Knight relay chess (also called N-relay chess) is a chess variant invented by Mannis Charosh in 1972.[1] In this game, knights relay their power to friendly pieces.

Rules

The rules are the same as those of orthodox chess except as follows.

Any piece, except for the king, that is defended by a friendly knight has the power, in addition to its normal abilities, to move or capture like an orthodox knight. The piece loses the additional power as soon as it is no longer defended by a friendly knight. Knights are immune from capture, cannot capture enemy pieces and cannot give check.[2] Friendly knights defending one another do not gain power. A pawn can be promoted to a new knight, which has the same properties. A pawn may not move to or capture on its first or last rank using relayed knight power. If a pawn relays to its initial rank, it regains the option to make a double-step move. There is no en passant capture.

Example

abcdefgh
8
d8 black king
b7 white knight
c7 black circle
d7 black cross
e7 white circle
f7 black cross
g7 black circle
e6 white pawn
a5 black pawn
c5 black circle
g5 black circle
d4 white knight
f4 black circle
a3 white queen
c3 black knight
c2 black knight
e1 white king
8
77
66
55
44
33
22
11
abcdefgh
The white knight on d4 relays knight power to the white pawn on e6. Circles indicate possible moves of the pawn; crosses and black circles indicate squares that the pawn attacks.

The diagram shows possible moves of the white pawn on e6. Since it is defended by a friendly knight on d4, it can (in addition to its normal abilities) move or capture like a knight to c7, c5, f4, g5 or g7. It cannot move or capture like a knight to the last rank, thus the black king on d8 is not in check. The white knight on b7 does not check the king either and cannot capture the pawn on a5. The white queen cannot take the black knight on c3. The white king is not in check by the black knight on c2.

White can deliver checkmate in this position by playing Qd6#. The black king cannot escape to c8 or e8, since the white queen attacks those squares via knight power relayed by the b7-knight.

See also

References

  1. ↑ Pritchard (2007), p. 169
  2. ↑ Pritchard (2000), p. 94

Bibliography

  • Pritchard, D. B. (1994). The Encyclopedia of Chess Variants. Games & Puzzles Publications. pp. 160–62. ISBN 0-9524142-0-1.
  • Pritchard, D. B. (2000). "§15 Knight Relay Chess". Popular Chess Variants. B.T. Batsford Ltd. pp. 94–97. ISBN 0-7134-8578-7.
  • Pritchard, D. B. (2007). Beasley, John (ed.). The Classified Encyclopedia of Chess Variants. John Beasley. pp. 169–70. ISBN 978-0-9555168-0-1.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.