8-12 move sequence puzzles (Expert)

Your goal is to find the BEST MOVE; Even if your move blunders a "tempo" or "waste time". The move sequence "usually" applies to what "depth" or "ply" would be needed from the potential puzzle solver to solve these puzzles. There are checkmate puzzles and advantage puzzles involved. These Puzzles REALLY NEED a sharp depth search (mentioned above); you will run into very sharp and critical endgames that need that. Notice to all puzzle solvers, these puzzles ONLY HAVE 1 SOLUTION. If you don't believe the move provided is the only solution then analyse the position using a chess engine before complaining or suggesting in the comments. These puzzles are ALL ANALYSED by Stockfish 7 and are regularly updated (Last updated October 10th 2016): 

It's a good problem but you have chosen the wrong defense. After 7. .. Kg8 white can mate with both 8. Qe6+ and 8. Qd5+ and they are equally quick. Even Stockfish will agree to that!

Better to chose the defense 7. .. Qf7+ which leaves only one mate in two.

The whole idea isn't to choose the "best defense" for the replier, it is to choose the "trickiest defense" so the potential puzzle solver can keep his tactical mind on. 

Of course, as long as it is a "correct" defense. A defense that leaves white two correct choices is not OK, since the puzzle interface will reject one of the correct white solution moves (in this case 8. Qd5+).

By the way, 7. .. Qf7+ certainly qualifies as a tricky defense since it gives white the opportunity to make a fatal error.

Sorry about that, I fixed the puzzle and it should have only one solution. Correct any puzzle that has more than one solution (applies to other viewers here too)

Good Puzzles

Have you got more?

Any defense is waste as long as it leads to checkmate.

Yes, but it is a great challenge for me to convert those harder puzzles into puzzles with ONE SOLUTION. I really wish chess.com can allow puzzle makers that allow multiple solutions and dynamic interactive puzzles. Lets say for example: A queen and king vs king tablebase "training". In a winning position, the distance to mate is no longer than mate in 8; BUT there are so many multiple solution variations that would need to be inserted for the potential puzzle trainer to solve the puzzle (perhaps chess.com should allow uploading the whole individual tablebase for that endgame that uploads all of the desired replies to optimal mate solving. As you can see, the Qf7+ problem Arisktotle pointed out was a multiple solution position that slipped my head which obliged me to redo the whole puzzle and force black to do moves that allow white to do ONE OPTIMAL move. 

It doesn't matter.You just give the fastest way to finish the game.

Well, the fastest way to finish the game in tablebases solutions usually have solutions that do EXACTLY the same distance to mate; for example: 

You don't need to post every puzzle till checkmate.

For Example

I know, but those puzzles may be easier. I love crucial mating puzzles, especially at higher levels. I know I can make you do some mating moves that don't finish the checkmate puzzle but that sounds inconvenient. I really think mating puzzles should be finished to the end. 

Adam there is a tournament tomorrow.visit live chess association for more information.

I read quite often that people are 'redoing' the whole puzzle when the solution needs to be changed. In my experience such is not necessary. After first clicking on the diagram in the post and then on the 'diagram icon' you get the opportunity to make changes to the puzzle solution. Making a change to the last few moves should only take a minute.

At least that is how things work from by browser interface.

i tried that and it didn't work, what browser and version of chess.com are you using? I use chrome and chess.com V3.

I use IE11 and the 'old' chess.com - don't know what version that is. If the source of the problem is in the technical area, may be somebody can tell us what is going on precisely ...