Fix typo in Chakart getComputerMove()
[vchess.git] / client / src / translations / rules / Doublemove2 / en.pug
1 p.boxed
2 | Move twice at every turn. The goal is to capture the king.
3
4 p.
5 The only difference with orthodox chess is the double-move rule,
6 but this affects the game a lot.
7
8 p.
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
11 every turn (even if the first move captures the enemy king).
12
13 figure.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.
20 Right: the black king is "under check".
21
22 p.
23 In the diagram position on the left, after the first black move ...e5,
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.
26
27 h3 En-passant capture
28
29 p.
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.
35
36 p.
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").
42
43 h3 More information
44
45 p
46 | This variant is derived from
47 a(href="/variants/Doublemove1") Marseillais chess
48 | . It is also playable
49 a(href="https://greenchess.net/rules.php?v=double-move") on greenchess
50 | .
51
52 p Inventor: Fred Galvin (1957)