Check out Marseillais Chess, our featured variant for February, 2024.

# Twiknight

Jens Baek Nielsen invented this game, and wrote about it in Issue 67/68 (December 1994) of ETEROSCACCO, the periodical of AISE. The rules were shaped in games with, and improved by suggestions of Torben Osted and Ian G. Richardson.

## Rules

The usual rules of chess apply, with the following modifications:

• Once per game, a player may make a double move with a knight. In such a double move, the player moves the same knight twice. While doing so, he may be in check after the first half of the double move. There must be a distinct square in the middle of a double move. For instance, a player can take two enemy pieces in one double move, but when there is a white piece on c3, a white knight on b1 cannot doublemove to d5.
• The knights may not move until move 3.
• The knights always attack the enemy king with a double move, e.g., when there is a white knight on b1, and c3 is empty or occupied by a black piece, a black king on d5 is considered to be in check, even when white already has used its double knight move. As a consequence, a black king on e5 may also not move to d5 in this situation.

## Sample game

More details on this variant can be found in Issue 67/68 of Eteroscacco. Here is the shortest of the sample games given there. White is Jens Baek Nielsen, black is Ian G. Richardson.

 1 c4, e5 2 g4, Bc5 3 B g2?, B x f2 + ! 4 K x f2, Q h4 + !! 5 N f3 x h4 (doublemove), N f6 + 6 K f1, N x g4 + (after 6. Kf3, N c6 d4 (doublemove) follows) 7 K g1, N c6 d4 (doublemove)

## Comment

The inventor wrote about his game:

... this chess variant has a lot of active and interesting play - the twiknight influences the game all the way through.
It has good speed, and in my point of view it has an advantage to progressive variants, where series of 6-7 moves or more are so hard to calculate that it is a little random who wins the game.

Indeed, the sample games show that the knights have a formidable attack on the enemy king.

Written by: Hans Bodlaender.
WWW page created: February 13, 1996. Last modified: December 11, 1996. ﻿