| 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. |
| 37 | li The other pieces move like in orthodox chess. |
| 38 | p All pieces can jump over others when moving by two squares. |
| 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 |
| 47 | a(href="https://www.chessvariants.com/32turn.dir/wormhole.html") |
| 48 | | Wormhole chess |
| 49 | | on chessvariants.com. |
| 50 | | I changed the pieces movements because I have a better feeling with the |
| 51 | | moves described earlier. It might evolve. |
| 52 | |
| 53 | p |
| 54 | | Inventor (with other pieces' movements): Fergus Duniho (2000). |
| 55 | | Similar to |
| 56 | a(href="https://www.chessvariants.com/boardrules.dir/cheshir.html") |
| 57 | | Cheshire Cat Chess |
| 58 | | by Vernon R. Parton (1970). |