Don Dailey you need to teach underpromotion to Komodo!

[mcostalba]

Thanks Uri for showing what I bave been saying since my original post that Komodo 32 3 32bit has a stalemate bug

No, you said a different thing. You said that Komodo does not supports underpromotions (this is even the title of the thread).

You are (pourposely) messing up a little bit here, probably this is the standard behaviour in main forum and I should not care too much...

[pichy]

Thanks Uri for showing what I bave been saying since my original post that Komodo 32 3 32bit has a stalemate bug

No, you said a different thing. You said that Komodo does not supports underpromotions (this is even the title of the thread).

You are (pourposely) messing up a little bit here, probably this is the standard behaviour in main forum and I should not care too much...

Por favor aprendes a interpretar el Ingles Mejor
Leia por favor mais com cuidado

What I said is that the previous version of Komodo which is version 32 3 32bit does Not understand underpromotion and I even show you a game that I played to demonstrate that point. I also stated that the next version of Komodo which is an experiment that Don Dailey is working on was previously fixed, after I indicated the problem:shock:

[hgm]

I do not know about komodo4 because I do not have it but komodo3 has some stalemate bug so it does not see the underpromtion.


New game
8/2P5/8/8/3r4/8/2K5/k7 w - - 0 1

Analysis by Komodo32 3 32bit:

1.c7-c8Q Rd4-a4 2.Qc8-c3+
+- (2.28) Depth: 1 00:00:00
1.c7-c8Q Rd4-a4 2.Qc8-c3+ Ka1-a2 3.Qc3-b2#
+- (#3) Depth: 2 00:00:00

(, 16.04.2012)

I don't get it. If Komodo can't see the stalemate, it should always think the position is won, wheter it considers Rook promotions or not, because promotion to Q in the Saavedra line also easily wins if you discard the stalemate. Yet, in the founding post of this thread, Komodo reports 0.00 scores. The only way to get those is by thinking you can force a stalemate.

Are we talking about different Komodo versions now?

[mcostalba]

Por favor aprendes a interpretar el Ingles Mejor
Leia por favor mais com cuidado

I am not spanish (nor you I guess) and I have understood clearly what you have written. You are the kind of person that wants to have always right even (especially) when you are wrong. I don't like to mess with this kind of people so Au revoir mon ami !

[pichy]

I do not know about komodo4 because I do not have it but komodo3 has some stalemate bug so it does not see the underpromtion.


New game
8/2P5/8/8/3r4/8/2K5/k7 w - - 0 1

Analysis by Komodo32 3 32bit:

1.c7-c8Q Rd4-a4 2.Qc8-c3+
+- (2.28) Depth: 1 00:00:00
1.c7-c8Q Rd4-a4 2.Qc8-c3+ Ka1-a2 3.Qc3-b2#
+- (#3) Depth: 2 00:00:00

(, 16.04.2012)

I don't get it. If Komodo can't see the stalemate, it should always think the position is won, wheter it considers Rook promotions or not, because promotion to Q in the Saavedra line also easily wins if you discard the stalemate. Yet, in the founding post of this thread, Komodo reports 0.00 scores. The only way to get those is by thinking you can force a stalemate.

Are we talking about different Komodo versions now?

That is the point here Komodo 3 can't predict the next best move, if Komodo see the correct move following promotion to a Queen it should also play Rc4+ NOT Rd4-a4 to force the Stalemate.

PS: Notice that Komodo think like that only when you give the Black side to play, but if you give it the White side it will find the correct underpromotion to a Rook. I would like to see the Analysis of Don Dailey experimental program (to be released soon) which he already fixed.

[pichy]

I do not know about komodo4 because I do not have it but komodo3 has some stalemate bug so it does not see the underpromtion.


New game
8/2P5/8/8/3r4/8/2K5/k7 w - - 0 1

Analysis by Komodo32 3 32bit:

1.c7-c8Q Rd4-a4 2.Qc8-c3+
+- (2.28) Depth: 1 00:00:00
1.c7-c8Q Rd4-a4 2.Qc8-c3+ Ka1-a2 3.Qc3-b2#
+- (#3) Depth: 2 00:00:00

(, 16.04.2012)

I don't get it. If Komodo can't see the stalemate, it should always think the position is won, wheter it considers Rook promotions or not, because promotion to Q in the Saavedra line also easily wins if you discard the stalemate. Yet, in the founding post of this thread, Komodo reports 0.00 scores. The only way to get those is by thinking you can force a stalemate.

Are we talking about different Komodo versions now?

That is the point here Komodo 3 can't predict the next best move, if Komodo see the correct move following promotion to a Queen it should also play Rc4+ NOT Rd4-a4 to force the Stalemate.

PS: Notice that Komodo think like that only when you give the Black side to play, but if you give it the White side it will find the correct underpromotion to a Rook. I would like to see the Analysis of Don Dailey experimental program (to be released soon) which he already fixed.

This is the strangest thing that I have seen, when you give White to Komodo 3 it promote to a Rook


[Event "?"]
[Site "?"]
[Date "2012.04.16"]
[Round "?"]
[White "Komodo3-64"]
[Black "Pichy"]
[Result "*"]
[BlackElo "2200"]
[WhiteElo "3050"]
[TimeControl "0+5"]
[SetUp "1"]
[FEN "8/8/1KP5/3r4/8/8/8/k7 w - - 0 1"]
[WhiteType "program"]
[BlackType "human"]

1. c7 Rd6+ 2. Kb5 Rd5+ 3. Kb4 Rd4+ 4. Kc3 Rd1 5. Kc2 Rd4 6. c8=R *

Here is the final Position which in this case I don't have to continue to realize that it is a win for White
[d]2R5/8/8/8/3r4/8/2K5/k7 b - - 0 6

[hgm]

PS: Notice that Komodo think like that only when you give the Black side to play, but if you give it the White side it will find the correct underpromotion to a Rook. I would like to see the Analysis of Don Dailey experimental program (to be released soon) which he already fixed.

That is obviously not true. In Uri's post Komodo is clearly thinking for white, and it does not find the under-promotion, but on the contrary wants to promote to Queen (and thinks it is won: +2.28 or #3).

[Uri Blass]

I do not know about komodo4 because I do not have it but komodo3 has some stalemate bug so it does not see the underpromtion.


New game
8/2P5/8/8/3r4/8/2K5/k7 w - - 0 1

Analysis by Komodo32 3 32bit:

1.c7-c8Q Rd4-a4 2.Qc8-c3+
+- (2.28) Depth: 1 00:00:00
1.c7-c8Q Rd4-a4 2.Qc8-c3+ Ka1-a2 3.Qc3-b2#
+- (#3) Depth: 2 00:00:00

(, 16.04.2012)

I don't get it. If Komodo can't see the stalemate, it should always think the position is won, wheter it considers Rook promotions or not, because promotion to Q in the Saavedra line also easily wins if you discard the stalemate. Yet, in the founding post of this thread, Komodo reports 0.00 scores. The only way to get those is by thinking you can force a stalemate.

Are we talking about different Komodo versions now?

I used komodo3 32 bits.
My computer is busy now in other tasks but
I will check later what it says in the initial position of this thread.

It is possible that the stalemate bug cause Komodo to miss stalemate only in part of the cases and in the root position it does not miss the stalemate and I did not check it(Note also that I found that komodo3 can promote to a rook in a different position when promotion to a queen force immediate stalemate and not allow some stalemate combination).

[pichy]

I do not know about komodo4 because I do not have it but komodo3 has some stalemate bug so it does not see the underpromtion.


New game
8/2P5/8/8/3r4/8/2K5/k7 w - - 0 1

Analysis by Komodo32 3 32bit:

1.c7-c8Q Rd4-a4 2.Qc8-c3+
+- (2.28) Depth: 1 00:00:00
1.c7-c8Q Rd4-a4 2.Qc8-c3+ Ka1-a2 3.Qc3-b2#
+- (#3) Depth: 2 00:00:00

(, 16.04.2012)

I don't get it. If Komodo can't see the stalemate, it should always think the position is won, wheter it considers Rook promotions or not, because promotion to Q in the Saavedra line also easily wins if you discard the stalemate. Yet, in the founding post of this thread, Komodo reports 0.00 scores. The only way to get those is by thinking you can force a stalemate.

Are we talking about different Komodo versions now?

I used komodo3 32 bits.
My computer is busy now in other tasks but
I will check later what it says in the initial position of this thread.

It is possible that the stalemate bug cause Komodo to miss stalemate only in part of the cases and in the root position it does not miss the stalemate and I did not check it(Note also that I found that komodo3 can promote to a rook in a different position when promotion to a queen force immediate stalemate and not allow some stalemate combination).

[pichy]

PS: Notice that Komodo think like that only when you give the Black side to play, but if you give it the White side it will find the correct underpromotion to a Rook. I would like to see the Analysis of Don Dailey experimental program (to be released soon) which he already fixed.

That is obviously not true. In Uri's post Komodo is clearly thinking for white, and it does not find the under-promotion, but on the contrary wants to promote to Queen (and thinks it is won: +2.28 or #3).

It is very simple to test it, simply use that same computer that you are using to to post here, and first play this ending versus Komodo 32 3 32bit as White and then reverse side you take Black and let Komodo play with White