Mate in 6

Actually, it's 2. Qg8 to prevent 2. ... Qg7

calvinhobbesliker wrote: this is how white wins

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What about 2...Qa4 ?

Maybe with this being the puzzle, the king hasn't moved and h8=R, so move 2. 0-0-0

Balto, moving the king is a blunder. After that King C7,B7,orD7 mates black. 1.h8Q forces black to play a8Q! in hopes to create a stalemate.

Ah, it's a real puzzle. 5. Qh8 will win. Thanks

 

benws wrote: here is the answer: 1. h8=Q, 2. Qg8, 3. Qe8, 4. Qe5+ 5. Qh8 6. Qa1+ 7. Qxa1+ 8. Qa7#. or something like that. this is a chess mentor course.

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Can you explain why 2.Qg8 is neccessary and why you can't simply do 2.Qe8 ?

if Qh8 x Qa1 Draw

kortam25 wrote: if Qh8 x Qa1 Draw

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Congratulations for telling us things we already know, while showing us that you haven't read the other comments or are intentionally wasting space in your topic.

THANK YOU itaibn FOR YOUR COMMENT, HAVE A NICE Congratulations !!!

I told that comment to  BaltoWolf87 because he move the King to A8

easy boys

Sunshiny wrote: Maybe with this being the puzzle, the king hasn't moved and h8=R, so move 2. 0-0-0

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 Okay, ignoring that Kortam placed coordinates on his diagram, if the King hadn't moved, wouldn't the white pawns be moving downward?

itaibn wrote: benws wrote: here is the answer: 1. h8=Q, 2. Qg8, 3. Qe8, 4. Qe5+ 5. Qh8 6. Qa1+ 7. Qxa1+ 8. Qa7#. or something like that. this is a chess mentor course.

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Can you explain why 2.Qg8 is neccessary and why you can't simply do 2.Qe8 ?

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 Sunshiny did so in post #6. If 2.Qe8, 2...Qg7 draws. 2.Qg8 is the only move that wins for white.

This is what Benws was trying for:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Move 4 and onward seem pretty straightforward to me. The first three moves are pretty interesting, though. First, you need to catch that ...Qg7 draws, so you need to deny this square. Then, you need to realize that Qf8 fails, as ...Qd6+ will also draw. Therefore, you have to step, first to g8, and then to e8. Allowing ...Qd7+ is obviously safe because of Kxd7#, and allowing ...Qd5+ is also safe, as white has Ke7+.

TonightOnly wrote: Sunshiny wrote: Maybe with this being the puzzle, the king hasn't moved and h8=R, so move 2. 0-0-0

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 Okay, ignoring that Kortam placed coordinates on his diagram, if the King hadn't moved, wouldn't the white pawns be moving downward?

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 Being a puzzle, it takes a few liberties. The king, having been placed on the board, hasn't moved. The pawn becomes a rook and castling can take place because neither king nor rook moved. I don't believe the rules say that the king must be on their respective starting squares in order to castle. It is taken as a given, but again, being a puzzle,...

Actually the rules says that you can't castle with a pawn that you promoted to a rook. I'm not sure of the exact wordings but I know this was added quite recently.

Fastest mate I can find is  7 moves. Note that the second move for white must prevent black to play 2..Qg7 without getting the queen taken.

Well, the new rule fixed it. This puzzle was probably created before the new rule.

Fastest in 7? That obviously doesn't include black blunders.

Fastest with black playing its best is 7. 

Oh wait. I'm doing it in 8. Let's see if i can find 7...

Nope, fastest is 8 for me. 

Yeah fastest I find is in 8 too. I realised black had one better move in my line.