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10 <h1>Capablanca Random Chess (CRC)</h1>
12 <table cellpadding="20">
14 <td><img src="CRC.png"></td>
17 <h3>Initial setup</h3>
19 <p>There is no fixed setup; the back-rank pieces are
20 randomly shuffled with certain restrictions. Black's setup
21 is the mirror image of white's, though. Both sides
31 a2-j2, a7-j7: Pawns</p>
33 <p>The Bishops must start on different colors. The King
34 must start between the Rooks. It has been suggested the
35 Bishops should also not start next to each other.</p>
40 <h3>Moves at a Glance</h3>
42 <p>Click on a piece below to see its moves</p>
46 <td class="n" id="sq0x9" onmousedown="down_click(0,-9)"
47 onmouseup="up_click()"><img src="sym/BlackRook.png"></td>
49 <td class="n" id="sq1x9"></td>
51 <td class="n" id="sq2x9"></td>
53 <td class="n" id="sq3x9"></td>
55 <td class="n" id="sq4x9"></td>
57 <td class="n" id="sq5x9" onmousedown="down_click(5,-9)"
58 onmouseup="up_click()"><img src="sym/BlackKing.png"></td>
60 <td class="n" id="sq6x9"></td>
62 <td class="n" id="sq7x9"></td>
64 <td class="n" id="sq8x9"></td>
66 <td class="n" id="sq9x9" onmousedown="down_click(9,9)"
67 onmouseup="up_click()"><img src="sym/BlackRook.png"></td>
69 <td class="h"><img src="sym/yellow.png"></td>
71 <td class="w" rowspan="2" valign="top">
72 <p>Sliding capture or non-capture,<br>
73 can be blocked on any square along the ray</p>
78 <td class="n" id="sq0x8"></td>
80 <td class="n" id="sq1x8"></td>
82 <td class="n" id="sq2x8" onmousedown="down_click(2,0)"
83 onmouseup="up_click()"></td>
85 <td class="n" id="sq3x8"></td>
87 <td class="n" id="sq4x8"></td>
89 <td class="n" id="sq5x8"></td>
91 <td class="n" id="sq6x8"></td>
93 <td class="n" id="sq7x8"></td>
95 <td class="n" id="sq8x8"></td>
97 <td class="n" id="sq9x8"></td>
101 <td class="n" id="sq0x7"></td>
103 <td class="n" id="sq1x7"></td>
105 <td class="n" id="sq2x7"></td>
107 <td class="n" id="sq3x7"></td>
109 <td class="n" id="sq4x7"></td>
111 <td class="n" id="sq5x7"></td>
113 <td class="n" id="sq6x7"></td>
115 <td class="n" id="sq7x7"></td>
117 <td class="n" id="sq8x7"></td>
119 <td class="n" id="sq9x7"></td>
121 <td class="h"><img src="sym/orange.png"></td>
123 <td class="w">Unblockable leap (capture or non-capture)</td>
127 <td class="n" id="sq0x6"></td>
129 <td class="n" id="sq1x6"></td>
131 <td class="n" id="sq2x6"></td>
133 <td class="n" id="sq3x6"></td>
135 <td class="n" id="sq4x6"></td>
137 <td class="n" id="sq5x6" onmousedown="down_click(5,6)"
138 onmouseup="up_click()"><img src=
139 "sym/WhiteArchbishop.png"></td>
141 <td class="n" id="sq6x6"></td>
143 <td class="n" id="sq7x6"></td>
145 <td class="n" id="sq8x6"></td>
147 <td class="n" id="sq9x6"></td>
149 <td class="h"><img src="sym/green.png"></td>
151 <td class="w">Non-capture only</td>
155 <td class="n" id="sq0x5"></td>
157 <td class="n" id="sq1x5"></td>
159 <td class="n" id="sq2x5"></td>
161 <td class="n" id="sq3x5"></td>
163 <td class="n" id="sq4x5"></td>
165 <td class="n" id="sq5x5"></td>
167 <td class="n" id="sq6x5"></td>
169 <td class="n" id="sq7x5"></td>
171 <td class="n" id="sq8x5"></td>
173 <td class="n" id="sq9x5"></td>
175 <td class="h"><img src="sym/red.png"></td>
177 <td class="w">Capture only</td>
181 <td class="n" id="sq0x4"></td>
183 <td class="n" id="sq1x4"></td>
185 <td class="n" id="sq2x4"></td>
187 <td class="n" id="sq3x4"></td>
189 <td class="n" id="sq4x4"></td>
191 <td class="n" id="sq5x4" onmousedown="down_click(5,4)"
192 onmouseup="up_click()"><img src="sym/WhiteMarshall.png"></td>
194 <td class="n" id="sq6x4"></td>
196 <td class="n" id="sq7x4"></td>
198 <td class="n" id="sq8x4"></td>
200 <td class="n" id="sq9x4"></td>
204 <td class="n" id="sq0x3"></td>
206 <td class="n" id="sq1x3" onmousedown="down_click(1,3)"
207 onmouseup="up_click()"><img src="sym/BlackPawn.png"></td>
209 <td class="n" id="sq2x3" onmousedown="down_click(2,3)"
210 onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
212 <td class="n" id="sq3x3" onmousedown="down_click(3,3)"
213 onmouseup="up_click()"><img src="sym/WhiteRook.png"></td>
215 <td class="n" id="sq4x3" onmousedown="down_click(4,3)"
216 onmouseup="up_click()"><img src="sym/WhiteKnight.png"></td>
218 <td class="n" id="sq5x3" onmousedown="down_click(5,3)"
219 onmouseup="up_click()"><img src="sym/WhiteQueen.png"></td>
221 <td class="n" id="sq6x3" onmousedown="down_click(6,3)"
222 onmouseup="up_click()"><img src="sym/WhiteBishop.png"></td>
224 <td class="n" id="sq7x3" onmousedown="down_click(7,3)"
225 onmouseup="up_click()"><img src="sym/WhiteKing.png"></td>
227 <td class="n" id="sq8x3"></td>
229 <td class="n" id="sq9x3"></td>
233 <td class="n" id="sq0x2"></td>
235 <td class="n" id="sq1x2"></td>
237 <td class="n" id="sq2x2"></td>
239 <td class="n" id="sq3x2"></td>
241 <td class="n" id="sq4x2"></td>
243 <td class="n" id="sq5x2"></td>
245 <td class="n" id="sq6x2"></td>
247 <td class="n" id="sq7x2"></td>
249 <td class="n" id="sq8x2"></td>
251 <td class="n" id="sq9x2"></td>
255 <td class="n" id="sq0x1"></td>
257 <td class="n" id="sq1x1"></td>
259 <td class="n" id="sq2x1" onmousedown="down_click(-2,1)"
260 onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
262 <td class="n" id="sq3x1"></td>
264 <td class="n" id="sq4x1"></td>
266 <td class="n" id="sq5x1"></td>
268 <td class="n" id="sq6x1"></td>
270 <td class="n" id="sq7x1"></td>
272 <td class="n" id="sq8x1"></td>
274 <td class="n" id="sq9x1"></td>
278 <td class="n" id="sq0x0"></td>
280 <td class="n" id="sq1x0"></td>
282 <td class="n" id="sq2x0"></td>
284 <td class="n" id="sq3x0"></td>
286 <td class="n" id="sq4x0"></td>
288 <td class="n" id="sq5x0"></td>
290 <td class="n" id="sq6x0"></td>
292 <td class="n" id="sq7x0"></td>
294 <td class="n" id="sq8x0"></td>
296 <td class="n" id="sq9x0"></td>
300 <p id="piece" height="20">:<br>
305 <table cellpadding="5" border="1">
313 <td>Moves (<a href="Betza.html">Betza notation</a>)</td>
327 <td>Can castle with Rook, moving 3 steps towards it</td>
411 <td>Promotes to Q, R, B, or N on reaching last rank</td>
415 <h3>Pawn peculiarities</h3>
418 <li>Pawns capture differently from how they move (straight
419 move, diagonal capture).</li>
421 <li>Pawns can move two squares ahead from their initial
422 position, provided they are not blocked.</li>
424 <li>On the move immediately after such a double push, they can
425 be captured en passant by another Pawn, as if they had only
426 moved 1 square ahead.</li>
428 <li>Pawns promote to another (non-royal) piece of choice when
429 they reach last rank.</li>
434 <p>A King that has not moved before can move to the c1/c8 or
435 i1/i8 in the direction of a Rook that has not moved before, in
436 which case that Rook is moved to the square on the other side
437 next to the King. This is only allowed if all squares traveled
438 through by King and Rook are empty (after their removal), when
439 the King is not in check on the square it came from, and would
440 not be in check on any of the squares it skipped over.</p>
442 <h3>General rules</h3>
445 <li>It is not allowed to expose your King to check.</li>
447 <li>The game is won by checkmating the opponent's King.</li>
449 <li>Stalemate (no legal moves, but not in check) is a
453 <p>You can use the New Shuffle dialog to control the
454 randomization of the initial position.</p>
456 <h3>Differences with FIDE</h3>
458 <p>The Chancellor and Archbishop pieces are extra, and the board
459 is expanded to accomodate them. Castling is generalized to allow
460 it with non-standard placement of King and Rooks.</p>
462 <h3>Strategy issues</h3>
464 <p>It is not possible to force checkmate on a bare King with just
465 a single Bishop or Knight (in addition to your own King). Two
466 Knights cannot do that either. The Archbishop can force checkmate
467 against a bare King.</p>
469 <p>Bishops are confined to squares of a single color. Having
470 Bishops on both colors compensates this weakness, and is worth an
471 extra 0.5 on top of their added value.</p>
473 <p>As Chancellor and Queen are nearly equal in value to Queen,
474 under-promotion is very common, and there is virtually never any
475 need to promote to R, B or N.</p>
477 <p>The super-pieces (Q, C, A) devaluate by the presence of
478 lower-valued opponent pieces. As a result trading Q for R + B is
479 in general a good trade when you still have both J, as the latter
480 gain in value by eliminating the opponent's R and B, which is
481 more compensation than the intrinsic value differene between Q
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