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  #51  
Old 03-26-2008, 11:46 PM
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Default Re: Chess Puzzles

This is an example of a knight and rook corridor mate. But first you have to get inside.

Meo vs. Guistolizzi, 1959. Black to move and mate in three.




The FEN for the puzzle is:
7r/pkq3pp/4p3/1P3p2/P2r1n2/B7/5PPP/R4RK1

If you copy and paste it at Chessup, you can work out the problem there.
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  #52  
Old 03-27-2008, 07:14 PM
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Default Re: Chess Puzzles

Here's a very beautiful mating attack from a 19th century game. One of the great things about chess notation is that it allows us to reconstruct games from centuries past, and experience them just as if they were happening today.

This one is from Steinkühler vs. Blackburne, Manchester, 1863.

Black to move and mate in four.




The FEN for the puzzle is:
r1b2r1k/pp4pp/3p1q2/3B4/8/1QN3Pn/PP3PKP/R3R3
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  #53  
Old 04-02-2008, 03:51 AM
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Default Re: Chess Puzzles

Carlsen vs. Tallaksen, Sandnes (Norway), 2005

The young grandmaster Magnus Carlsen brilliantly sacrificed a rook and a bishop to achieve this winning position.

From the position below, it's White to move and mate in four.




The FEN for this puzzle is:
5r2/p3bp1Q/4p3/8/3p2k1/1P2P1P1/P5KP/2r5
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  #54  
Old 04-05-2008, 05:31 AM
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Default Re: Chess Puzzles

Even in the age of punch cards and vacuum tubes, people were creating chess-playing computers. This endgame is from one such match, where the computer lost in twenty-three moves, the last ten of which were a forced mate.

David Bronstein vs. M20, Moscow Mathematics Institute, 1963.

White to move and mate in ten.




The FEN is:
rnbq1b1r/p1pp1p1p/4k3/1p1NP1p1/2QP1p2/5N2/PP1B1KPP/n4B1R

Last edited by Nullifidian; 04-06-2008 at 02:14 AM.
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  #55  
Old 04-09-2008, 08:35 PM
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Default Re: Chess Puzzles

There's an excess space in that FEN, before 'n4B'.
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  #56  
Old 04-09-2008, 11:25 PM
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Default Re: Chess Puzzles

Quote:
Originally Posted by seebs View Post
There's an excess space in that FEN, before 'n4B'.
I didn't put it there; it's a bug with the board. Apparently it randomly inserts spaces in long strings of characters, whether or not they're going to cause problems with the formatting. If you go to "Quote", you'll see it without the space.
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  #57  
Old 04-09-2008, 11:26 PM
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Default Re: Chess Puzzles

Oh, interesting. Whee, vB!
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  #58  
Old 04-10-2008, 01:06 AM
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Default Re: Chess Puzzles

Here's a mate in eight that I played in an over-the-board game recently. There's a lot of enjoyment to be had just in playing chess against another person, especially when that person is a good friend and as enthusiastic a chess player as oneself. :D

White to move and mate in eight.

Nullifidian vs. Null's Friend, a pub in San Diego, 2008 :cheers2:




The FEN for this puzzle is:
6k1/4p3/3pPbPp/8/8/2P1N3/PqB1K1Q1/8

Last edited by Nullifidian; 04-10-2008 at 01:27 AM.
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  #59  
Old 04-12-2008, 02:33 AM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Nullifidian View Post
Here's a mate in eight that I played in an over-the-board game recently. There's a lot of enjoyment to be had just in playing chess against another person, especially when that person is a good friend and as enthusiastic a chess player as oneself. :D

White to move and mate in eight.

Nullifidian vs. Null's Friend, a pub in San Diego, 2008 :cheers2:




The FEN for this puzzle is:
6k1/4p3/3pPbPp/8/8/2P1N3/PqB1K1Q1/8
I love the way you were able to put the diagram of the board in like that. Could you please private message me and tell me how I can do that? Also, did you see this checkmate over the board, or did you find it in the post game analysis.

Best

AO
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  #60  
Old 04-12-2008, 03:31 AM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Arrogant-One View Post
I love the way you were able to put the diagram of the board in like that. Could you please private message me and tell me how I can do that? Also, did you see this checkmate over the board, or did you find it in the post game analysis.

Best

AO
I sent the private message off. I saw the checkmate over the board. It was actually easier than it first appears, because the first step is easy, and the rest of it is figuring out if the attack can be sustained. I considered the possibilities and decided that it could.
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  #61  
Old 04-13-2008, 03:20 AM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Nullifidian View Post
Quote:
Originally Posted by Arrogant-One View Post
I love the way you were able to put the diagram of the board in like that. Could you please private message me and tell me how I can do that? Also, did you see this checkmate over the board, or did you find it in the post game analysis.

Best

AO
I sent the private message off. I saw the checkmate over the board. It was actually easier than it first appears, because the first step is easy, and the rest of it is figuring out if the attack can be sustained. I considered the possibilities and decided that it could.
Great! Got your PM, thanks. Have you any more chess puzzles?

ps- Post 52 above contains a brilliant puzzle, just amazing and imaginative!
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  #62  
Old 04-13-2008, 05:18 AM
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Default Re: Chess Puzzles

I have a nice matching pair of puzzles, both mates in four, which unfortunately have a lot of alternate solutions, but one only needs one example of each to get the thematic idea, so I might just leave it at that and let others work out all the alternative lines.
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  #63  
Old 04-13-2008, 05:36 AM
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Default Re: Chess Puzzles

Thanks to Arrogant One's enthusiasm, I'm posting this rather neat little matching pair of puzzles.

Both are White to move and mate in four.




The FEN for the puzzle is:
8/8/8/8/8/8/PPPPPPPP/kNBQKBNR




The FEN for the puzzle is:
8/8/8/8/8/8/PPPPPPPP/RNBQKBNk
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  #64  
Old 04-13-2008, 06:28 PM
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Default Re: Chess Puzzles

This chess puzzle involves several fairly common themes, most notably how to build an attack with fewer pieces. At this juncture, things look bad for Black. Black is down a rook, a knight, and a pawn, and Black's king is stranded in the center while White's sleeps snugly behind a wall of pawns and a rook. However, at the end of seven moves, Black is going to checkmate White. How?

Black to move and mate in seven.




The FEN is:
7Q/r2pkB1p/p3p2q/1pb1N3/4n3/8/PP3PPP/RN3RK1
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  #65  
Old 04-14-2008, 09:07 AM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Nullifidian View Post
Thanks to Arrogant One's enthusiasm, I'm posting this rather neat little matching pair of puzzles.

Both are White to move and mate in four.




The FEN for the puzzle is:
8/8/8/8/8/8/PPPPPPPP/kNBQKBNR



[SPOILER]Don't cheat! :nope:

[SPOILER]Solutions:
1. e4 Kxg1
2. g4 Kxh2
3. Qf3 Kg1
4. Qg2#

1. f4 Kxh2
2. Kf2 Kh1
3. e4 Kh2
4. Qh5#

1. g4 Kxh2
2. e4 Kxg1
3. Qf3 Kh2
4. Qg2#
Oooooh La la, I am going to enjoy this. These are exactly the type of unorthadox puzzles that I love. Can I have a couple days to consider these Nullifidian?

Best

AO

ps- Can you please delete the spoiler so I'm not tempted to cheat?
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  #66  
Old 04-18-2008, 08:51 PM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Arrogant-One View Post
Oooooh La la, I am going to enjoy this. These are exactly the type of unorthadox puzzles that I love. Can I have a couple days to consider these Nullifidian?

Best

AO

ps- Can you please delete the spoiler so I'm not tempted to cheat?
Unfortunately, after more than a day passes, I cannot go back and re-edit the puzzle. But since you ask, in future, I can post the answers later, with the next puzzle.

And just to be efficient, here's the next puzzle, and it's another original composition.

Black to move and mate in four.



The FEN is:
8/8/7p/8/1r6/8/K6P/3k4

Last edited by Nullifidian; 04-18-2008 at 09:13 PM.
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  #67  
Old 04-20-2008, 12:42 AM
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Default Re: Chess Puzzles

The solution to the previous puzzle is:


Palevic vs. Luzniak, correspondence, 1981

White to move and draw.



The FEN is:
8/8/3pkN1p/7P/1p6/1p6/1PP5/K7

Last edited by Nullifidian; 04-20-2008 at 01:48 AM.
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  #68  
Old 04-20-2008, 03:56 AM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Nullifidian View Post
Unfortunately, after more than a day passes, I cannot go back and re-edit the puzzle. But since you ask, in future, I can post the answers later, with the next puzzle.

And just to be efficient, here's the next puzzle, and it's another original composition.

Black to move and mate in four.


This one looks really good! I haven't given up on the others yet, but will give this one my full attention. You've got a talent for finding nice puzzles Nullifidian.

AO
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  #69  
Old 04-20-2008, 06:31 PM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Nullifidian View Post
Quote:
Originally Posted by Arrogant-One View Post
Oooooh La la, I am going to enjoy this. These are exactly the type of unorthadox puzzles that I love. Can I have a couple days to consider these Nullifidian?

Best

AO

ps- Can you please delete the spoiler so I'm not tempted to cheat?
Unfortunately, after more than a day passes, I cannot go back and re-edit the puzzle. But since you ask, in future, I can post the answers later, with the next puzzle.

And just to be efficient, here's the next puzzle, and it's another original composition.

Black to move and mate in four.



The FEN is:
8/8/7p/8/1r6/8/K6P/3k4
Fuck. 4 moves? I did it in 6, does that count? :P
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  #70  
Old 04-20-2008, 07:13 PM
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Default Re: Chess Puzzles

Also... regarding post 52...

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  #71  
Old 04-20-2008, 10:03 PM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Zero Angel View Post
Also... regarding post 52...

No, I'm afraid it doesn't count if you do it in six moves. :sadno:

And you're right about the first move.

My next hint to you would be:


If you still can't get it, the solution is included with the puzzle. All you have to do is click the spoiler buttons.
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  #72  
Old 04-21-2008, 10:45 AM
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Default Re: Chess Puzzles

Quote:
Originally Posted by Nullifidian View Post
Quote:
Originally Posted by Zero Angel View Post
Also... regarding post 52...

No, I'm afraid it doesn't count if you do it in six moves. :sadno:

And you're right about the first move.

My next hint to you would be:


If you still can't get it, the solution is included with the puzzle. All you have to do is click the spoiler buttons.
AHA! Got them both.

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  #73  
Old 04-21-2008, 08:19 PM
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Default Re: Chess Puzzles

Congrats, Zero Angel. :D I created another chess puzzle with a somewhat related idea here.

Now, the solution to the previous puzzle is:



This is a variant of Stamma's Mate. By themselves, two knights and a king (or one knight and a king) cannot force checkmate, but in the right position a knight and a king can force checkmate against a knight and a pawn on the same "edge" file, either a or h.

This original composition is two knights and a king against a king and a pawn, and the result looks a bit like a game of a leapfrog. :leapfrog:

From the position below, it's White to move and mate in five.



The FEN is:
8/8/5N2/8/4N2p/8/7k/4K3
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  #74  
Old 04-21-2008, 11:42 PM
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Default Re: Chess Puzzles

that one's really hard :/
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  #75  
Old 04-22-2008, 09:18 AM
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Default Re: Chess Puzzles

Well, my hint would be that you should remember Stamma's Mate only works if the enemy king is in one of those two particular files on the side of the board at all times.

The solution for the previous puzzle is:



Now for yet another original composition, this is a different form of mating pattern called an Epaulette Mate. As with many puzzles of this type, recognizing the type of mate is the biggest clue to solving the puzzle.

Black to move and mate in three.



The FEN is:
2r5/1k4PR/1p3R2/1K6/1P6/P7/1r6/8

Last edited by Nullifidian; 04-22-2008 at 09:47 AM.
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