       <td class="n" id="sq8x7"></td>
106
107       <td class="n" id="sq9x7"></td>
108
109       <td class="h"><img src="sym/orange.png"></td>
110
111       <td class="w">Unblockable leap (capture or non-capture)</td>
112     </tr>
113
114     <tr>
115       <td class="n" id="sq0x6"></td>
116
117       <td class="n" id="sq1x6"></td>
118
119       <td class="n" id="sq2x6"></td>
120
121       <td class="n" id="sq3x6"></td>
122
123       <td class="n" id="sq4x6"></td>
124
125       <td class="n" id="sq5x6"></td>
126
127       <td class="n" id="sq6x6"></td>
128
129       <td class="n" id="sq7x6" onmousedown="down_click(7,-6)"
130       onmouseup="up_click()"><img src="sym/WhiteCommoner.png"></td>
131
132       <td class="n" id="sq8x6"></td>
133
134       <td class="n" id="sq9x6"></td>
135
136       <td class="h"><img src="sym/green.png"></td>
137
138       <td class="w">Non-capture only</td>
139     </tr>
140
141     <tr>
142       <td class="n" id="sq0x5"></td>
143
144       <td class="n" id="sq1x5"></td>
145
146       <td class="n" id="sq2x5"></td>
147
148       <td class="n" id="sq3x5" onmousedown="down_click(3,5)"
149       onmouseup="up_click()"></td>
150
151       <td class="n" id="sq4x5" onmousedown="down_click(4,5)"
152       onmouseup="up_click()"><img src="sym/WhiteAdvisor.png"></td>
153
154       <td class="n" id="sq5x5" onmousedown="down_click(5,5)"
155       onmouseup="up_click()"><img src="sym/WhiteElephant.png"></td>
156
157       <td class="n" id="sq6x5" onmousedown="down_click(6,5)"
158       onmouseup="up_click()"><img src="sym/WhiteGold.png"></td>
159
160       <td class="n" id="sq7x5"></td>
161
162       <td class="n" id="sq8x5"></td>
163
164       <td class="n" id="sq9x5"></td>
165
166       <td class="h"><img src="sym/red.png"></td>
167
168       <td class="w">Capture only</td>
169     </tr>
170
171     <tr>
172       <td class="n" id="sq0x4"></td>
173
174       <td class="n" id="sq1x4"></td>
175
176       <td class="n" id="sq2x4"></td>
177
178       <td class="n" id="sq3x4" onmousedown="down_click(3,0)"
179       onmouseup="up_click()"></td>
180
181       <td class="n" id="sq4x4" onmousedown="down_click(4,0)"
182       onmouseup="up_click()"></td>
183
184       <td class="n" id="sq5x4" onmousedown="down_click(5,4)"
185       onmouseup="up_click()"></td>
186
187       <td class="n" id="sq6x4" onmousedown="down_click(6,0)"
188       onmouseup="up_click()"></td>
189
190       <td class="n" id="sq7x4"></td>
191
192       <td class="n" id="sq8x4"></td>
193
194       <td class="n" id="sq9x4"></td>
195     </tr>
196
197     <tr>
198       <td class="n" id="sq0x3"></td>
199
200       <td class="n" id="sq1x3"></td>
201
202       <td class="n" id="sq2x3" onmousedown="down_click(2,3)"
203       onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
204
205       <td class="n" id="sq3x3" onmousedown="down_click(3,3)"
206       onmouseup="up_click()"><img src="sym/WhiteRook.png"></td>
207
208       <td class="n" id="sq4x3" onmousedown="down_click(4,3)"
209       onmouseup="up_click()"><img src="sym/WhiteKnight.png"></td>
210
211       <td class="n" id="sq5x3" onmousedown="down_click(5,0)"
212       onmouseup="up_click()"></td>
213
214       <td class="n" id="sq6x3" onmousedown="down_click(6,3)"
215       onmouseup="up_click()"><img src="sym/WhiteBishop.png"></td>
216
217       <td class="n" id="sq7x3" onmousedown="down_click(7,3)"
218       onmouseup="up_click()"><img src="sym/WhiteKing.png"></td>
219
220       <td class="n" id="sq8x3"></td>
221
222       <td class="n" id="sq9x3"></td>
223     </tr>
224
225     <tr>
226       <td class="n" id="sq0x2"></td>
227
228       <td class="n" id="sq1x2"></td>
229
230       <td class="n" id="sq2x2"></td>
231
232       <td class="n" id="sq3x2"></td>
233
234       <td class="n" id="sq4x2"></td>
235
236       <td class="n" id="sq5x2"></td>
237
238       <td class="n" id="sq6x2"></td>
239
240       <td class="n" id="sq7x2"></td>
241
242       <td class="n" id="sq8x2"></td>
243
244       <td class="n" id="sq9x2"></td>
245     </tr>
246
247     <tr>
248       <td class="n" id="sq0x1"></td>
249
250       <td class="n" id="sq1x1"></td>
251
252       <td class="n" id="sq2x1" onmousedown="down_click(-2,1)"
253       onmouseup="up_click()"></td>
254
255       <td class="n" id="sq3x1"></td>
256
257       <td class="n" id="sq4x1"></td>
258
259       <td class="n" id="sq5x1"></td>
260
261       <td class="n" id="sq6x1"></td>
262
263       <td class="n" id="sq7x1"></td>
264
265       <td class="n" id="sq8x1"></td>
266
267       <td class="n" id="sq9x1"></td>
268     </tr>
269
270     <tr>
271       <td class="n" id="sq0x0"></td>
272
273       <td class="n" id="sq1x0"></td>
274
275       <td class="n" id="sq2x0"></td>
276
277       <td class="n" id="sq3x0"></td>
278
279       <td class="n" id="sq4x0"></td>
280
281       <td class="n" id="sq5x0"></td>
282
283       <td class="n" id="sq6x0"></td>
284
285       <td class="n" id="sq7x0"></td>
286
287       <td class="n" id="sq8x0"></td>
288
289       <td class="n" id="sq9x0"></td>
290     </tr>
291   </table>
292
293   <p id="piece" height="20">:<br>
294   :<br>
295   :<br>
296   :</p>
297
298   <table cellpadding="5" border="1">
299     <tr>
300       <td>Piece</td>
301
302       <td>ID</td>
303
304       <td>value</td>
305
306       <td>Moves (<a href="Betza.html">Betza notation</a>)</td>
307
308       <td>Remarks</td>
309     </tr>
310
311     <tr>
312       <td>King</td>
313
314       <td>K</td>
315
316       <td>-</td>
317
318       <td>K</td>
319
320       <td>No castling of any kind</td>
321     </tr>
322
323     <tr>
324       <td>Rook</td>
325
326       <td>R</td>
327
328       <td>8</td>
329
330       <td>R</td>
331
332       <td></td>
333     </tr>
334
335     <tr>
336       <td>Courier</td>
337
338       <td>B</td>
339
340       <td>5</td>
341
342       <td>B</td>
343
344       <td>Color bound</td>
345     </tr>
346
347     <tr>
348       <td>Elephant</td>
349
350       <td>E</td>
351
352       <td>1</td>
353
354       <td>A</td>
355
356       <td>Bound to 8 squares!</td>
357     </tr>
358
359     <tr>
360       <td>Knight</td>
361
362       <td>N</td>
363
364       <td>4</td>
365
366       <td>N</td>
367
368       <td></td>
369     </tr>
370
371     <tr>
372       <td>Commoner</td>
373
374       <td>M</td>
375
376       <td>4</td>
377
378       <td>K</td>
379
380       <td></td>
381     </tr>
382
383     <tr>
384       <td>Ferz</td>
385
386       <td>F</td>
387
388       <td>2</td>
389
390       <td>F</td>
391
392       <td>Color bound</td>
393     </tr>
394
395     <tr>
396       <td>Wazir</td>
397
398       <td>W</td>
399
400       <td>1.5</td>
401
402       <td>W</td>
403
404       <td></td>
405     </tr>
406
407     <tr>
408       <td>Pawn</td>
409
410       <td>P</td>
411
412       <td>1</td>
413
414       <td>mfWcfF</td>
415
416       <td>Promotes to Ferz on reaching last rank</td>
417     </tr>
418   </table>
419
420   <h3>Pawn peculiarities</h3>
421
422   <ul>
423     <li>Pawns capture differently from how they move (straight
424     move, diagonal capture).</li>
425
426     <li>There is no initial double-push, and thus no en-passant
427     capture.</li>
428
429     <li>Pawns promote to Ferz when they reach last rank; there is
430     no choice.</li>
431   </ul>
432
433   <h3>General rules</h3>
434
435   <ul>
436     <li>It is not allowed to expose your King to check.</li>
437
438     <li>The game is won by checkmating the opponent's King.</li>
439
440     <li>Stalemate (no legal moves, but not in check) also counts as
441     a loss.</li>
442   </ul>
443
444   <h3>Differences with FIDE</h3>
445
446   <p>The Commoner (Man) replaces the Queen. The Ferz and Alfil
447   (Elephant) from Shatranj are added, and the board width expanded
448   to accomodate them. The Pawns have no double move. There is no
449   castling.</p>
450
451   <h3>Strategy issues</h3>
452
453   <p>It is not possible to force checkmate on a bare King with just
454   a single Bishop or Knight, Ferz or Wazir (in addition to your own
455   King). Two Knights, Ferzes or two Wazirs also cannot do this, and
456   F + W only in rare situations. The Commoner can force checkmate
457   against a bare King.</p>
458
459   <p>Alfils are not only color bound, but also skip over half the
460   files and ranks. So they can only reach 8 squares, making them
461   next to worthless.</p>
462
463   <p>Bishops are confined to squares of a single color. Having
464   Bishops on both colors compensates this weakness, and is worth an
465   extra 0.5 on top of their added value.</p>
466 </div><!-- for id="content", starts in the include above -->
467 <!--#include virtual="/server/footer.html" -->
468 </body>
469 </html>