3 ms·

From FIDE rules: > When a player, having the move, plays a pawn to the rank furthest from its starting position, he must exchange that pawn as part of the same

From FIDE rules: > When a player, having the move, plays a pawn to the rank furthest from its starting position, he must exchange that pawn as part of the same move for a new queen, rook, bishop or knight of the same colour on the intended square of arrival. > promotion: 3.7e. Where a pawn reaches the eighth rank and is replaced by a new queen, rook, bishop or knight of the same colour. https://www.fide.com/fide/handbook.html?id=171&view=article https://www.fide.com/fide/handbook.html?id=171&view=article

ColinWright 11y ago
Thank you for the reference - appreciate that. I wonder when that explicit rule was introduced. It says in the article: "But in fact, at the time this game was played there was no specific rule stating that a pawn had to be promoted to a piece of the same colour!
- bradleyjg 11y ago
  Sarratt in his Treatise on the Game of Chess (1808) says: "When a player has pushed a Pawn to Queen, he is at liberty to make a second Queen, a third Rook, or any other piece which he may deem more useful for his attack or defense". While this doesn't explicitly say that he must promote to a piece of the same color, it implies it. After all if the piece could be promoted to either color it would make sense to say a third queen or a fifth rook rather than a second or third.
  - wowaname 11y ago
    That doesn't really imply much. Having a fifth rook does not correlate at all to having a piece of the same or opposite colour. Regardless, based off that rule, a piece of the opposing colour would be defined by "any other peice [sic] which he may deem more useful for his attack" in that play, so it sounds perfectly legal to me.
    - mikeash 11y ago
      If you arrange your game just right, you can legally have up to ten rooks (or bishops or knights, or nine queens) of the same color on the board at once. (This will probably not be possible without the cooperation of the other player.)
  - aidenn0 11y ago
    Not at all, it would be a third Rook of the alternate color.
- jmpeax 11y ago
  I wonder why it was introduced.
AnimalMuppet 11y ago
The article states clearly, more than once, that the move is not legal by current FIDE rules.
sgustard 11y ago
More on the rule history and this puzzle. https://en.wikipedia.org/wiki/Promotion_%28chess%29#1862_British_Chess_Association_rule https://en.wikipedia.org/wiki/Promotion_%28chess%29#1862_Bri... "The broad language of Law XIII also appears to allow promotion to any piece of either color. This led to the whimsical endgame study diagrammed at right. White is to play and checkmate in one move."

ColinWright 11y ago

Thank you for the reference - appreciate that. I wonder when that explicit rule was introduced. It says in the article: "But in fact, at the time this game was played there was no specific rule stating that a pawn had to be promoted to a piece of the same colour!

bradleyjg 11y ago
Sarratt in his Treatise on the Game of Chess (1808) says: "When a player has pushed a Pawn to Queen, he is at liberty to make a second Queen, a third Rook, or any other piece which he may deem more useful for his attack or defense". While this doesn't explicitly say that he must promote to a piece of the same color, it implies it. After all if the piece could be promoted to either color it would make sense to say a third queen or a fifth rook rather than a second or third.
- wowaname 11y ago
  That doesn't really imply much. Having a fifth rook does not correlate at all to having a piece of the same or opposite colour. Regardless, based off that rule, a piece of the opposing colour would be defined by "any other peice [sic] which he may deem more useful for his attack" in that play, so it sounds perfectly legal to me.
  - mikeash 11y ago
    If you arrange your game just right, you can legally have up to ten rooks (or bishops or knights, or nine queens) of the same color on the board at once. (This will probably not be possible without the cooperation of the other player.)
- aidenn0 11y ago
  Not at all, it would be a third Rook of the alternate color.
jmpeax 11y ago
I wonder why it was introduced.

AnimalMuppet 11y ago

The article states clearly, more than once, that the move is not legal by current FIDE rules.

sgustard 11y ago

More on the rule history and this puzzle. https://en.wikipedia.org/wiki/Promotion_%28chess%29#1862_British_Chess_Association_rule https://en.wikipedia.org/wiki/Promotion_%28chess%29#1862_Bri... "The broad language of Law XIII also appears to allow promotion to any piece of either color. This led to the whimsical endgame study diagrammed at right. White is to play and checkmate in one move."