| 1 | p.boxed |
| 2 | | All pieces can be captured en passant, by any piece. |
| 3 | |
| 4 | p More precisely: |
| 5 | ul |
| 6 | li. |
| 7 | A piece making a multistep move can be captured by an opponent's piece |
| 8 | guarding a square on its way; this capture is only possible right after |
| 9 | the move (same condition as for en passant pawns captures). |
| 10 | li. |
| 11 | Even if the capturer gets captured en passant on next turn, |
| 12 | the initial captured piece does not return to the board. |
| 13 | |
| 14 | p This is a generalisation of the pawn en passant capture, which is still possible. |
| 15 | |
| 16 | h3 Special moves |
| 17 | |
| 18 | ul |
| 19 | li. |
| 20 | Knights become knightriders, which may make multi knight-steps in the same direction. |
| 21 | For example in the standard initial position, the knightrider on g1 |
| 22 | can go to e5 or capture d7 in addition to the knight moves (see diagram below). |
| 23 | li The king can capture a piece en passant by making a knight move. |
| 24 | |
| 25 | figure.diagram-container |
| 26 | .diagram |
| 27 | | fen:rnbqk1nr/ppppppbp/6p1/8/8/2NP5/PPP1PPPP/R1BQKBNR h3,f3,e5,d7: |
| 28 | figcaption. |
| 29 | Possible knightrider moves after 1.d3 g6 2.Nc3 Bg7. |
| 30 | If 3.Nxd7, 3...Bxe5 e.p. is possible. |
| 31 | |
| 32 | p. |
| 33 | Due to the extended knight movement, a capture, check or even checkmate |
| 34 | could be played at move 1. On the following diagram 1.Nxe7 is mate, |
| 35 | and black in turn could play 1...Nxg2 trapping the queen. |
| 36 | Consequently, captures are disabled at move 1. |
| 37 | |
| 38 | figure.diagram-container |
| 39 | .diagram |
| 40 | | fen:nbqnbrkr/pppppppp/8/8/8/8/PPPPPPPP/RNKBQNBR: |
| 41 | figcaption 1.Nxe7# and 1...Nxg2: "knightriders' anomalies". |
| 42 | |
| 43 | h3 Source |
| 44 | |
| 45 | p |
| 46 | a(href="https://www.chessvariants.com/difftaking.dir/enpassant.html") En Passant chess |
| 47 | | on chessvariants.com. |
| 48 | |
| 49 | p Inventor: Andy Kurnia (1998) |