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Nice idea piphilologist but unfortunately even removing black's queen doesn't allow the puzzle to finish as both Bd2 +0.7, and Bf4 -0.02 win the white queen, the first for a bishop, the second move for a rook, and the difference between the two moves is not enough.
this is what my engine (scid) is saying:
nate23, scid is correctly identifying there are other winning moves eg.12...Bd2+ (-11.82) and 12...Bf4 (-10.10). 12...Bd2+ would only be accepted if all other moves were no better than -1. Perhaps you thought Bf4 would be accepted if its evaluation were no better than -10.82? The important thing to remember is that each move in the puzzle should be the only way to win. Imagine how you would feel if you were playing tactics trainer and chose 12...Bf4 only to be told you were wrong and lose 16 points. piphilologist had a nice idea to save the puzzle by removing the black queen but 12...Bd2 is still not +2.5 greater than the next best move 12...Bf4
How about removing the white f-pawn and the black queen so then only Bd2 wins the queen.
(i know this is going to end up nothing like the original puzzle lol)
Please add your puzzle to this forum topic if :
Each best move is at least +2.5 better than the next best move with the next best move having a value of less than +0.3-1.0 (higher end of this range ok if the main move is very strong)
Examples not allowed :
solution move forced mate, next best move mate in more moves
solution move forced mate, next best move greater than +1.0
So at each step the solution move must be the only winning move (otherwise the problem is 'ambiguous'), or only move to prevent a loss (for example perpetual check or stalemate)
Just wondering if you can edit tactics. just did Tactic# 21279 where the final move a lot of people including me failed because there are several easily winning options on the final move. I know its not the point of this thread but if possible could you could you cut the final move off?
Oops! I thought that the best move had to be 1.5 points ahead of the next best move. We were both looking at the same evaluations, but coming away with different ideas. I will make sure that my next tactics fit criteria. thanks for doing this!
That first one up there is an original composition. This one is a modified position in the end of one of my games where Black wins major material.
To start the puzzle, White first plays 1. Rg1??, and the person goes from there.
OKAY - Both of the puzzles I posted are now valid.
@theweaponking: Wouldn't 2.Re7 win much faster? (First puzzle)
Anyway, one from one of my games:
Hey, Markus. 2. Re7?? seems like it wins faster, but it seems to run into a cute counterstrike.
Markus24, I'll be able to look at your puzzle properly in a few hours. What was white's move before the problem started ? New tactics trainer puzzles must start with the computer moving first.
nate23, perhaps you could test piphilologist's further idea for using your puzzle.
Hope this puzzle satisfies the requirements for this thread. My sincere apologies if it does not.
msjenned please ensure there are no alternative winning lines in your puzzles with an engine, such as 1...Rf2+ (+14) instead of 1...Qh3+ (mate in 7)
Looks like you need more puzzles!
Here's a brilliant mate in 9 from one of my Marshall Attack games (altered). I have also included variations I find worth adding.
shoopi that's a stunning problem. Thankyou so much for posting a perfect diagram that enabled me to effortlessly copy and paste the whole FEN into the analysis and source of
27th puzzle http://www.chess.com/tactics/server.html?id=412215
31st puzzle http://www.chess.com/tactics/server.html?id=272083
30th puzzle http://www.chess.com/tactics/server.html?id=202027
29th puzzle http://www.chess.com/tactics/server.html?id=241405
28th puzzle http://www.chess.com/tactics/server.html?id=464359
The potential repetition near the end doesn't make the problem ambiguous because the same mating sequence has to be used to win.
Nice variations there.
Indeed, this tactic has high emphasis on square weakness, especially when both sides have bishops of opposite color. It is a useful attacking theme.
Looking forward to submitting more puzzles.
between a Rf2 or a mating net w/ Qh3, which is required for a Tactic? Rf2?? You've many other Tactics that had another line but TT picks up best option.
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