Gote move vs sente move in yose
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
Suppose the would-be sente option is such.
The local endgame has a gote option and a sente option. The gote option provides a tentative gote count of the local endgame. The sente option provides a tentative sente count of the local endgame. Similarly, tentative move values.
Such tentative values can be compared to characterise the local endgame as - typically behaving as - a local gote or sente. If it is characterised as a local gote, the tentative gote count is the count. If it is characterised as s local sente, the tentative sente count is the count.
Nevertheless, a local endgame with gote and sente options characterised as either local gote or local sente can exceptionally have the atypical behaviour in some global contexts.
The local endgame has a gote option and a sente option. The gote option provides a tentative gote count of the local endgame. The sente option provides a tentative sente count of the local endgame. Similarly, tentative move values.
Such tentative values can be compared to characterise the local endgame as - typically behaving as - a local gote or sente. If it is characterised as a local gote, the tentative gote count is the count. If it is characterised as s local sente, the tentative sente count is the count.
Nevertheless, a local endgame with gote and sente options characterised as either local gote or local sente can exceptionally have the atypical behaviour in some global contexts.
-
gennan
- Lives in gote
- Posts: 497
- Joined: Fri Sep 22, 2017 2:08 am
- Rank: EGF 3d
- GD Posts: 0
- Universal go server handle: gennan
- Location: Netherlands
- Has thanked: 273 times
- Been thanked: 147 times
Re: Gote move vs sente move in yose
If I made no mistakes in post #28, I'll try to fix the mistakes my post #24 along the same lines.
As C is a sente follow-up of A for white, and sente gains nothing, A would have the same count as C: count = -5. I suppose that would be the gote count of A.
And B (with count 2) would be a reverse sente continuation for black with miai value 7.
So this partial tree ...
... whould have these counts:
I think I can also tentatively replace D in the tree from post #28 with this partial tree from A.
So then I get:
Would root position F then keep its count of 2 from post #24, or would it get count 3.75 with local temperature 8.75?
Either way, I think white chosing A with count -5 will lead black to chose B with count 2 if the ambient temperature is < 7, because black's reverse sente has miai value 7.
Comparing F's count of 3.75 here with the count of 2 in post #24, does it mean that (given we have reached F and white will play a move there) I can assume that the ambient temperature is already < 10.5, otherwise black would have chosen G already or white would have chosen D already to prevent black from reaching G?
When we have F with white to play, is there an ambient temperature range where chosing A is better for white than chosing D? Could it be the case for ambient temperatures > 7?
As C is a sente follow-up of A for white, and sente gains nothing, A would have the same count as C: count = -5. I suppose that would be the gote count of A.
And B (with count 2) would be a reverse sente continuation for black with miai value 7.
So this partial tree ...
Code: Select all
A
/ \
B CCode: Select all
-5
/ \
2 -5So then I get:
Code: Select all
__ F __
/ \
G A
/ \ / \
H J B C
Code: Select all
(8.75?) _ 3.75? _
/ \
(3.5) 12.5 -5
/ \ / \
16 9 2 -5
Comparing F's count of 3.75 here with the count of 2 in post #24, does it mean that (given we have reached F and white will play a move there) I can assume that the ambient temperature is already < 10.5, otherwise black would have chosen G already or white would have chosen D already to prevent black from reaching G?
When we have F with white to play, is there an ambient temperature range where chosing A is better for white than chosing D? Could it be the case for ambient temperatures > 7?
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
Your post #28:
So far we can say that the initial position F has the tentative sente count 2. Whether this is the count of F we still need to determine by characterising F as a local gote, local sente or ambiguous.
After Black 1, White 2 - Black 3 is a sente option while White 5 is a a gote option (not an alternative sente option: P18 - P19). Our master complicator Gerard Taille has woven (so far detected at least) three sente versus gote option choices in the problem position to better prove his point that value calculations are too complicated;) Or accidentally?
2 EDITs
Suppose the monkey is sente indeed.gennan wrote:So can we say that this position has count 2, because white has a sente sequence to reach that count
So far we can say that the initial position F has the tentative sente count 2. Whether this is the count of F we still need to determine by characterising F as a local gote, local sente or ambiguous.
Informally.and 'sente gains nothing'?
White 2 might or might not be correct. Omitting it has the advantage of the supposed follow-up White 5 being more valuable. Further analysis is needed to study both variations.
After Black 1, White 2 - Black 3 is a sente option while White 5 is a a gote option (not an alternative sente option: P18 - P19). Our master complicator Gerard Taille has woven (so far detected at least) three sente versus gote option choices in the problem position to better prove his point that value calculations are too complicated;) Or accidentally?
2 EDITs
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
Please do not write sente trees as gote trees! Too confusing!gennan wrote: As C is a sente follow-up of A
Code: Select all
A / \ B C
From A, either player might continue and has his conditions for doing so.white chosing A with count -5 will lead black to chose B with count 2 if the ambient temperature is < 7, because black's reverse sente has miai value 7.
Wishful thinking that things would be simple.assume that the ambient temperature is already < 10.5, otherwise black would have chosen G already or white would have chosen D already to prevent black from reaching G?
What D? B? If B, yes. At low temperature, there are both options with choice depending on value conditions. (And Black to move has a more complicated choice. During the late endgame, I could construct an extremely rare example in which the following three lines are all correct due to a totally unrealistic 19.5 value drop in the environment: 1) reverse sente, 2) elsewhere and opponent chooses gote option, 3) elsewhere and opponent chooses sente option.)When we have F with white to play, is there an ambient temperature range where chosing A is better for white than chosing D?
1 EDIT
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
We simplify all the time, e.g., we approximate by assuming an ideal environment. If an early endgame calculation problem is too difficult to solve using either a) exact local value calculations or b) the method of global reading and counting, we can
solve it by simplifying the problem itself!
We can make further simplifying assumptions as follows. We use a locale.
Suppose certain long alternating sequences, including certain sente sequences, are worth playing successively.
Assume that this is Black's correct local move:
Now, start afresh!
EDIT: further simplified the position.
-
Gérard TAILLE
- Gosei
- Posts: 1346
- Joined: Sun Aug 23, 2020 2:47 am
- Rank: 1d
- GD Posts: 0
- Has thanked: 21 times
- Been thanked: 57 times
Re: Gote move vs sente move in yose
I simply assumed the quality of your theory is quite similar to Bill's one and I find this last theory quite valuable.RobertJasiek wrote:Since you do not know my theory, why have you praised it?;)Gérard TAILLE wrote: Let's assume the ambiant temperature is high. If you decide to play in the local position that means that the value of a move in this local position is also high and more or less equal to the ambiant temperature right?
Now, seeing this strange theorem I have serious doubt concerning your theory. Assuming it exists locally both a gote option and a sente option I cannot believe that you can ignore the sente option only on condition the temperature is high.RobertJasiek wrote: In the case of a high temperature T, compare it to the gote move value Mgote to decide whether to play locally the gote option!
T ? Mgote
Simple, isn't it?:) The proof has been quite an ordeal though...! I have needed to exclude the sente option.
You can profit from my theorem that only the gote option matters! (If the temperature is high.)
For me either you use another hidden assupmtion on the position or you made a mistake in your proof. I hope it is the first case!
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
The quality is on the same level. For non-ko, non-pure-CGT endgame theory, I have written and proved ca. 6 times as many theorems, but a significant part of them would have been impossible without his prior informal, conceptual ideas. We both have studied ko theory. He has provided several times more pure-CGT endgame theory than me. So on the pure theorem count, I win hands down. Overall, our achievements play in the same league.Gérard TAILLE wrote:I simply assumed the quality of your theory is quite similar to Bill's one and I find this last theory quite valuable.
"We study a local endgame with one player's gote and sente options in an environment of simple gotes without follow-ups. The temperature T is high with F < T, where F is the [sente option's] follow-up move value [...] the tentative gote move value MGOTE [...]Now, seeing this strange theorem I have serious doubt concerning your theory. Assuming it exists locally both a gote option and a sente option I cannot believe that you can ignore the sente option only on condition the temperature is high.
For me either you use another hidden assupmtion on the position or you made a mistake in your proof. I hope it is the first case!
Proposition 132
[early endgame, creator's perspective and start, high temperature]
If F < T, it is a good approximation that the creator starts
- in the environment if T ≥ MGOTE,
- locally with the gote option if T ≤ MGOTE.
[... Proof filling one printing page applying proposition 66, whose proof covers half a page, and theorem 121, whose proof refers corollary 67 and proposition 120 for the late endgame, whose proof covers more than one page ...]
Proposition 133
[early endgame, preventer's perspective and start, high temperature]
If F < T, it is a good approximation that the preventer starts
- in the environment if T ≥ MGOTE,
- locally if T ≤ MGOTE.
Proof [filling almost one and a half printing pages applying proposition 66 and theorem 125 for the late endgame, whose proof also refers to proposition 124, whose proof covers one page...]
Theorem 134 [early endgame, high temperature]
If F < T, it is a good approximation that the starting player starts
- in the environment if T ≥ MGOTE,
- locally if T ≤ MGOTE (the creator chooses the gote option).
Proof
Combine propositions 132 + 133 and their proofs.□" [22]
No surprise you have doubts before reading the proofs;)
Citation of an extract from the proof of proposition 132:
"MSENTE < F is a necessary condition for the sente option itself being a local sente. For the average (MSENTE + F) / 2 of MSENTE and F, we have MSENTE < (MSENTE + F) / 2 < F. We have assumed a high temperature, that is, F < T. The tentative conditions suggest T ≤ (MSENTE + F) / 2 as a necessary condition for starting locally with the sente option. In summary, for starting locally with the sente option, we get the conditions MSENTE < (MSENTE + F) / 2 < F < T ≤ (MSENTE + F) / 2.
Since this is a contradiction to the assumption in the tentative conditions of the existing case 'starting locally with the sente option', it does not exist." [22]
Simply speaking, in conclusion, proved by contradiction to the assumption of a high temperature!
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
The approximations include
- the assumption of an ideal environment,
- averaging the detail of an even or odd number of values in the environment,
- while the applied late endgame proofs presume single moves instead of longer sequences, which occur in practice in every local endgame with gote and sente options, the assumption is that this detail can be ignored during the early endgame with its still rather dense environment because any local follow-up simply "vanishes" in the environment. Practical experience confirms this but maths needs to take this as an assumption because there are counter-examples for the late endgame so, in principle, pathological counter-examples could be constructed for the early endgame as if it were a rich late endgame.
- the assumption of an ideal environment,
- averaging the detail of an even or odd number of values in the environment,
- while the applied late endgame proofs presume single moves instead of longer sequences, which occur in practice in every local endgame with gote and sente options, the assumption is that this detail can be ignored during the early endgame with its still rather dense environment because any local follow-up simply "vanishes" in the environment. Practical experience confirms this but maths needs to take this as an assumption because there are counter-examples for the late endgame so, in principle, pathological counter-examples could be constructed for the early endgame as if it were a rich late endgame.
-
Gérard TAILLE
- Gosei
- Posts: 1346
- Joined: Sun Aug 23, 2020 2:47 am
- Rank: 1d
- GD Posts: 0
- Has thanked: 21 times
- Been thanked: 57 times
Re: Gote move vs sente move in yose
I do not understand Robert.RobertJasiek wrote:Gérard TAILLE wrote:I simply assumed the quality of your theory is quite similar to Bill's one and I find this last theory quite valuable.
"We study a local endgame with one player's gote and sente options in an environment of simple gotes without follow-ups. The temperature T is high with F < T, where F is the [sente option's] follow-up move value [...] the tentative gote move value MGOTE [...]
Proposition 132
[early endgame, creator's perspective and start, high temperature]
If F < T, it is a good approximation that the creator starts
- in the environment if T ≥ MGOTE,
- locally with the gote option if T ≤ MGOTE.
[... Proof filling one printing page applying proposition 66, whose proof covers half a page, and theorem 121, whose proof refers corollary 67 and proposition 120 for the late endgame, whose proof covers more than one page ...]
Proposition 133
[early endgame, preventer's perspective and start, high temperature]
If F < T, it is a good approximation that the preventer starts
- in the environment if T ≥ MGOTE,
- locally if T ≤ MGOTE.
Proof [filling almost one and a half printing pages applying proposition 66 and theorem 125 for the late endgame, whose proof also refers to proposition 124, whose proof covers one page...]
Theorem 134 [early endgame, high temperature]
If F < T, it is a good approximation that the starting player starts
- in the environment if T ≥ MGOTE,
- locally if T ≤ MGOTE (the creator chooses the gote option).
Proof
Combine propositions 132 + 133 and their proofs.□" [22]
No surprise you have doubts before reading the proofs;)
Citation of an extract from the proof of proposition 132:
"MSENTE < F is a necessary condition for the sente option itself being a local sente. For the average (MSENTE + F) / 2 of MSENTE and F, we have MSENTE < (MSENTE + F) / 2 < F. We have assumed a high temperature, that is, F < T. The tentative conditions suggest T ≤ (MSENTE + F) / 2 as a necessary condition for starting locally with the sente option. In summary, for starting locally with the sente option, we get the conditions MSENTE < (MSENTE + F) / 2 < F < T ≤ (MSENTE + F) / 2.
Since this is a contradiction to the assumption in the tentative conditions of the existing case 'starting locally with the sente option', it does not exist." [22]
Simply speaking, in conclusion, proved by contradiction to the assumption of a high temperature!
For me if you assume one player has a gote and a sente options then, if the temperature is T <= MGOTE, it is always a good approximation to play locally and OC, at such temperature, the two options (gote and sente) must exist.
Taking the sente option that means in particular that T < F.
Assuming F < T being in contradiction with the existence of a sente option, if you assume F < T, then you assume there are no sente option.
IOW your theorem can never be applied.
Because I surely missed sommething can you simply give us an exemple of its application?
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
This is another good observation. It says, however, nothing about which play is correct: local gote option, local sente option or environment.if the temperature is T <= MGOTE, it is always a good approximation to play locally
At any temperature, both options are on the board. For certain temperatures, the question of existence is whether playing in the sente option with the alleged value conditions exists. For this study in the proof, the comparison is F < T, that is, it is not a comparison between T and MGOTE. It is application of the theorem for F < T, when, for deciding between local play in the gote option or the environment, the comparison between T and MGOTE is used.at such temperature, the two options (gote and sente) must exist.
So my theorem suggests.Taking the sente option that means in particular that T < F.
The argument in the proof is about "non-existence of choosing to play in the sente option having, in particular, its tentative value condition T ≤ (MSENTE + F) / 2". That is, the proof does not dispute the existing sente option on the board but disputes choosing play in the sente option at high temperature.Assuming F < T being in contradiction with the existence of a sente option, if you assume F < T, then you assume there are no sente option.
The contradiction is not in the theorem, which applies when F < T, but part of its proof is by contradiction, which uses this assumption in the theorem.theorem can never be applied
For quite a few examples of application, see [14], [22], [23]. If somebody provides the sequences and values for an example (such as the simplified problem), I show its application. Needless to say, 42 is the answer to all questions (after I spent three days to find such examples):can you simply give us an exemple of its application?
In practice, such environments do not occur. In particular, not during the early endgame.
***
BTW, not playing sente prematurely should not surprise you. Here is the theorem for an ordinary local endgame with one player's follow-up during the early endgame at high temperature:
"Theorem 89
[early endgame, starting player's perspective, high temperature, conclusion]
If F < T, it is a good approximation that the starting player starts
- in the environment if MGOTE ≤ T,
- locally if MGOTE ≥ T." [22]
Hence, during the early endgame at high temperature, the behaviour of a local endgame with gote and sente options is essentially the same as of an ordinary local endgame with one player's follow-up.
-
Gérard TAILLE
- Gosei
- Posts: 1346
- Joined: Sun Aug 23, 2020 2:47 am
- Rank: 1d
- GD Posts: 0
- Has thanked: 21 times
- Been thanked: 57 times
Re: Gote move vs sente move in yose
OK let me try to understand the meaning of this example.RobertJasiek wrote:
Is it a good understanding to say that a move at "a" ot "b" is a local move while a move at "c" is considered to be in the environment?
If it is true does that mean that you consider black "a" as a sente option and black "b" as gote option?
-
Gérard TAILLE
- Gosei
- Posts: 1346
- Joined: Sun Aug 23, 2020 2:47 am
- Rank: 1d
- GD Posts: 0
- Has thanked: 21 times
- Been thanked: 57 times
Re: Gote move vs sente move in yose
Because FD is sente I prefer drawing the tree as follows:gennan wrote:Code: Select all
F / \ G D / \ H JCode: Select all
2 / \ (3.5) 12.5 2 / \ 16 9
Code: Select all
_F_
/ \
G D'
/ \ / \
H J D -BIG
Code: Select all
_2_
/ \
(3.5) 12.5 x
/ \ / \
16 9 2 -BIG
Now what is the answer to my initial question (what is the best intitial white move : a or b?
Secondary question. How can you give the answer to this initial question with the minimum calculation?
Hint : I just want to know the best move. IOW I do not ask for the miai value of the initial position.
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
Sry, LOL!Gérard TAILLE wrote:OK let me try to understand the meaning of this example.RobertJasiek wrote:
Is it a good understanding to say that a move at "a" ot "b" is a local move while a move at "c" is considered to be in the environment?
The environment comprises T and U (I cannot put captital letters or T1 on this board).
If the preventer Black does not play local reverse sente but starts in the environment, then the creator White chooses the gote option G or the sente option S. As you should have understood by tactical reading. Now find all 42s!
-
RobertJasiek
- Judan
- Posts: 6272
- Joined: Tue Apr 27, 2010 8:54 pm
- GD Posts: 0
- Been thanked: 797 times
- Contact:
Re: Gote move vs sente move in yose
But, but... this depends on the whole board!Gérard TAILLE wrote:what is the best intitial white move : a or b?
What is truth, eh, calculation? Are counting a score or comparing scores of settled whole board positions "calculations", in your opinion? If not, use reading and counting with zero calculations. If yes, draw the right lottery ticket with zero calculations;)How can you give the answer to this initial question with the minimum calculation?
-
Gérard TAILLE
- Gosei
- Posts: 1346
- Joined: Sun Aug 23, 2020 2:47 am
- Rank: 1d
- GD Posts: 0
- Has thanked: 21 times
- Been thanked: 57 times
Re: Gote move vs sente move in yose
OK then let's assume black plays in the environment.RobertJasiek wrote:
The environment comprises T and U (I cannot put captital letters or T1 on this board).
If the preventer Black does not play local reverse sente but starts in the environment, then the creator White chooses the gote option G or the sente option S. As you should have understood by tactical reading. Now find all 42s!
Now it is white to play in the followibg position:
Considering only the local position :
if black plays first at "s" we reach a position R with a count B+41
if white plays first at "g" then white is gote and we reach a position G with a count B+1
if white plays first at "s" then white gets sente and we reach a position S with a count B+2
Now, if your theorem can be applied to this position, that means that F < T.
Robert, what is the value of F and T in this example, in order to apply your theorem?