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 | |
24 | | fen:rbkxxxbn/ppxppppx/2qxxB2/4x2p/3P1x2/3n1x2/PPPxPPPP/RBxxxNKR b2,f2,b4,c5,g5,f6: | |
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 | ||
33 | ul | |
34 | li The rook moves one or two squares vertically or horizontally. | |
35 | li The bishop moves one or two squares diagonally. | |
36 | li The queen moves either like a rook or like a bishop. | |
8055eabd BA |
37 | li The other pieces move like in orthodox chess. |
38 | p All pieces can jump over others when moving by two squares. | |
d1be8046 BA |
39 | |
40 | h3 End of the game | |
41 | ||
42 | p Win by checkmate or stalemate: if you can no longer move, you lose. | |
43 | ||
44 | h3 Source | |
45 | ||
46 | p | |
2c5d7b20 BA |
47 | a(href="https://www.chessvariants.com/32turn.dir/wormhole.html") |
48 | | Wormhole chess | |
d1be8046 | 49 | | on chessvariants.com. |
2c5d7b20 BA |
50 | | I changed the pieces movements because I have a better feeling with the |
51 | | moves described earlier. It might evolve. | |
d048c4c9 BA |
52 | |
53 | p Inventor (with other pieces' movements): Fergus Duniho (2000) |