Commit | Line | Data |
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d1be8046 BA |
1 | p.boxed |
2 | | When a piece moves, the initial square disappears. It creates a | |
3 | a(href="https://en.wikipedia.org/wiki/Wormhole") "wormhole" | |
4 | | . | |
5 | ||
6 | p. | |
7 | Since all initial squares vanish, the board has exactly 64 - T squares | |
8 | after T turns, so the game cannot last more than 32 moves. | |
9 | Indeed a vanished square can be jumped over, but cannot be used again. | |
10 | Holes are indicated with the letter 'x' on FEN strings. | |
11 | ||
12 | p. | |
13 | In the diagram situation, the black knight can go to all the marked squares: | |
14 | g5 and f6 are reachable because of the holes on f4 and e5. | |
15 | Indeed the knight first moves one square vertically or horizontally, | |
16 | and only then one square diagonally "in the same direction". | |
17 | This is the only valid description in this variant | |
18 | (others would lead to different knight movements around holes). | |
19 | The black king can go to c6: | |
20 | it moves to the closest non-vanished square (if any). | |
21 | ||
22 | figure.diagram-container | |
23 | .diagram | |
1943de6b | 24 | | fen:cwkxxxwn/ppxppppx/2mxxW2/4x2p/3P1x2/3n1x2/PPPxPPPP/CWxxxNKC b2,f2,b4,c5,g5,f6: |
d1be8046 BA |
25 | figcaption Possible moves for the knight on d3. |
26 | ||
27 | p. | |
28 | No castle or en passant captures are possible. | |
29 | Promotion is permitted but only by capturing. | |
30 | ||
31 | h3 Pieces movements | |
32 | ||
1943de6b BA |
33 | p Three new pieces replace usual sliders: |
34 | ||
35 | figure.showPieces.text-center | |
1d8e9b0c BA |
36 | img(src="/images/pieces/Wormhole/wc.svg" style="width:60px") |
37 | img(src="/images/pieces/Wormhole/ww.svg" style="width:60px") | |
38 | img(src="/images/pieces/Wormhole/wm.svg" style="width:60px") | |
1943de6b BA |
39 | figcaption Left to right: Champion, Wizard, Murray Lion. |
40 | ||
d1be8046 | 41 | ul |
1943de6b BA |
42 | li. |
43 | The champion moves two squares in any direction, | |
44 | or one square orthogonally. | |
45 | li. | |
46 | The wizard moves like an extended knight: two squares in an orthogonal | |
47 | direction, and then one diagonal step. Or, a single diagonal step. | |
48 | li. | |
49 | The Murray Lion can move two squares in any direction. | |
50 | He can also capture (only) by one square like a king. | |
8055eabd BA |
51 | li The other pieces move like in orthodox chess. |
52 | p All pieces can jump over others when moving by two squares. | |
d1be8046 BA |
53 | |
54 | h3 End of the game | |
55 | ||
56 | p Win by checkmate or stalemate: if you can no longer move, you lose. | |
57 | ||
58 | h3 Source | |
59 | ||
60 | p | |
2c5d7b20 BA |
61 | a(href="https://www.chessvariants.com/32turn.dir/wormhole.html") |
62 | | Wormhole chess | |
d1be8046 | 63 | | on chessvariants.com. |
d048c4c9 | 64 | |
b406466b | 65 | p |
1943de6b | 66 | | Inventor: Fergus Duniho (2000). |
b406466b BA |
67 | | Similar to |
68 | a(href="https://www.chessvariants.com/boardrules.dir/cheshir.html") | |
69 | | Cheshire Cat Chess | |
70 | | by Vernon R. Parton (1970). |