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2 <title>Three Checks</title>
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12 <table cellpadding="20">
14 <td><img src="FIDE.png"></td>
17 <h3>Initial setup</h3>
21 a1, a8, h1, h8: Rook<br>
22 c1, c8, f1, f8: Bishop<br>
23 b1, b8, g1, g8: Knight<br>
24 a2-h2, a7-h7: Pawns</p>
29 <h3>Moves at a Glance</h3>
31 <p>Click on a piece below to see its moves</p>
35 <td class="h" id="sq0x9"></td>
37 <td class="n" id="sq1x9" onmousedown="down_click(1,-9)"
38 onmouseup="up_click()"><img src="sym/BlackRook.png"></td>
40 <td class="n" id="sq2x9"></td>
42 <td class="n" id="sq3x9"></td>
44 <td class="n" id="sq4x9"></td>
46 <td class="n" id="sq5x9" onmousedown="down_click(5,9)"
47 onmouseup="up_click()"><img src="sym/BlackKing.png"></td>
49 <td class="n" id="sq6x9"></td>
51 <td class="n" id="sq7x9"></td>
53 <td class="n" id="sq8x9" onmousedown="down_click(8,9)"
54 onmouseup="up_click()"><img src="sym/BlackRook.png"></td>
56 <td class="h" id="sq9x9"></td>
58 <td class="h"><img src="sym/yellow.png"></td>
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>
67 <td class="h" id="sq0x8"></td>
69 <td class="n" id="sq1x8"></td>
71 <td class="n" id="sq2x8"></td>
73 <td class="n" id="sq3x8"></td>
75 <td class="n" id="sq4x8"></td>
77 <td class="n" id="sq5x8"></td>
79 <td class="n" id="sq6x8"></td>
81 <td class="n" id="sq7x8"></td>
83 <td class="n" id="sq8x8"></td>
85 <td class="h" id="sq9x8"></td>
89 <td class="h" id="sq0x7"></td>
91 <td class="n" id="sq1x7"></td>
93 <td class="n" id="sq2x7"></td>
95 <td class="n" id="sq3x7"></td>
97 <td class="n" id="sq4x7"></td>
99 <td class="n" id="sq5x7"></td>
101 <td class="n" id="sq6x7"></td>
103 <td class="n" id="sq7x7"></td>
105 <td class="n" id="sq8x7"></td>
107 <td class="h" id="sq9x7"></td>
109 <td class="h"><img src="sym/orange.png"></td>
111 <td class="w">Unblockable leap (capture or non-capture)</td>
115 <td class="h" id="sq0x6"></td>
117 <td class="n" id="sq1x6"></td>
119 <td class="n" id="sq2x6"></td>
121 <td class="n" id="sq3x6"></td>
123 <td class="n" id="sq4x6"></td>
125 <td class="n" id="sq5x6"></td>
127 <td class="n" id="sq6x6"></td>
129 <td class="n" id="sq7x6"></td>
131 <td class="n" id="sq8x6"></td>
133 <td class="h" id="sq9x6"></td>
135 <td class="h"><img src="sym/green.png"></td>
137 <td class="w">Non-capture only</td>
141 <td class="h" id="sq0x5"></td>
143 <td class="n" id="sq1x5"></td>
145 <td class="n" id="sq2x5"></td>
147 <td class="n" id="sq3x5"></td>
149 <td class="n" id="sq4x5"></td>
151 <td class="n" id="sq5x5"></td>
153 <td class="n" id="sq6x5"></td>
155 <td class="n" id="sq7x5"></td>
157 <td class="n" id="sq8x5"></td>
159 <td class="h" id="sq9x5"></td>
161 <td class="h"><img src="sym/red.png"></td>
163 <td class="w">Capture only</td>
167 <td class="h" id="sq0x4"></td>
169 <td class="n" id="sq1x4"></td>
171 <td class="n" id="sq2x4"></td>
173 <td class="n" id="sq3x4"></td>
175 <td class="n" id="sq4x4"></td>
177 <td class="n" id="sq5x4"></td>
179 <td class="n" id="sq6x4"></td>
181 <td class="n" id="sq7x4"></td>
183 <td class="n" id="sq8x4"></td>
185 <td class="h" id="sq9x4"></td>
189 <td class="h" id="sq0x3"></td>
191 <td class="n" id="sq1x3" onmousedown="down_click(1,3)"
192 onmouseup="up_click()"><img src="sym/BlackPawn.png"></td>
194 <td class="n" id="sq2x3" onmousedown="down_click(2,3)"
195 onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
197 <td class="n" id="sq3x3" onmousedown="down_click(3,3)"
198 onmouseup="up_click()"><img src="sym/WhiteRook.png"></td>
200 <td class="n" id="sq4x3" onmousedown="down_click(4,3)"
201 onmouseup="up_click()"><img src="sym/WhiteKnight.png"></td>
203 <td class="n" id="sq5x3" onmousedown="down_click(5,3)"
204 onmouseup="up_click()"><img src="sym/WhiteQueen.png"></td>
206 <td class="n" id="sq6x3" onmousedown="down_click(6,3)"
207 onmouseup="up_click()"><img src="sym/WhiteBishop.png"></td>
209 <td class="n" id="sq7x3" onmousedown="down_click(7,3)"
210 onmouseup="up_click()"><img src="sym/WhiteKing.png"></td>
212 <td class="n" id="sq8x3"></td>
214 <td class="h" id="sq9x3"></td>
218 <td class="h" id="sq0x2"></td>
220 <td class="n" id="sq1x2"></td>
222 <td class="n" id="sq2x2"></td>
224 <td class="n" id="sq3x2"></td>
226 <td class="n" id="sq4x2"></td>
228 <td class="n" id="sq5x2"></td>
230 <td class="n" id="sq6x2"></td>
232 <td class="n" id="sq7x2"></td>
234 <td class="n" id="sq8x2"></td>
236 <td class="h" id="sq9x2"></td>
240 <td class="h" id="sq0x1"></td>
242 <td class="n" id="sq1x1"></td>
244 <td class="n" id="sq2x1" onmousedown="down_click(-2,1)"
245 onmouseup="up_click()"><img src="sym/WhitePawn.png"></td>
247 <td class="n" id="sq3x1"></td>
249 <td class="n" id="sq4x1"></td>
251 <td class="n" id="sq5x1"></td>
253 <td class="n" id="sq6x1"></td>
255 <td class="n" id="sq7x1"></td>
257 <td class="n" id="sq8x1"></td>
259 <td class="h" id="sq9x1"></td>
263 <td class="h" id="sq0x0"></td>
265 <td class="n" id="sq1x0"></td>
267 <td class="n" id="sq2x0"></td>
269 <td class="n" id="sq3x0"></td>
271 <td class="n" id="sq4x0"></td>
273 <td class="n" id="sq5x0"></td>
275 <td class="n" id="sq6x0"></td>
277 <td class="n" id="sq7x0"></td>
279 <td class="n" id="sq8x0"></td>
281 <td class="h" id="sq9x0"></td>
285 <p id="piece" height="20">:<br>
290 <table cellpadding="5" border="1">
298 <td>Moves (<a href="Betza.html">Betza notation</a>)</td>
312 <td>Can castle with Rook, moving 2 steps towards it</td>
372 <td>Promotes to Q, R, B, or N on reaching last rank</td>
376 <h3>Pawn peculiarities</h3>
379 <li>Pawns capture differently from how they move (straight
380 move, diagonal capture).</li>
382 <li>Pawns can move two squares straight ahead from their
383 initial position, provided they are not blocked.</li>
385 <li>On the move immediately after such a double push, they can
386 be captured en passant by another Pawn, as if they had only
387 moved 1 square ahead.</li>
389 <li>Pawns promote to another (non-royal) piece of choice when
390 they reach last rank.</li>
395 <p>A King that has not moved before can move two squares in the
396 direction of a Rook that has not moved before, in which case that
397 Rook is moved to the square the King skipped over. This is only
398 allowed if all squares between King and Rook are empty, when the
399 King is not in check on the square it came from, and would not be
400 in check on any of the squares it skipped over.</p>
402 <h3>General rules</h3>
405 <li>It is not allowed to expose your King to capture.</li>
407 <li>The game is won by checkmating the opponent's King, <b>or
408 by checking it for the third time</b>.</li>
410 <li>Stalemate (no legal moves, but not in check) is a
414 <h3>Differences with FIDE</h3>
416 <p>You lose when being checked for the third time.</p>
418 <h3>Strategy issues</h3>
420 <p>Bishops are confined to squares of a single color. Having
421 Bishops on both colors compensates this weakness, and is worth an
422 extra 0.5 on top of their added value.</p>
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