whats_new/rules/Knightmate.html

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  10   <h1>Knightmate</h1>
  11
  12   <table cellpadding="20">
  13     <tr>
  14       <td><img src="Knightmate.png"></td>
  15
  16       <td>
  17         <h3>Initial setup</h3>
  18
  19         <p>e1, e8: Royal Knight<br>
  20         d1, d8: Queen<br>
  21         a1, a8, h1, h8: Rook<br>
  22         c1, c8, f1, f8: Bishop<br>
  23         b1, b8, g1, g8: Commoners<br>
  24         a2-h2, a7-h7: Pawns</p>
  25       </td>
  26     </tr>
  27   </table>
  28
  29   <h3>Moves at a Glance</h3>
  30
  31   <p>Click on a piece below to see its moves</p>
  32
  33   <table class="board">
  34     <tr>
  35       <td class="h" id="sq0x9"></td>
  36
  37       <td class="n" id="sq1x9" onmousedown="down_click(3,-9)"
  38       onmouseup="up_click()"><img src="sym/BlackRook.png"></td>
  39
  40       <td class="n" id="sq2x9"></td>
  41
  42       <td class="n" id="sq3x9"></td>
  43
  44       <td class="n" id="sq4x9"></td>
  45
  46       <td class="n" id="sq5x9" onmousedown="down_click(5,9)"
  47       onmouseup="up_click()"><img src="sym/BlackUnicorn.png"></td>
  48
  49       <td class="n" id="sq6x9"></td>
  50
  51       <td class="n" id="sq7x9"></td>
  52
  53       <td class="n" id="sq8x9" onmousedown="down_click(7,9)"
  54       onmouseup="up_click()"><img src="sym/BlackRook.png"></td>
  55
  56       <td class="h" 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="h" id="sq0x8"></td>
  68
  69       <td class="n" id="sq1x8"></td>
  70
  71       <td class="n" id="sq2x8" onmousedown="down_click(2,0)"
  72       onmouseup="up_click()"></td>
  73
  74       <td class="n" id="sq3x8"></td>
  75
  76       <td class="n" id="sq4x8"></td>
  77
  78       <td class="n" id="sq5x8"></td>
  79
  80       <td class="n" id="sq6x8"></td>
  81
  82       <td class="n" id="sq7x8"></td>
  83
  84       <td class="n" id="sq8x8"></td>
  85
  86       <td class="h" id="sq9x8"></td>
  87     </tr>
  88
  89     <tr>
  90       <td class="h" id="sq0x7"></td>
  91
  92       <td class="n" id="sq1x7"></td>
  93
  94       <td class="n" id="sq2x7"></td>
  95
  96       <td class="n" id="sq3x7"></td>
  97
  98       <td class="n" id="sq4x7"></td>
  99
 100       <td class="n" id="sq5x7"></td>
 101
 102       <td class="n" id="sq6x7"></td>
 103
 104       <td class="n" id="sq7x7"></td>
 105
 106       <td class="n" id="sq8x7"></td>
 107
 108       <td class="h" id="sq9x7"></td>
 109
 110       <td class="h"><img src="sym/orange.png"></td>
 111
 112       <td class="w">Unblockable leap (capture or non-capture)</td>
 113     </tr>
 114
 115     <tr>
 116       <td class="h" id="sq0x6"></td>
 117
 118       <td class="n" id="sq1x6"></td>
 119
 120       <td class="n" id="sq2x6" onmousedown="down_click(2,0)"
 121       onmouseup="up_click()"></td>
 122
 123       <td class="n" id="sq3x6" onmousedown="down_click(3,0)"
 124       onmouseup="up_click()"></td>
 125
 126       <td class="n" id="sq4x6" onmousedown="down_click(4,0)"
 127       onmouseup="up_click()"></td>
 128
 129       <td class="n" id="sq5x6" onmousedown="down_click(5,0)"
 130       onmouseup="up_click()"></td>
 131
 132       <td class="n" id="sq6x6" onmousedown="down_click(6,0)"
 133       onmouseup="up_click()"></td>
 134
 135       <td class="n" id="sq7x6" onmousedown="down_click(7,0)"
 136       onmouseup="up_click()"></td>
 137
 138       <td class="n" id="sq8x6"></td>
 139
 140       <td class="h" id="sq9x6"></td>
 141
 142       <td class="h"><img src="sym/green.png"></td>
 143
 144       <td class="w">Non-capture only</td>
 145     </tr>
 146
 147     <tr>
 148       <td class="h" id="sq0x5"></td>
 149
 150       <td class="n" id="sq1x5"></td>
 151
 152       <td class="n" id="sq2x5"></td>
 153
 154       <td class="n" id="sq3x5"></td>
 155
 156       <td class="n" id="sq4x5"></td>
 157
 158       <td class="n" id="sq5x5"></td>
 159
 160       <td class="n" id="sq6x5"></td>
 161
 162       <td class="n" id="sq7x5"></td>
 163
 164       <td class="n" id="sq8x5"></td>
 165
 166       <td class="h" id="sq9x5"></td>
 167
 168       <td class="h"><img src="sym/red.png"></td>
 169
 170       <td class="w">Capture only</td>
 171     </tr>
 172
 173     <tr>
 174       <td class="h" id="sq0x4"></td>
 175
 176       <td class="n" id="sq1x4"></td>
 177
 178       <td class="n" id="sq2x4"></td>
 179
 180       <td class="n" id="sq3x4"></td>
 181
 182       <td class="n" id="sq4x4"></td>
 183
 184       <td class="n" id="sq5x4"></td>
 185
 186       <td class="n" id="sq6x4"></td>
 187
 188       <td class="n" id="sq7x4"></td>
 189
 190       <td class="n" id="sq8x4"></td>
 191
 192       <td class="h" id="sq9x4"></td>
 193     </tr>
 194
 195     <tr>
 196       <td class="h" id="sq0x3"></td>
 197
 198       <td class="n" id="sq1x3" onmousedown="down_click(1,3)"
 199       onmouseup="up_click()"><img src="sym/BlackPawn.png"></td>
 200
 201       <td class="n" id="sq2x3" onmousedown="down_click(2,3)"
 202       onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
 203
 204       <td class="n" id="sq3x3" onmousedown="down_click(3,3)"
 205       onmouseup="up_click()"><img src="sym/WhiteRook.png"></td>
 206
 207       <td class="n" id="sq4x3" onmousedown="down_click(4,-3)"
 208       onmouseup="up_click()"><img src="sym/WhiteUnicorn.png"></td>
 209
 210       <td class="n" id="sq5x3" onmousedown="down_click(5,3)"
 211       onmouseup="up_click()"><img src="sym/WhiteQueen.png"></td>
 212
 213       <td class="n" id="sq6x3" onmousedown="down_click(6,3)"
 214       onmouseup="up_click()"><img src="sym/WhiteBishop.png"></td>
 215
 216       <td class="n" id="sq7x3" onmousedown="down_click(7,-3)"
 217       onmouseup="up_click()"><img src="sym/WhiteCommoner.png"></td>
 218
 219       <td class="n" id="sq8x3"></td>
 220
 221       <td class="h" id="sq9x3"></td>
 222     </tr>
 223
 224     <tr>
 225       <td class="h" id="sq0x2"></td>
 226
 227       <td class="n" id="sq1x2"></td>
 228
 229       <td class="n" id="sq2x2"></td>
 230
 231       <td class="n" id="sq3x2"></td>
 232
 233       <td class="n" id="sq4x2"></td>
 234
 235       <td class="n" id="sq5x2"></td>
 236
 237       <td class="n" id="sq6x2"></td>
 238
 239       <td class="n" id="sq7x2"></td>
 240
 241       <td class="n" id="sq8x2"></td>
 242
 243       <td class="h" id="sq9x2"></td>
 244     </tr>
 245
 246     <tr>
 247       <td class="h" id="sq0x1"></td>
 248
 249       <td class="n" id="sq1x1"></td>
 250
 251       <td class="n" id="sq2x1" onmousedown="down_click(-2,1)"
 252       onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
 253
 254       <td class="n" id="sq3x1"></td>
 255
 256       <td class="n" id="sq4x1"></td>
 257
 258       <td class="n" id="sq5x1"></td>
 259
 260       <td class="n" id="sq6x1"></td>
 261
 262       <td class="n" id="sq7x1"></td>
 263
 264       <td class="n" id="sq8x1"></td>
 265
 266       <td class="h" id="sq9x1"></td>
 267     </tr>
 268
 269     <tr>
 270       <td class="h" id="sq0x0"></td>
 271
 272       <td class="n" id="sq1x0"></td>
 273
 274       <td class="n" id="sq2x0"></td>
 275
 276       <td class="n" id="sq3x0"></td>
 277
 278       <td class="n" id="sq4x0"></td>
 279
 280       <td class="n" id="sq5x0"></td>
 281
 282       <td class="n" id="sq6x0"></td>
 283
 284       <td class="n" id="sq7x0"></td>
 285
 286       <td class="n" id="sq8x0"></td>
 287
 288       <td class="h" id="sq9x0"></td>
 289     </tr>
 290   </table>
 291
 292   <p id="piece" height="20">:<br>
 293   :<br>
 294   :<br>
 295   :</p>
 296
 297   <table cellpadding="5" border="1">
 298     <tr>
 299       <td>Piece</td>
 300
 301       <td>ID</td>
 302
 303       <td>value</td>
 304
 305       <td>Moves (<a href="Betza.html">Betza notation</a>)</td>
 306
 307       <td>Remarks</td>
 308     </tr>
 309
 310     <tr>
 311       <td>Royal Knight</td>
 312
 313       <td>K</td>
 314
 315       <td>-</td>
 316
 317       <td>N</td>
 318
 319       <td>Can castle with Rook, moving 2 steps towards it</td>
 320     </tr>
 321
 322     <tr>
 323       <td>Queen</td>
 324
 325       <td>Q</td>
 326
 327       <td>10</td>
 328
 329       <td>RB or Q</td>
 330
 331       <td></td>
 332     </tr>
 333
 334     <tr>
 335       <td>Rook</td>
 336
 337       <td>R</td>
 338
 339       <td>4.5</td>
 340
 341       <td>R</td>
 342
 343       <td></td>
 344     </tr>
 345
 346     <tr>
 347       <td>Bishop</td>
 348
 349       <td>B</td>
 350
 351       <td>3.25</td>
 352
 353       <td>B</td>
 354
 355       <td>Color-bound</td>
 356     </tr>
 357
 358     <tr>
 359       <td>Commoner</td>
 360
 361       <td>M</td>
 362
 363       <td>3</td>
 364
 365       <td>K</td>
 366
 367       <td></td>
 368     </tr>
 369
 370     <tr>
 371       <td>Pawn</td>
 372
 373       <td>P</td>
 374
 375       <td>1</td>
 376
 377       <td>mfWcfF</td>
 378
 379       <td>Promotes to Q, R, B, or M on reaching last rank</td>
 380     </tr>
 381   </table>
 382
 383   <h3>Pawn peculiarities</h3>
 384
 385   <ul>
 386     <li>Pawns capture differently from how they move (straight
 387     move, diagonal capture).</li>
 388
 389     <li>Pawns can move two squares straight ahead from their
 390     initial position, provided they are not blocked.</li>
 391
 392     <li>On the move immediately after such a double push, they can
 393     be captured en passant by another Pawn, as if they had only
 394     moved 1 square ahead.</li>
 395
 396     <li>Pawns promote to another (non-royal) piece of choice when
 397     they reach last rank.</li>
 398   </ul>
 399
 400   <h3>Castling</h3>
 401
 402   <p>A Royal Knight that has not moved before can move two squares
 403   in the direction of a Rook that has not moved before, in which
 404   case that Rook is moved to the square on the other side next to
 405   the Royal Knight. This is only allowed if all squares traveled
 406   through by Royal Knight and Rook are empty (after their removal),
 407   when the Royal Knight is not in check on the square it came from,
 408   and would not be in check on any of the squares it skipped
 409   over.</p>
 410
 411   <h3>General rules</h3>
 412
 413   <ul>
 414     <li>It is not allowed to expose your Royal Knight to
 415     check.</li>
 416
 417     <li>The game is won by checkmating the opponent's Royal
 418     Knight.</li>
 419
 420     <li>Stalemate (no legal moves, but not in check) is a
 421     draw.</li>
 422   </ul>
 423
 424   <h3>Differences with FIDE</h3>
 425
 426   <p>The King moves as a Knight, the Knights move as a King.</p>
 427
 428   <h3>Strategy issues</h3>
 429
 430   <p>It is not possible to force checkmate on a bare King with just
 431   a single <b>Rook</b>, Bishop or Commoner (in addition to your own
 432   King). All pairs of pieces can force checkmate on a bare King,
 433   however. A Queen can even do it without help of its Royal Knight,
 434   and is thus extremely dangerous.</p>
 435
 436   <p>Bishops are confined to squares of a single color. Having
 437   Bishops on both colors compensates this weakness, and is worth an
 438   extra 0.5 on top of their added value.</p>
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