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Blackadder
fluffy bunny
Joined: Sat Sep 08, 2007 2:22 am Posts: 546
Rating Class: Class A (1800-2000)
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 positional puzzle
This forum has very few positional puzzles, so I've decided to post one; the position is taken from a corr. game of mine.
white to move, how does white improve the position?
If your a bit stuck, heres a Hint: Hidden Text Below - [Show it] - [Hide it Again] White has lots of badly placed peices, A knight on the rim, a blocked in "Pawn-bishop" (a "pawn-bishop" is a name I have just invented for a bishop that is blocked in such a way it might as well be a pawn), and the other D2-knight isn't doing much either.
on the plus side, the king is safe, and white has control of the open B+E files...
BIGGER HINT (its a hard puzzle afterall):
Hidden Text Below - [Show it] - [Hide it Again]
here's some ideas for you to consider:
Is Bf1 (intending Re2 and then Rbe1) a good idea? ...it opens the up the file for the rook and indirectly threats the f5 pawn
or should white double Rooks on the b-file?
can we improve the placement of our peices? what about Nf1?
Qb2? ...adding pressure down the B-file
f3? ..if fxg3, Bxf3 (or even Nxf3) improve the placement of our pieces
Nhf3!? .. after Bxf3 can white obtain 3 protected passed pawns for the knight?
Okay, so if you have read the hints you should have lots of positional ideas by now...(if you didn't read the hints you should have some positional ideas anyway)
so comeon guys whats the first move? ...then whats the 2nd, 3rd, 4th, and 5th?
I haven't posted the awnser (yet) because I wanted to see other peoples opinions
on the position....I also want to see if any players fall into the trap thats lurking in the darkness (if I say anymore, I'll give it away)
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| Sat Dec 08, 2007 9:34 pm |
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Wildman
Premium Member
Joined: Fri Jul 27, 2007 3:24 pm Posts: 2001 Location: Silicon Valley, California, USA
Rating: 1702 USCF
Rating Class: Class B (1600-1800)
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Hidden Text Below - [Show it] - [Hide it Again]
I like 1. Nxf5:
If 1... Nxf5 2. Bxg4+ Ne7 3. Bxh5+ and now White has three passed pawns for his knight and a lot of useful squares for his two remaining minor pieces while the Black king is very exposed in the center and his queenside pieces aren't really doing much at all.
If 1... Rxf5 2. Bxg4 Rg4 (if 2... Rf8 3. Bxh5+ transposes to the other line, while 2... hxg4 3. Qxf5 gives White R+2P for B+N, a weak Black pawn on g4 and attacking chances against Black's king) 3. Bxh5+ Kd7 (if 3... Rxh5 4. Qg6+ Kd7 5. Qxh5 and White has won R+3P and lost B+N and gained a bunch of freedom and still has chances to attack Black's king) 4. Qh7 Nbc6 5. Nf3 Rg8 6. Ne5+ and things are about to get very ugly for Black's king.
_________________ I know you believe you understand what you think I just said, but you may not realize what I implied is not what you inferred.
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| Sat Dec 08, 2007 11:16 pm |
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Blackadder
fluffy bunny
Joined: Sat Sep 08, 2007 2:22 am Posts: 546
Rating Class: Class A (1800-2000)
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thats not the solution I have....
But I urge you to check your line with a computer... it may also work.
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| Sun Dec 09, 2007 11:03 am |
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JoshSpecht
Founder
Joined: Wed Feb 14, 2007 9:17 pm Posts: 4712
Rating: 2073 USCF
Rating Class: Expert (2000-2200)
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Initially, I was thinking about Wildman's solution, but now I'm looking for something else....
Actually, I can't come up with anything too strong other than the idea Wildman proposed. Maybe white could try:
Hidden Text Below - [Show it] - [Hide it Again] 1.Bxg4. The whole point of this idea, and the Nxf5 idea is to break down black's kingside bind in order to activate the white pieces. I feel like other options are too slow, as black can coordinate and defend will with a move like Nbc6.
_________________ FIDE 2118, USCF 2073.
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| Sun Dec 09, 2007 1:38 pm |
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Blackadder
fluffy bunny
Joined: Sat Sep 08, 2007 2:22 am Posts: 546
Rating Class: Class A (1800-2000)
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In the game I played ********, when I checked with the computer it turned out to be best so I didn't bother to look at what else I could have played.
so what i am trying to say is, both of your suggestions might work, but they (imo, and the opinion of crafty) not the strongest.
prepare to kick yourself.
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| Sun Dec 09, 2007 5:25 pm |
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JoshSpecht
Founder
Joined: Wed Feb 14, 2007 9:17 pm Posts: 4712
Rating: 2073 USCF
Rating Class: Expert (2000-2200)
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Positional puzzles = good. That being said, I'm still not sure what white's best plan is here.
But...
Hidden Text Below - [Show it] - [Hide it Again] 1.Bf1 looks like a move that has a lot of advantages. Beyond preparing a potential doubling along the e-file, it allows white to play 2.Ng6 and then reposition the knight to either f4 or e5 (I think I might like f4 more).
_________________ FIDE 2118, USCF 2073.
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| Sun Dec 09, 2007 8:37 pm |
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Blackadder
fluffy bunny
Joined: Sat Sep 08, 2007 2:22 am Posts: 546
Rating Class: Class A (1800-2000)
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another "wrong" guess.
remember I wrote "I haven't posted the awnser (yet) because I wanted to see other peoples opinions
on the position....I also want to see if any players fall into the trap thats lurking in the darkness (if I say anymore, I'll give it away)"
well, allow me to anounce the trap that snared you.
this isn't a positional puzzle, I only told you that to see how you would respond.
the solution is completly 100% tactical, not only that it is completly crushing (+4 according to crafty)
It would seem that people act in the way that is expected of them, and not according to their own judgement.
If I now tell you the first move is Hidden Text Below - [Show it] - [Hide it Again] Bxc4
isn't the solution completly obvoius?
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| Sun Dec 09, 2007 10:13 pm |
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JoshSpecht
Founder
Joined: Wed Feb 14, 2007 9:17 pm Posts: 4712
Rating: 2073 USCF
Rating Class: Expert (2000-2200)
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Wow, I actually considered that but rejected it. Not sure if it was due to bad calculation or thinking I was looking for something "positional."
Actually, I think my mistake was looking for something here:
Hidden Text Below - [Show it] - [Hide it Again] 1...dxc4 2.Nxc4 with threats (similar to the solution) of Rxb7 and Nd6+, but I decided it was too slow, which it is.
Of course I missed the line below, which became much more obvious after you posted the first move
Hidden Text Below - [Show it] - [Hide it Again] 1...dxc4 2.Nxf5! with the dual threat of Rxe7+ and Rxb7, so 2...Rxf5 is forced and then 3.Qxf5 gives white a crushing position.
_________________ FIDE 2118, USCF 2073.
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| Sun Dec 09, 2007 10:30 pm |
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Blackadder
fluffy bunny
Joined: Sat Sep 08, 2007 2:22 am Posts: 546
Rating Class: Class A (1800-2000)
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 |  |  |  | JoshSpecht wrote: Wow, I actually considered that but rejected it. Not sure if it was due to bad calculation or thinking I was looking for something "positional." Actually, I think my mistake was looking for something here: Hidden Text Below - [Show it] - [Hide it Again] 1...dxc4 2.Nxc4 with threats (similar to the solution) of Rxb7 and Nd6+, but I decided it was too slow, which it is.
Of course I missed the line below, which became much more obvious after you posted the first move  Hidden Text Below - [Show it] - [Hide it Again] 1...dxc4 2.Nxf5! with the dual threat of Rxe7+ and Rxb7, so 2...Rxf5 is forced and then 3.Qxf5 gives white a crushing position.
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correct! white creates threats all over the place which are simply unstoppable...
out of interest is turns out that White really didn't have a "bad move" in the position
Hidden Text Below - [Show it] - [Hide it Again]
according to crafty (5-10 sec)
Bf1 scores + 3.0
Nf1 + 1.6
f3 +0.12
Nhf3 +0.8
Rxb7 +2.0
Nxf5 +2.0
Qb2 +2.0
Rb2 +2.5
Bxg4 +2.8
Nxc4 +2.0
Kh2 +2.2
and of course, Bxc4 +4.0
...it looks like you would have to be a total idiot to ruin whites position.
funny this is, it doesn't "look" that strong.
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| Sun Dec 09, 2007 10:42 pm |
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Wildman
Premium Member
Joined: Fri Jul 27, 2007 3:24 pm Posts: 2001 Location: Silicon Valley, California, USA
Rating: 1702 USCF
Rating Class: Class B (1600-1800)
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FWIW, I launched Fritz 8 last night at 300 seconds -- it may still be running, I forgot to check this morning before going to work. Its first choice when I went to bed (after it ran for a couple of hours) was 1. Bxg4 with 1. Bxc4 as it's second choice. It's nice that Crafty thinks my 1. Nxf5 wasn't too bad and that aparently I'm not a total idiot...
L8erz...
=wild=
_________________ I know you believe you understand what you think I just said, but you may not realize what I implied is not what you inferred.
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| Mon Dec 10, 2007 1:30 pm |
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Blackadder
fluffy bunny
Joined: Sat Sep 08, 2007 2:22 am Posts: 546
Rating Class: Class A (1800-2000)
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Interesting... what was eval for both?
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| Mon Dec 10, 2007 1:50 pm |
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Wildman
Premium Member
Joined: Fri Jul 27, 2007 3:24 pm Posts: 2001 Location: Silicon Valley, California, USA
Rating: 1702 USCF
Rating Class: Class B (1600-1800)
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Like I said, it was still running when I last looked. I'll try and remember to post it when I get home tonight if I have time. I do rememeber them being fairly close: something like 2.96 for one and 2.83 for the other -- take the numbers with a grain of salt since my memory has more holes than a block of Swiss cheese.
L8erz...
=wild=
_________________ I know you believe you understand what you think I just said, but you may not realize what I implied is not what you inferred.
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| Mon Dec 10, 2007 1:54 pm |
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Wildman
Premium Member
Joined: Fri Jul 27, 2007 3:24 pm Posts: 2001 Location: Silicon Valley, California, USA
Rating: 1702 USCF
Rating Class: Class B (1600-1800)
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Unfortunately, my wife had to reboot the computer today so I no longer have the data. I reran Fritz 8 with 20 seconds per move (instead of 300) and it came back with:
1. Bxc4 +5.25
2. Bxg4 +4.68
Looks like the order got flipped and the magnitudes are very different from what I remember.
L8erz...
=wild=
_________________ I know you believe you understand what you think I just said, but you may not realize what I implied is not what you inferred.
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| Tue Dec 11, 2007 2:53 am |
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