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Do you analyze lines on a board or in your head...

Do you analyze lines on a board or in your head...

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Originally posted by MCA
Is it just me being stupid and missing something or is that not really easy??😕

Nxf6# leading to Qh7##??
Actually Its + (# is mate)

Variation 1
Nxf6 + , Qxf6
Bxh7+ , Kh8
Bg6#

Im not sure what to do when gxf6 as I don't have the image here... I'll edit in a second.


Edit.. forgot about our other night so variation 1 is inneficient and it looks like there is no forced mate after gxf6. Rxf6 is the same as Qxf6, just follow up with Qxh7+ and Qh8#..

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Originally posted by Wulebgr
Yes. You are missing something. 1.Nxf6+ is met by gxf6. White may still have a slight edge, but mate certainly is not imminent.
I believe I had found the mate. Look at my earlier post. Qxh7 leads to mate.

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Originally posted by zebano
Actually Its + (# is mate)

Variation 1
Nxf6 + , Qxf6
Bxh7+ , Kh8
Bg6#

Im not sure what to do when gxf6 as I don't have the image here... I'll edit in a second.


Edit.. forgot about our other night so variation 1 is inneficient and it looks like there is no forced mate after gxf6. Rxf6 is the same as Qxf6, just follow up with Qxh7+ and Qh8#..
God, pay attention people. Look at the queen sacrifice on h7. The black king gets drawn out into the board and get's mated easily.

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Originally posted by GalaxyShield
God, pay attention people. Look at the queen sacrifice on h7. The black king gets drawn out into the board and get's mated easily.
GS, no one is listening to you.

The solution given in the book lists a mate in eight beginning with Qxh7+, and ending with O-O-O#, but there are several closely related variations. A few minutes ago Crafty 19.19 informed me of a mate in seven.

Keeping all these variations in my head took some effort as bedtime reading, but six months ago I got there. Now, however, the memory gets fuzzy again.

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Originally posted by Wulebgr
GS, no one is listening to you.

The solution given in the book lists a mate in eight beginning with Qxh7+, and ending with O-O-O#, but there are several closely related variations. A few minutes ago Crafty 19.19 informed me of a mate in seven.

Keeping all these variations in my head took some effort as bedtime reading, but six months ago I got there. Now, however, the memory gets fuzzy again.
Lol. Glad I was right. It's a very cool puzzle, with a great queen sac. The O-O-O makes sense, I didn't see that cause I though I spotted mate before that but I saw that the king gets drawn out into the middle of the board with a lot of pieces on it so mate would be close no matter what I would think. I saw mate on g3 I think.

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Qxh7+ Kxh7 Nxf6+ (along with the bishop) Kh6 Ng4+ Kg5 h4+ Kc4 g3++. That's mate in 5 I think.

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Originally posted by GalaxyShield
Lol. Glad I was right. It's a very cool puzzle, with a great queen sac. The O-O-O makes sense, I didn't see that cause I though I spotted mate before that but I saw that the king gets drawn out into the middle of the board with a lot of pieces on it so mate would be close no matter what I would think. I saw mate on g3 I think.
If I recall accurately, the line ending in O-O-O# is elegant, but not the most efficient mate.

I found the puzzle in Chess Traveller's Quiz Book by Julian Hodgson. He gives the game as Edward Lasker - Thomas 1912, but my database from ChessBase has the date as 1921. The game also appears in the Lasker chess training CD from ChessBase, where it is presented as an example of something often incorrectly attributed to Emanuel Lasker.

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Originally posted by GalaxyShield
Qxh7+ Kxh7 Nxf6+ (along with the bishop) Kh6 Ng4+

Which knight? If Neg4+, then g3+ is not mate. If Nfg4+, then Kh5 holds off a while longer.


Kg5 h4+ Kc4 g3++. That's mate in 5 I think.

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Originally posted by Wulebgr
If I recall accurately, the line ending in O-O-O# is elegant, but not the most efficient mate.

I found the puzzle in Chess Traveller's Quiz Book by Julian Hodgson. He gives the game as Edward Lasker - Thomas 1912, but my database from ChessBase has the date as 1921. The game also appears in the Lasker chess training CD from ChessBase, where it is presented as an example of something often incorrectly attributed to Emanuel Lasker.
My sources for this game give the year 1912. Looks like the chessbase guys made a typo. (switched the "2" and "1" around in the year)

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Originally posted by GalaxyShield
God, pay attention people. Look at the queen sacrifice on h7. The black king gets drawn out into the board and get's mated easily.
Sorry about that. I'll make sure to take more time out of work to analyze chess puzzles. =)

I'm giving myself partial credit for realizing that my method didn't work.

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Originally posted by Wulebgr
Originally posted by GalaxyShield
[b]Qxh7+ Kxh7 Nxf6+ (along with the bishop) Kh6 Ng4+


Which knight? If Neg4+, then g3+ is not mate. If Nfg4+, then Kh5 holds off a while longer.


Kg5 h4+ Kc4 g3++. That's mate in 5 I think.[/b]
Nfg4+ Kh5 Bg6+ Kg5 h5+ Kc5 g3+ Be4++ I believe.

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Originally posted by zebano
Sorry about that. I'll make sure to take more time out of work to analyze chess puzzles. =)

I'm giving myself partial credit for realizing that my method didn't work.
No worries, it's a tricky puzzle.

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Originally posted by GalaxyShield
Nfg4+ Kh5 Bg6+

Kh4!

Kg5 h5+ Kc5 g3+ Be4++ I believe.

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Originally posted by Wulebgr
Originally posted by GalaxyShield
[b]Nfg4+ Kh5 Bg6+


Kh4!

Kg5 h5+ Kc5 g3+ Be4++ I believe.[/b]
Ooo, ouch. Hmm. Well, it's there somewhere, just have a few road blocks obviously 😛.

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Originally posted by GalaxyShield
No worries, it's a tricky puzzle.
Yes. I saw part of the solution the first time I saw the puzzle, but missed some of black's possible defenses. My instict told me that black's king could probably become trapped afther the queen sacrifice. Working out all the key variations after looking at the solution, and even keeping all of the main line in my memory took many nights of concentration.

That's why I threw this problem into this thread. It is a good one for practicing such analysis. It makes a tremendous differnce which knight moves to g4, but it took me a long time to keep it straight even after I knew the answer.