Incorrect problem in Tactics Trainer

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http://www.chess.com/tactics/?id=77518

I was deducted points for getting the correct solution. I saw mate and attempted to play it and it game me an incorrect. Bf3+ on second move is soon to be mate. 

Avatar of Martin_Stahl
CSU_Dynasty wrote:

http://www.chess.com/tactics/?id=77518

I was deducted points for getting the correct solution. I saw mate and attempted to play it and it game me an incorrect. Bf3+ on second move is soon to be mate. 

Not incorrect. If you play Bf3+ on the second move then white takes your queen, Qxg5.

Avatar of Dynasty

Then hxg5 and then you double your rooks on the h file with an unstoppable mate. Before posting, I verified it with Stockfish. The problem is incorrect

Avatar of adumbrate

no silly it is not incorrect. if you did check with stockfish, then your stockfish sucks.



Avatar of kco

I have checked it out,the puzzle is correct. 

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Avatar of kco

That (comment above) did not happen in the real game, it was a Blitz, so the player may have not see the Bf3+.  

Avatar of Dynasty
skotheim2 wrote:

no silly it is not incorrect. if you did check with stockfish, then your stockfish sucks.

Enter this postion into a computer. This is an easy mate in 4. What program did you use to verify. Saying "stockfish sucks" is just unbelievable.

Avatar of Dynasty
kco wrote:

That (comment above) did not happen in the real game, it was a Blitz, so the player may have not see the Bf3+.  

kco, so you agree Bf3+ is better than Qxf4?

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is better but is doesn't mean the problem was incorrect.

Avatar of Dynasty

when I played Bf3+ in the puzzle, it said "incorrect" and deducted points! Therefore, the problem is incorrect since it has mulitple solutions. AND it didn't even pick the solution. 

Avatar of Martin_Stahl
CSU_Dynasty wrote:

when I played Bf3+ in the puzzle, it said "incorrect" and deducted points! Therefore, the problem is incorrect since it has mulitple solutions. AND it didn't even pick the solution. 

The puzzles on TT only will accept one solution and it is considered the best solution; i.e. the highest scoring solution. As stated Bf3+ on the second move is not the best solution so you go it wrong.

 

edit: looking more closely and with an engine, it does appear that Bf3+ is leading to mate, so that should be the solution.

Avatar of Dynasty
Martin_Stahl wrote:
CSU_Dynasty wrote:

when I played Bf3+ in the puzzle, it said "incorrect" and deducted points! Therefore, the problem is incorrect since it has mulitple solutions. AND it didn't even pick the solution. 

The puzzles on TT only will accept one solution and it is considered the best solution; i.e. the highest scoring solution. As stated Bf3+3 on the second move is not the best solution so you go it wrong.

My agruement is it IS the best solution. What is better than mate?! If its not mate, then explain why its not mate. It irrates me that people offer no explaination why my varation isn't the best

Avatar of Dynasty
Martin_Stahl wrote:
CSU_Dynasty wrote:

when I played Bf3+ in the puzzle, it said "incorrect" and deducted points! Therefore, the problem is incorrect since it has mulitple solutions. AND it didn't even pick the solution. 

The puzzles on TT only will accept one solution and it is considered the best solution; i.e. the highest scoring solution. As stated Bf3+ on the second move is not the best solution so you go it wrong.

edit: looking more closely and with an engine, it does appear that Bf3+ is leading to mate, so that should be the solution.

Bf3+ on second move scores -#6 while Qxf4 is not mate. Explain how Qxf4 is better

Avatar of Martin_Stahl

I edited my post above. You are correct and the puzzle should probably be changed.

Avatar of Dynasty
Martin_Stahl wrote:

I edited my post above. You are correct and the puzzle should probably be changed.

Thank you :)

Avatar of The_Ghostess_Lola

CSU_Dynasty is right here. And it hasn't been the 1st time those puzzles have been wrong....albeit seldom they are.

So great catch CSU ! R over to a8 and it's all over....Smile....

Avatar of adumbrate

I just realized that in the analysis the computer says only -2.6 on the final move when it is mate in 1 :P I don't use engines to prove my point though.

Either way, I think that the problem should be removed as it is a bad problem, and has to stop already after Bxf7+

Avatar of adumbrate

And I was on my phone so didnt care about checking it with my head :P

Avatar of SmyslovFan

Looks to me that CSU is correct. Even if a tactics problem has a mate in 3 and a mate in 4, it should accept both as correct or be tossed out. In real chess, it doesn't matter whether the mate is delayed a move. If it's solving compositions, that's another matter. But for tactics training, both are winners.

In this case, CSU's solution looks better than the official one!