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A question with the rules of chess

Posted: Tue Sep 08, 2015 11:52 pm
by h1a8
If one side has king with two Knights against a king with one knight then can the side with a single Knight claim a draw? Is that a rule of all chess or a rule of some tournaments or not a rule anywhere?

Re: A question with the rules of chess

Posted: Wed Sep 09, 2015 1:29 am
by Vinvin
h1a8 wrote:If one side has king with two Knights against a king with one knight then can the side with a single Knight claim a draw? Is that a rule of all chess or a rule of some tournaments or not a rule anywhere?
I have never seen that rule.

The longest mate with KNNKN is 7 moves (there are 38 positions with mates in 7) :

[d]7n/8/8/3N4/1N1K4/8/8/k7 w - - 0 1

Re: A question with the rules of chess

Posted: Wed Sep 09, 2015 2:19 am
by Terry McCracken
Much like having a pawn on the board, the losing side can have it's king fixed without drawing and has to move their Night allowing checkmate.

Re: A question with the rules of chess

Posted: Wed Sep 09, 2015 6:42 am
by Look
Vinvin wrote:
h1a8 wrote:If one side has king with two Knights against a king with one knight then can the side with a single Knight claim a draw? Is that a rule of all chess or a rule of some tournaments or not a rule anywhere?
I have never seen that rule.

The longest mate with KNNKN is 7 moves (there are 38 positions with mates in 7) :

[d]7n/8/8/3N4/1N1K4/8/8/k7 w - - 0 1
It seems to me, the black knight prevents the game from being stalemate.

Re: A question with the rules of chess

Posted: Wed Sep 09, 2015 7:59 pm
by gbtami
h1a8 wrote:If one side has king with two Knights against a king with one knight then can the side with a single Knight claim a draw? Is that a rule of all chess or a rule of some tournaments or not a rule anywhere?
There is no such a rule.
See http://www.fide.com/fide/handbook.html? ... ew=article

7n/8/8/3N4/1N1K4/8/8/k7 w - - 0 1

Posted: Thu Sep 10, 2015 1:05 am
by sje
[d]7n/8/8/3N4/1N1K4/8/8/k7 w - - 0 1[/d]
Mate in seven: 1. Kc3 Kb1 2. Nd3 Ka2 3. Kb4 Ka1 4. Kb3 Kb1 5. Nc3+ Ka1 6. Nb4 Nf7 7. Nc2#