In the problem 65884 lichess reports 19.Nd4 as winning move, but also 19.Qh4 wins after:
19.Qh4,Qa6
20.Ng5,h6
21.Ne4
lichess.org/training/65884
19.Qh4,Qa6
20.Ng5,h6
21.Ne4
lichess.org/training/65884
Yes after it reaches depth 21 stocky realises that there is not much difference between the moves (6.4 to 5.4) Not a clear advantage so it should not be a puzzle.
19.Qh4 also wins. You are right.
Isn't a surprise is typical time to time find another solution to a exercises in books, teacher exercises, tactical software etc .
I remember one "positional" exercise in a class and the master say something like "in this position there are a sequence of obvious moves to avantatge". two people in the class propose a variation that force the exchange of the best minor piece of the other side and the master response was a logical manoeuvre with the tower. We put the two in the engine and the avaluation was very close.
Isn't a surprise is typical time to time find another solution to a exercises in books, teacher exercises, tactical software etc .
I remember one "positional" exercise in a class and the master say something like "in this position there are a sequence of obvious moves to avantatge". two people in the class propose a variation that force the exchange of the best minor piece of the other side and the master response was a logical manoeuvre with the tower. We put the two in the engine and the avaluation was very close.
The master was correct? Engines lie.
I have just posted it, because after more than 600 very interesting puzzles here on lichess, this is the first time I have encountered a puzzle with a double solution.
DrHack 1 hour ago #4
The master was correct? Engines lie.
Lie: noun
1.
a false statement made with deliberate intent to deceive; an intentional untruth; a falsehood
Engines don't tell the "whole truth".
I doubt their intent is to deliberately deceive, but you never know for sure!
The master was correct? Engines lie.
Lie: noun
1.
a false statement made with deliberate intent to deceive; an intentional untruth; a falsehood
Engines don't tell the "whole truth".
I doubt their intent is to deliberately deceive, but you never know for sure!
"The master was correct? Engines lie."
The variation of the master was obvius correct and contain a logical aim "activate the tower". However the other variation also was correct and contain a logical aim "eliminate the powerful minor piece of the enemy".
The morale of the history is "sometimes" puzzles and exercises contain a correct alternative solution.
The variation of the master was obvius correct and contain a logical aim "activate the tower". However the other variation also was correct and contain a logical aim "eliminate the powerful minor piece of the enemy".
The morale of the history is "sometimes" puzzles and exercises contain a correct alternative solution.
Also in lichess.org/training/66394, double solution:
30 Rf7, Qb8
31 Bb2 or Bxh6
both win.
Is possible to report somewhere problems with double solutions in order to remove them from training?
30 Rf7, Qb8
31 Bb2 or Bxh6
both win.
Is possible to report somewhere problems with double solutions in order to remove them from training?
This topic has been archived and can no longer be replied to.