Attempt to clarify installation instructions a little
[vchess.git] / client / src / translations / rules / Doublemove2 / en.pug
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bc0b9205 2 | Move twice at every turn. The goal is to capture the king.
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dbcc32e9 4p.
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5 The only difference with orthodox chess is the double-move rule,
6 but this affects the game a lot.
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9 At the very first move of the game, white make only one move - as usual.
10 However, after that and for all the game each side must play twice at
964eda04 11 every turn (except if the first move captures the enemy king).
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13figure.diagram-container
14 .diagram.diag12
15 | fen:rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR:
16 .diagram.diag22
17 | fen:r1bqkbnr/pppp1ppp/2n5/4p3/2B1P3/5Q2/PPPP1PPP/RNB1K1NR:
18 figcaption.
19 Left: after the moves 1.e4 e5, the 'd' pawn is pinned.
bc0b9205 20 Right: the black king is "under check".
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b406466b 23 In the diagram position on the left, after the first black move ...e5,
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24 moving the 'd' pawn would allow 2.Bb5,Bxe8 capturing the king.
25 On the right, after 2.Qf3,Bc4 the threats are 3.Bxf7,Bxe8 and 3.Qxf7,Qxe8.
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27h3 En-passant capture
28
29p.
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30 Capturing en-passant is allowed under certain conditions.
31 If the opponent moved a pawn allowing such a capture (once or twice),
32 then (to take it) you must capture en-passant at the first move of your turn.
33 After that, if (and only if) there is another en-passant capture available
34 you can play it on the second move.
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35
36p.
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37 Note: if a pawn 2-squares jump was made and then a piece landed at the
38 en-passant square at the second move, a pawn capture on this square
39 takes only the piece.
40 And, if a pawn advanced twice then en-passant capture
41 on its first movement is impossible (the pawn is now "too far").
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43h3 More information
44
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b406466b 46 | This variant is derived from
1257d6a4 47 a(href="/#/variants/Doublemove1") Marseillais chess
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48 | . It is also playable
49 a(href="https://greenchess.net/rules.php?v=double-move") on greenchess
50 | .
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51
52p Inventor: Fred Galvin (1957)