What is considered insufficient material?

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Dark_Army
Martin_Stahl wrote:

The USCF has a couple of rules in regards to this.

 

One is Insufficient material to continue.

K vs K, K vs K with N or B, K+B vs K+B if both bishops are the same color, and no legal moves that could lead to checkmate by the opponent (so if there is a helpmate, it isn't insufficient).

 

For a win on time, the insufficient material for the player with time on the clock is a lone king, K plus B or N and no forced win, K + N + N if the player with no time does not have a pawn and there is no forced win.

 

So by USCF (14 E) rules, the position in post 1 is a win for black if white lets the time run out.

 

FIDE is the same (6.9 covers flag fall). Chess.com is a draw, unless something recently changed.

 

You mean this...

 

6.9      

Except where one of Articles 5.1.a, 5.1.b, 5.2.a, 5.2.b, 5.2.c applies, if a player does not complete the prescribed number of moves in the allotted time, the game is lost by that player. However, the game is drawn if the position is such that the opponent cannot checkmate the player’s king by any possible series of legal moves.

 

 

Now, does that only apply to situations where a player does not complete a prescribed number of moves?

Martin_Stahl

6.9 covers sudden death time controls, as well as X moves in Y time. It includes those where there rest of the moves have to be made. So, G/90,+30 would fall under that regulation as would 40/120,SD30 or something similar. 

 

In one time control, the prescribed number of moves is all of them grin.png

Dark_Army
Martin_Stahl wrote:

6.9 covers sudden death time controls, as well as X moves in Y time. It includes those where there rest of the moves have to be made. So, G/90,+30 would fall under that regulation as would 40/120,SD30 or something similar. 

 

In one time control, the prescribed number of moves is all of them 

 

Understood. The wording is seems a little unclear but I get it. Seems like a good rule. If white manages to get himself into a position like that, it should be required of him finish the game.

Martin_Stahl

It would be stalemate without the pawn and thus the game is over.

 

As soon as the position was reached with just K+N vs K it would be immediately drawn.

MrFahrenKnight

it's when you get all excited with a girl. she looks down and says, 'insufficient. .....'

bobthepig3636

K + dark B vs K is insufficient because the enemy king can stay on the white squares.

GregoryMorse
bobthepig3636 wrote:

K + dark B vs K is insufficient because the enemy king can stay on the white squares.

Except this is simply wrong because if the king is on the edge of the board it can be forces to alternate between dark and light squares. Obviously this dude failed math class and can't write proofs and posts nonsense without thinking, sadly enough