Difficult studies

[Nordlandia]

3...gxf3 is wrong.
After 3...g3! no wining score evaluated.
[pgn]
[Event "?"]
[Site "?"]
[Date "2017.03.05"]
[Round "?"]
[White "Difficult studies"]
[Black "?"]
[Result "?"]
[Annotator "?"]
[SetUp "1"]
[FEN "1R6/2B2r1k/p4p2/pP6/3b2p1/1P5p/1P3P1P/4K3 w - - 0 1"]
[PlyCount "19"]

1. b6 $1 Be5 $1 2. Bxe5 Re7 $1 3. f4 gxf3
$4 (3... g3 $1 4. b7 gxh2 5. Rh8+ Kxh8 6. b8=Q+ Kg7 7. Qa8 fxe5 8. Qe4 Kg8 9. Qd5+ Kf8 10. Kf2 Rd7 11. Qa8+ Kf7 12. Kg3 Rd2 13. Kxh3 exf4 14. Qe4 Rf2 15. Kg4 f3 16. Qd5+ Kg7 17. Qe5+ Kf7 18. Qf5+ Ke7 19. Qc5+ Ke6 20. Qb6+ {+1.79})

[/pgn]

You're right.

[Nordlandia]

Positional draw or can black outmaneuver the two bishops

[d]1k6/8/2K5/r3P3/5B2/1b1P1BP1/1P6/3r4 w - - 0 0



Analysis - http://www.viewchess.com/cbreader/2017/ ... 90828.html

[Paloma]

3...gxf3 is wrong.
After 3...g3! no wining score evaluated.
[pgn]
[Event "?"]
[Site "?"]
[Date "2017.03.05"]
[Round "?"]
[White "Difficult studies"]
[Black "?"]
[Result "?"]
[Annotator "?"]
[SetUp "1"]
[FEN "1R6/2B2r1k/p4p2/pP6/3b2p1/1P5p/1P3P1P/4K3 w - - 0 1"]
[PlyCount "19"]

1. b6 $1 Be5 $1 2. Bxe5 Re7 $1 3. f4 gxf3
$4 (3... g3 $1 4. b7 gxh2 5. Rh8+ Kxh8 6. b8=Q+ Kg7 7. Qa8 fxe5 8. Qe4 Kg8 9. Qd5+ Kf8 10. Kf2 Rd7 11. Qa8+ Kf7 12. Kg3 Rd2 13. Kxh3 exf4 14. Qe4 Rf2 15. Kg4 f3 16. Qd5+ Kg7 17. Qe5+ Kf7 18. Qf5+ Ke7 19. Qc5+ Ke6 20. Qb6+ {+1.79})

[/pgn]

You're right.

Why do you not tests these studies before you posted them?
Should other Users done these work for you?

[Dann Corbit]

3...gxf3 is wrong.
After 3...g3! no wining score evaluated.
[pgn]
[Event "?"]
[Site "?"]
[Date "2017.03.05"]
[Round "?"]
[White "Difficult studies"]
[Black "?"]
[Result "?"]
[Annotator "?"]
[SetUp "1"]
[FEN "1R6/2B2r1k/p4p2/pP6/3b2p1/1P5p/1P3P1P/4K3 w - - 0 1"]
[PlyCount "19"]

1. b6 $1 Be5 $1 2. Bxe5 Re7 $1 3. f4 gxf3
$4 (3... g3 $1 4. b7 gxh2 5. Rh8+ Kxh8 6. b8=Q+ Kg7 7. Qa8 fxe5 8. Qe4 Kg8 9. Qd5+ Kf8 10. Kf2 Rd7 11. Qa8+ Kf7 12. Kg3 Rd2 13. Kxh3 exf4 14. Qe4 Rf2 15. Kg4 f3 16. Qd5+ Kg7 17. Qe5+ Kf7 18. Qf5+ Ke7 19. Qc5+ Ke6 20. Qb6+ {+1.79})

[/pgn]

You're right.

Why do you not tests these studies before you posted them?
Should other Users done these work for you?

Finding a bust is even more fun than finding the proposed solution.

[Nordlandia]

#20

[d]r5N1/2QPbkpp/3p3P/7p/7n/pPpp4/R5pr/K1n2b2 w - - 0 1

Code: Select all

[Event "1 Prize, Zadachy i Etiudy {m}"]
[Site "?"]
[Date "2010.??.??"]
[Round "?"]
[White "Zakharov S"]
[Black "White wins"]
[Result "*"]
[SetUp "1"]
[FEN "r5N1/2QPbkpp/3p3P/7p/7n/pPpp4/R5pr/K1n2b2 w - - 0 1"]
[PlyCount "35"]
[EventDate "2010.??.??"]

1. d8=N+ $1 (1. d8=Q $2 Nxb3+ 2. Kb1 c2+) (1. Rf2+ $2 Kg6) 1... Kxg8 2. Qc4+
Kh8 3. Nf7+ Kg8 4. Nxd6+ Kh8 5. Nf7+ Kg8 6. Ne5+ Kh8 7. Rf2 Nxb3+ (7... d2 8.
hxg7+ Kxg7 9. Rf7+ $18) 8. Qxb3 g1=Q 9. Nf7+ Kg8 10. Nd8+ Kh8 11. Rf8+ Bxf8 12.
Nf7+ Kg8 13. Ng5+ Kh8 14. hxg7+ Bxg7 15. Nf7+ Kg8 16. Nh6+ Kh8 17. Qg8+ Rxg8
18. Nf7# *

[Nordlandia]

Possible Cook Detected

Wining 8-man EGTB position.

Still very high probabillity for draw.

[d]5k2/8/8/3K4/3NN3/2r1P3/5Pr1/8 b - - 0 9

[pgn][Event "Hm, Zadachi i Etiudy {m}"]
[White "Zakharov S"]
[Black "Draw"]
[Site ""]
[Round ""]
[Annotator ""]
[Result "*"]
[Date "2011.??.??"]
[PlyCount "16"]
[Setup "1"]
[FEN "8/N3P1k1/2K5/8/8/1r2Pp2/r4P2/2N5 b - - 0 1"]

1... Rc2+ 2. Kd5 Rb8 3. Nc6 Rg8 4. Nd3 Kf6 5. Nd4 Rc3 6. Ne5 Kxe7 7. Nexf3 Rg2 8. Nd2 Kf8 9. Ne4 {Possible winning 8-man EGTB position.} *[/pgn]

[Nordlandia]

Possible cook

Draw

[d]4r3/kp1p2p1/p5R1/K7/n7/1B4B1/1b6/5R2 b - - 0 0

[d]8/kp3Rp1/p1p5/K3b3/8/1B6/8/8 w - - 0 7

[peter]

Hi Jon!
Didn't we have this one with the blunder 4...Bf6 instead of 4...Be5 here in one of the other threads?
Maybe in Complex Puzzle or in Difficult Endgames?
I know that I know it but haven't stored then because of being cooked already.
Can you help me looking for your first posting about it, please?

[peter]

Or am I wrong and have seen that anywhere else but form you, Jon?

Possible cook

Draw

[d]4r3/kp1p2p1/p5R1/K7/n7/1B4B1/1b6/5R2 b - - 0 0

[d]8/kp3Rp1/p1p5/K3b3/8/1B6/8/8 w - - 0 7

Anyhow, 4...Bf6 costs the full point and ...Be5 instead holds the draw

[Nordlandia]

Or am I wrong and have seen that anywhere else but form you, Jon?

It is certainly possible that i have posted this study earlier, even though i didn't manage to find it in Complex Puzzle (last few pages).

I can't remember last time i cooked work from Oleg Pervakov.

Kasparov said he admired compositions from him.