Bulldog Endgame Theory

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aronian22

This forum is for bulldog ending theory. You can find all the ending results below. All results are from the perspective of the first player.

 

King + Witch vs King= Draw

King + Rook vs King + Witch= Draw

King + Rook vs King+ Guard= Draw

King + Witch + Rook pawn vs King= Draw

King + Queen vs King + Guard= Draw

King + Knight + Knight vs King + Witch= Draw

King + Bishop + Bishop vs King + Guard= Draw

King + Knight + Knight vs King + Witch= Draw

King + Queen vs King + Guard + Knight + Knight= Draw

King + Pawn vs King + Witch= Draw (Unless the opposing king is behind the pawn.)

King + Queen vs King + Witch= Win

King + Guard vs King= Win

King + Time Thief + Guard vs King= Win

King + Time Thief + Pawn vs King= Win

King + Time Thief + Queen vs King= Win

King + Time Thief + Knight vs King= Win 

King + Time Thief + Bishop vs King= Win 

King + Time Thief + Rook vs King= Win

King + Joker vs King= Win

King + Bishop + Bishop + Witch vs King + Guard= Win

King + Bishop + Bishop vs King + Witch= Win

King + Hunter vs King= Win

King + Witch + non rook pawn vs King= Win

King + Guard + Bishop + Knight vs King + Queen= Win

King + Guard vs King + Witch= Win

King + Guard + Guard vs King= Unlikely but a win

King + Time Thief vs King= Win with conditional check, draw without.

 

Did I miss any? Are my assessments wrong? Let me know and I'll fix it, I want this to be the most accurate place to find bulldog endgame theory.

evert823

Following this

Oka1493

same

Grayson1e4e6

King and guard vs. king should be a win for the guard and king

aronian22
MISTER_McCHESS wrote:
kingsindianattack7 wrote:

King and guard vs. king should be a win for the guard and king

agreed,

There is a game that was recorded when queens could only move 1 sq in any direction and it was a K+Q/K Endgame, and K+Q Won

I did some analysis and now I'm not sure. Do you think you could post the game or maybe some of your own analysis before I change it?

aronian22

Yeah, neither do I. Do you have a link?

 

Marks1420

K+G vs K is an easy win. You missed K+G v K+Q, which is a draw. 

aronian22

Ok good to know.

vickalan
aronian22 wrote:

...

King + Witch + Rook pawn vs King= Draw

...

Interesting theory!happy.png

What does this one mean? A pawn on a file with a rook?

And if that's a draw, then: 
King + Witch + (any) pawn vs King = Is also a Draw?

PandasAwesome
vickalan wrote:
aronian22 wrote:

...

King + Witch + Rook pawn vs King= Draw

...

Interesting theory!

What does this one mean? A pawn on a file with a rook?

And if that's a draw, then: 
King + Witch + (any) pawn vs King = Is also a Draw?

I would think that any pawn other than rook pawn wins for the King + Witch + any pawn. This is because you can just move your witch around to make zugzwang.

aronian22
PandasAwesome wrote:
vickalan wrote:
aronian22 wrote:

...

King + Witch + Rook pawn vs King= Draw

...

Interesting theory!

What does this one mean? A pawn on a file with a rook?

And if that's a draw, then: 
King + Witch + (any) pawn vs King = Is also a Draw?

I would think that any pawn other than rook pawn wins for the King + Witch + any pawn. This is because you can just move your witch around to make zugzwang.

Yes, in most cases, the side with the witch can waste a tempo in a normally drawn position.

With a rook pawn though, it doesn't really matter because there is no possible winning position and no use for the witch.

 

 

Martin0

With rook-pawns, the stronger side wins if the opponents king is not within the square of the pawn or if the stronger sides king can reach a key square. For example, whites a-pawn has the key squares b7 and b8.

It's true that having a witch does not help your rook-pawns promote though.

captaintugwash

How about K+N+N vs K+W?

PandasAwesome
captaintugwash wrote:

How about K+N+N vs K+W?

Gotta be a draw, the witch can sacrifice itself every turn, since 2 knights vs. king is draw.

PandasAwesome

how about K + Q vs K + G + B + N? A lot of pieces but could be interesting theory.

captaintugwash
PandasAwesome wrote:
captaintugwash wrote:

How about K+N+N vs K+W?

Gotta be a draw, the witch can sacrifice itself every turn, since 2 knights vs. king is draw.

The witch doesn't have to be captured. 

I mean, I'm 99% sure it's theoretically possible to force checkmate, but the question is can it be done fast enough.

captaintugwash
PandasAwesome wrote:

how about K + Q vs K + G + B + N? A lot of pieces but could be interesting theory.

Well the queen obviously isn't winning. It's either a draw or a win for black.

PandasAwesome
captaintugwash wrote:
PandasAwesome wrote:
captaintugwash wrote:

How about K+N+N vs K+W?

Gotta be a draw, the witch can sacrifice itself every turn, since 2 knights vs. king is draw.

The witch doesn't have to be captured. 

I mean, I'm 99% sure it's theoretically possible to force checkmate, but the question is can it be done fast enough.

Wanna play a game with K + N + N vs K + W so we can find out if it's actually a draw?

captaintugwash

The reason K+N+N vs K is a theoretical draw is because white can't waste a tempo. He basically stalemates black trying to checkmate him. But if black has a witch, he isn't stalemated, giving white the extra tempo necessary to force checkmate. But there's the 50-move rule to take into account.

 

I doubt I could play the endgame accurately enough to give us an answer to the question.

PandasAwesome

True. I still am curious on this though: K + Q vs K + G + B + N