whats_new/rules/Great.html

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   2   <title>Great Shatranj</title>
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   9
  10   <h1>Great Shatranj</h1>
  11
  12   <table cellpadding="20">
  13     <tr>
  14       <td>
  15         <img src="Great.png">
  16
  17         <p><i>Captured pieces will be displayed beside the board
  18         for promotion choice</i></p>
  19       </td>
  20
  21       <td>
  22         <h3>Initial setup</h3>
  23
  24         <p>e1, e8: King<br>
  25         f1, f8: Minister<br>
  26         d1, d8: Great General<br>
  27         g1, g8: High Priestess<br>
  28         a1, a8, j1, j8: Dababba<br>
  29         c1, c8, h1, h8: Elephant<br>
  30         b1, b8, i1, i8: Knight<br>
  31         a1, a8, j1, j8: War Machine<br>
  32         a2-j2, a7-j7: Pawns</p>
  33       </td>
  34     </tr>
  35   </table>
  36
  37   <h3>Moves at a Glance</h3>
  38
  39   <p>Click on a piece below to see its moves</p>
  40
  41   <table class="board">
  42     <tr>
  43       <td class="n" id="sq0x9"></td>
  44
  45       <td class="n" id="sq1x9"></td>
  46
  47       <td class="n" id="sq2x9"></td>
  48
  49       <td class="n" id="sq3x9"></td>
  50
  51       <td class="n" id="sq4x9"></td>
  52
  53       <td class="n" id="sq5x9"></td>
  54
  55       <td class="n" id="sq6x9"></td>
  56
  57       <td class="n" id="sq7x9"></td>
  58
  59       <td class="n" id="sq8x9"></td>
  60
  61       <td class="n" id="sq9x9"></td>
  62
  63       <td class="h"><img src="sym/yellow.png"></td>
  64
  65       <td class="w" rowspan="2" valign="top">
  66         <p>Sliding capture or non-capture,<br>
  67         can be blocked on any square along the ray</p>
  68       </td>
  69     </tr>
  70
  71     <tr>
  72       <td class="n" id="sq0x8"></td>
  73
  74       <td class="n" id="sq1x8"></td>
  75
  76       <td class="n" id="sq2x8"></td>
  77
  78       <td class="n" id="sq3x8"></td>
  79
  80       <td class="n" id="sq4x8"></td>
  81
  82       <td class="n" id="sq5x8"></td>
  83
  84       <td class="n" id="sq6x8"></td>
  85
  86       <td class="n" id="sq7x8"></td>
  87
  88       <td class="n" id="sq8x8"></td>
  89
  90       <td class="n" id="sq9x8"></td>
  91
  92       <td class="h"></td>
  93     </tr>
  94
  95     <tr>
  96       <td class="n" id="sq0x7"></td>
  97
  98       <td class="n" id="sq1x7"></td>
  99
 100       <td class="n" id="sq2x7"></td>
 101
 102       <td class="n" id="sq3x7"></td>
 103
 104       <td class="n" id="sq4x7"></td>
 105
 106       <td class="n" id="sq5x7"></td>
 107
 108       <td class="n" id="sq6x7"></td>
 109
 110       <td class="n" id="sq7x7"></td>
 111
 112       <td class="n" id="sq8x7"></td>
 113
 114       <td class="n" id="sq9x7"></td>
 115
 116       <td class="h"><img src="sym/orange.png"></td>
 117
 118       <td class="w">Direct leap (capture or non-capture)</td>
 119     </tr>
 120
 121     <tr>
 122       <td class="n" id="sq0x6"></td>
 123
 124       <td class="n" id="sq1x6"></td>
 125
 126       <td class="n" id="sq2x6"></td>
 127
 128       <td class="n" id="sq3x6" onmousedown="down_click(-3,6)"
 129       onmouseup="up_click()"><img src="sym/WhiteElephant.png"></td>
 130
 131       <td class="n" id="sq4x6"></td>
 132
 133       <td class="n" id="sq5x6"></td>
 134
 135       <td class="n" id="sq6x6" onmousedown="down_click(-6,6)"
 136       onmouseup="up_click()"><img src=
 137       "sym/WhiteCrownedRook.png"></td>
 138
 139       <td class="n" id="sq7x6" onmousedown="down_click(-7,6)"
 140       onmouseup="up_click()"><img src="sym/WhiteCommoner.png"></td>
 141
 142       <td class="n" id="sq8x6"></td>
 143
 144       <td class="n" id="sq9x6"></td>
 145
 146       <td class="h"><img src="sym/green.png"></td>
 147
 148       <td class="w">Non-capture only</td>
 149     </tr>
 150
 151     <tr>
 152       <td class="n" id="sq0x5"></td>
 153
 154       <td class="n" id="sq1x5"></td>
 155
 156       <td class="n" id="sq2x5"></td>
 157
 158       <td class="n" id="sq3x5" onmousedown="down_click(3,5)"
 159       onmouseup="up_click()"><img src="sym/WhitePrincess.png"></td>
 160
 161       <td class="n" id="sq4x5"></td>
 162
 163       <td class="n" id="sq5x5"></td>
 164
 165       <td class="n" id="sq6x5"></td>
 166
 167       <td class="n" id="sq7x5"></td>
 168
 169       <td class="n" id="sq8x5"></td>
 170
 171       <td class="n" id="sq9x5"></td>
 172
 173       <td class="h"><img src="sym/red.png"></td>
 174
 175       <td class="w">Capture only</td>
 176     </tr>
 177
 178     <tr>
 179       <td class="n" id="sq0x4"></td>
 180
 181       <td class="n" id="sq1x4"></td>
 182
 183       <td class="n" id="sq2x4"></td>
 184
 185       <td class="n" id="sq3x4" onmousedown="down_click(3,4)"
 186       onmouseup="up_click()"><img src=
 187       "sym/WhiteCrownedBishop.png"></td>
 188
 189       <td class="n" id="sq4x4" onmousedown="down_click(4,4)"
 190       onmouseup="up_click()"><img src=
 191       "sym/WhiteChancellor.png"></td>
 192
 193       <td class="n" id="sq5x4"></td>
 194
 195       <td class="n" id="sq6x4"></td>
 196
 197       <td class="n" id="sq7x4"></td>
 198
 199       <td class="n" id="sq8x4"></td>
 200
 201       <td class="n" id="sq9x4"></td>
 202     </tr>
 203
 204     <tr>
 205       <td class="n" id="sq0x3"></td>
 206
 207       <td class="n" id="sq1x3"></td>
 208
 209       <td class="n" id="sq2x3" onmousedown="down_click(2,3)"
 210       onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
 211
 212       <td class="n" id="sq3x3"></td>
 213
 214       <td class="n" id="sq4x3" onmousedown="down_click(4,3)"
 215       onmouseup="up_click()"><img src="sym/WhiteKnight.png"></td>
 216
 217       <td class="n" id="sq5x3"></td>
 218
 219       <td class="n" id="sq6x3"></td>
 220
 221       <td class="n" id="sq7x3" onmousedown="down_click(7,3)"
 222       onmouseup="up_click()"><img src="sym/WhiteKing.png"></td>
 223
 224       <td class="n" id="sq8x3"></td>
 225
 226       <td class="n" id="sq9x3"></td>
 227     </tr>
 228
 229     <tr>
 230       <td class="n" id="sq0x2"></td>
 231
 232       <td class="n" id="sq1x2"></td>
 233
 234       <td class="n" id="sq2x2"></td>
 235
 236       <td class="n" id="sq3x2"></td>
 237
 238       <td class="n" id="sq4x2"></td>
 239
 240       <td class="n" id="sq5x2"></td>
 241
 242       <td class="n" id="sq6x2"></td>
 243
 244       <td class="n" id="sq7x2"></td>
 245
 246       <td class="n" id="sq8x2"></td>
 247
 248       <td class="n" id="sq9x2"></td>
 249     </tr>
 250
 251     <tr>
 252       <td class="n" id="sq0x1"></td>
 253
 254       <td class="n" id="sq1x1"></td>
 255
 256       <td class="n" id="sq2x1"></td>
 257
 258       <td class="n" id="sq3x1"></td>
 259
 260       <td class="n" id="sq4x1"></td>
 261
 262       <td class="n" id="sq5x1"></td>
 263
 264       <td class="n" id="sq6x1"></td>
 265
 266       <td class="n" id="sq7x1"></td>
 267
 268       <td class="n" id="sq8x1"></td>
 269
 270       <td class="n" id="sq9x1"></td>
 271     </tr>
 272
 273     <tr>
 274       <td class="n" id="sq0x0"></td>
 275
 276       <td class="n" id="sq1x0"></td>
 277
 278       <td class="n" id="sq2x0"></td>
 279
 280       <td class="n" id="sq3x0"></td>
 281
 282       <td class="n" id="sq4x0"></td>
 283
 284       <td class="n" id="sq5x0"></td>
 285
 286       <td class="n" id="sq6x0"></td>
 287
 288       <td class="n" id="sq7x0"></td>
 289
 290       <td class="n" id="sq8x0"></td>
 291
 292       <td class="n" id="sq9x0"></td>
 293     </tr>
 294   </table>
 295
 296   <p id="piece" height="20">:<br>
 297   :<br>
 298   :<br>
 299   :</p>
 300
 301   <table cellpadding="5" border="1">
 302     <tr>
 303       <td>Piece</td>
 304
 305       <td>ID</td>
 306
 307       <td>value</td>
 308
 309       <td>Moves (<a href="Betza.html">Betza notation</a>)</td>
 310
 311       <td>Remarks</td>
 312     </tr>
 313
 314     <tr>
 315       <td>King</td>
 316
 317       <td>K</td>
 318
 319       <td>-</td>
 320
 321       <td>K</td>
 322
 323       <td>Cannot castle</td>
 324     </tr>
 325
 326     <tr>
 327       <td>General</td>
 328
 329       <td>G</td>
 330
 331       <td>6.5</td>
 332
 333       <td>WDFA</td>
 334
 335       <td></td>
 336     </tr>
 337
 338     <tr>
 339       <td>Minister</td>
 340
 341       <td>M</td>
 342
 343       <td>6.5</td>
 344
 345       <td>WDN</td>
 346
 347       <td></td>
 348     </tr>
 349
 350     <tr>
 351       <td>High Priestess</td>
 352
 353       <td>H</td>
 354
 355       <td>6.5</td>
 356
 357       <td>FAN</td>
 358
 359       <td></td>
 360     </tr>
 361
 362     <tr>
 363       <td>Elephant</td>
 364
 365       <td>E</td>
 366
 367       <td>3</td>
 368
 369       <td>FA</td>
 370
 371       <td>Color-bound</td>
 372     </tr>
 373
 374     <tr>
 375       <td>Knight</td>
 376
 377       <td>N</td>
 378
 379       <td>3.25</td>
 380
 381       <td>N</td>
 382
 383       <td></td>
 384     </tr>
 385
 386     <tr>
 387       <td>Woody</td>
 388
 389       <td>W</td>
 390
 391       <td>3</td>
 392
 393       <td>WD</td>
 394
 395       <td></td>
 396     </tr>
 397
 398     <tr>
 399       <td>Pawn</td>
 400
 401       <td>P</td>
 402
 403       <td>1</td>
 404
 405       <td>mfWcfF</td>
 406
 407       <td>Promotes to any other piece that was captured, or to
 408       Soldier</td>
 409     </tr>
 410
 411     <tr>
 412       <td colspan="5"><b>Only available through promotion</b></td>
 413     </tr>
 414
 415     <tr>
 416       <td>Soldier</td>
 417
 418       <td>S</td>
 419
 420       <td>3</td>
 421
 422       <td>WF or K</td>
 423
 424       <td></td>
 425     </tr>
 426   </table>
 427
 428   <h3>Pawn peculiarities</h3>
 429
 430   <ul>
 431     <li>Pawns capture differently from how they move (straight
 432     move, diagonal capture).</li>
 433
 434     <li>There is no initial double-push, and thus no en-passant
 435     capture.</li>
 436
 437     <li>Pawns promote to a piece chosen from the set of captured
 438     pieces, or to Soldier when they reach last rank. The chosen
 439     piece is then removed from this set.</li>
 440   </ul>
 441
 442   <h3>General rules</h3>
 443
 444   <ul>
 445     <li>It is not allowed to expose your King to check.</li>
 446
 447     <li>The game is won by checkmating the opponent's King.</li>
 448
 449     <li>Stalemate (no legal moves, but not in check) is a
 450     draw.</li>
 451
 452     <li>If your opponent only has a King at the beginning of your
 453     turn, and your king is not yet bare, you win. This means that
 454     after you capture the last piece, the opponent gets one
 455     equalizing turn to recapture yours, in which case it would be a
 456     draw.</li>
 457   </ul>
 458
 459   <h3>XBoard interface issues</h3>
 460
 461   <p>When a Pawn can be promoted, XBoard first advances it as a
 462   Pawn to the promotion square. Then it waits for you to complete
 463   the move entry by clicking on the piece in the holdings beside
 464   the board that you want to promote to. Initially there are a
 465   number of Soldiers available in the holdings, for when you should
 466   promote before any of your pieces is captured.</p>
 467
 468   <h3>Differences with FIDE</h3>
 469
 470   <p>There are no sliders such as Rook, Bishop or Queen in this
 471   game: their distant moves have all been replaced by a single
 472   two-square jumping move. In addition it is more related to
 473   Capablanca Chess than to FIDE, featuring compounds of Knight and
 474   the pieces substituting for Rook and Bishop, and the wider board
 475   to accomodate them. There is no double-push on the Pawns (and
 476   thus no e.p. capture), and promotion only allows you to regain
 477   back a piece that you lost before, or one of the stocked Soldier
 478   pieces that do not occur in the initial setup.</p>
 479
 480   <h3>Strategy issues</h3>
 481
 482   <p>Elephants are confined to squares of a single color. Having
 483   Elephants on both colors compensates this weakness, and is worth
 484   an extra 0.5 on top of their added value.</p>
 485
 486   <p>As the three strongest pieces (General, Minister and High
 487   Priestess) are nearly equal in value, under-promotion is very
 488   common.</p>
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