Some fixes. Screen variant computer play is still broken, seemingly
[vchess.git] / client / src / translations / rules / Checkered1 / en.pug
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1d184b4c 1p.boxed
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2 | The capture of an enemy piece produces a new "checkered" piece belonging
3 | to both players.
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4f298adb 5figure.showPieces.text-center
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6 img(src="/images/pieces/Checkered/cp.svg")
7 img(src="/images/pieces/Checkered/cr.svg")
8 img(src="/images/pieces/Checkered/cn.svg")
9 img(src="/images/pieces/Checkered/cb.svg")
10 img(src="/images/pieces/Checkered/cq.svg")
11 figcaption Checkered pieces, born after captures.
1d184b4c 12
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13p Note: the initial French name for this variant is "l'Échiqueté".
14
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15p The game potentially evolves in two stages.
16
17h2.stageDelimiter Stage 1
18
19h3 Basics
20
21ol
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22 li
23 | Each capture produces a new piece, taking on nature of
24 | the capturing or captured one.
25 li
26 | The new piece arising from a capture has a new color:
27 | "checkered", as illustrated above.
28 li
29 | All checkered pieces belong to the player in turn and can
30 | capture the opponents pieces.
1d184b4c 31
4bd00ce3 32p Remarks:
1d184b4c 33ul
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34 li.
35 A non-capturing checkered move cannot be "undone" right after since
36 this would repeat the same position.
37 li Checkered pieces cannot be captured.
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38
39figure.diagram-container
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40 .diagram
41 | fen:2kr4/pp6/2p5/4ss1r/1P2ns1P/2Np4/P1P1P1BP/R2o1RK1:
42 figcaption.
43 Black plays Rxh4=P. (Checkered pawn to) h5 is allowed then,
44 because piece's nature changed.
1d184b4c 45
1042fd0a 46h3 Pawns
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47
48ul
1042fd0a 49 li.
2c5d7b20 50 Pawns can jump two squares only from their initial rank, and only once in
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51 the game. A checkered pawn keeps this right if the starting pawn
52 did not use it.
1042fd0a 53 li.
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54 Checkered pawns cannot capture en passant, because while the pawn was
55 "passing" they were of the same color.
1d184b4c 56
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57h3 Stalemate or checkmate?
58
59p.
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60 The following diagram seems to show a mating pattern, but the king if
61 "attacked" by a checkered pawn – which still belongs to white.
62 Therefore, it can be considered that it's not really a check because
63 white is unable to "give back the turn".
64 Without the black bishop on a7 it would be mate (without debate), because
2c5d7b20 65 the king could virtually go to g1 before being captured by the
173f11dc 66 chameleon pawn.
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67
68figure.diagram-container
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69 .diagram
70 | fen:7k/b5pp/8/8/8/8/6ss/7K:
71 figcaption After 1...g2+(#?)
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72
73p.
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74 The interface considers that it's mate in both cases, following the idea
75 "it's checkmate if we cannot move, and the opponent on its turn could
76 take the king" (maybe after an impossible move).
26c1e3bd 77
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78h2.stageDelimiter Stage 2
79
80p.
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81 During the game one of the two players can decide to take control of the
82 checkered pieces.
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83 They thus become autonomous and vulnerable to being captured - stage 2
84 begins. The other player is in charge of both the white and black pieces, and
85 tries to eliminate checkered pieces.
1042fd0a 86 The checkered side wins by checkmating either the white or black king.
1d184b4c 87
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88p.
89 To take the checkered pieces, play a move that "takes opponent's king" with
90 your king, and then execute a move. This is possible only if no such move
91 can capture a king.
92
93h4 Variant of stage 2 (unimplemented)
6752407b 94p.
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95 An observer could decide to join the game by taking the checkered pieces
96 at any moment.
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97 It then becomes a chess game with three players, with some subtelties to be
98 resolved. It was tested in some (real life) games organised by the variant
99 inventor.
6752407b 100
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101h3 Special moves
102
4bd00ce3 103p Checkered pawns can...
1d184b4c 104ul
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105 li move and capture in either direction;
106 li take en passant,
107 li be promoted on either the first or eighth row.
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108
109h3 Credits
110
111ul
1042fd0a 112 li.
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113 The rules of Checkered Chess were thought up by Patrick Bernier and
114 developed with the help of Benjamin Auder around 2011-2012.
1042fd0a 115 li.
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116 Thanks also to Olive Martin, Christian Poisson, Bevis Martin, Laurent
117 Nouhaud and Frédéric Fradet.