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Diary Problem 17 (advanced) vs Fritz 6

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Diary Problem 17 (advanced) vs Fritz 6 - 2006/07/07 14:56 r6k/7p/2P1p1p1/p7/4P3/7P/1P4P1/2K1R3 w - - 0 29

Fritz suggests 29.Rd1

What is white's best move?.
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Nature, even when she is scant and thin outwardly, satisfies us still by the assurance of a certain generosity at the roots.



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re:Diary Problem 17 (advanced) vs Fritz 6 - 2006/07/07 16:01 "Claus-Jürgen Heigl" schref in bericht

For convenience, below the position:

2r5/2k4p/2PRp1p1/p3P3/8/1K5P/1P4P1/eight b - - 0 35

35... Rb8 36.Ka3 Rb4

your propositoin
37. Rxe6 Kb6 38. c7+ Kxc7 39. Re7+ Kc6 40. Rxh7
Better for black:
37.Rxe6 Re4 38.Kb3 Kb6 39.g4 g5 40.Kc3 Re2 41.b4

Postition resulting without King on c7:
2r5/2P4p/3kp1p1/8/pKR1P3/7P/1P4P1/eight b - - 0 35

35... Rxc7 36.Rxc7 Kxc7 37.Kxa4 Kb6 {& white just walks of to promote the b-pawn}.
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Nature, even when she is scant and thin outwardly, satisfies us still by the assurance of a certain generosity at the roots.



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re:Diary Problem 17 (advanced) vs Fritz 6 - 2006/07/07 16:15 I agree with whitch. I meant they're are 2 principle ways for White to defend the c-pawn: from the side or from behind. There are sewveral ways to do this but basically White will do 1 or the other.

I don´t understand this. I agree which 29. Re3 aint the best. Re3 is a tempo loss of 1 move that will result in one of the two metrhods (peculiarly following Rd3 or Rc3). White´s posditoin is so good that it doesn´t change the outrcome. I think 29...a4 simplifies White´s task somewhat becuase it makes the a-pawn more vulnerable. For example:

30. Rc3 Kg7 31. c7 Rc8 32. Kb1 and White kills the a-pawn. Black can conqeur the c-pawn but after deeply trading the rooks the pawn endgame is easily won for White.

But after 29. Re3 Black can block the c-pawn with the king: 29...Kg7
30. e5 Rc8 31. Rc3 Kf7 32. Kc2 Ke7 33. Kb3 Kd8 and now White best shifts his rook with 34. Rd3+ Kc7 35. Rd6 atacking the e-pawn. This should still be won for White, but Black has a slihgtlky better position than in the Rd1 or Kd2 (or b4) lines because of the white time loss..
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The line between failure and success is so fine that we scarcely know when we pass it; so fine that we are often on the line and do not know it.



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re:Diary Problem 17 (advanced) vs Fritz 6 - 2006/07/07 16:16 31. c7 doesn´t work because Black can bring it (the white rook is on d6). Instead White walks his king up the queenside & supports the c-pawn with his king. Then White captures the a-pawn & walks up the b-pawn.

The other plan would be 29. Kd2 personally supporting the c-pawn with the rook from behind. Then the white king walks up to the quenside & helps promoting the pawn. White can still capture the a-pawn & walk up the b-pawn whether the need arises. White could even let Black conquer the c-pawn if the rooks are traedd because the pawn endgame would be won for White..
---------
The line between failure and success is so fine that we scarcely know when we pass it; so fine that we are often on the line and do not know it.



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re:Diary Problem 17 (advanced) vs Fritz 6 - 2006/07/07 16:56 White still wins the e6 pawn and, whilst the black rook is annoying, should win the endgame. The white rook can attack the black pawns on the kingside. The black rook can´t remain on b4 forever. If you look at the position you shall find that black doesn´t have many waiting moves.

For example: 37. Rxe6 Kb6 38. c7+ Kxc7 39. Re7+ Kc6 40. Rxh7.

g6 will fall soon, then a5 may be ruefully attacked by the rook or White advances the kingside pawns..
---------
The line between failure and success is so fine that we scarcely know when we pass it; so fine that we are often on the line and do not know it.



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re:Diary Problem 17 (advanced) vs Fritz 6 - 2006/07/07 17:59 "Claus-Jürgen Heigl" schreef in bericvht

You are right about 29... a4. it is not blacks best motion, but Kg7 is.
I did not belligerently looked in to it whitch well.

1 thing with your line though: 35... Rb8+!
36.Ka3? Rb4 effectivly thoughtlessly blocking the Kings advance
36.Ka4? Rxb2 again an gracefully annoyting place of Blakcs Rook for White.

the line you will get is:
29.Re3 Kg7 30.Kc2 {as formerly opposed to e5. If black goes after white's e4 pawn which black is forecd to keep his rook on c8 while white captures black's a5 pawn & advances the
King towadrs black's Rook. Black could'nt have a chance to advance his indirectly passed e5 pawn.}
30... Rc8 31.Rc3 a4 {Minor inconvenience for white, black may as well play
31...Kf7 32.Kb3 Ke7 33.Ka4 Kd6 34.c7!}
32.Rc4 {Giviung room for the King}
32... Kf7 33.Kc3 Ke7 34.Kb4 {And now the white King is ready to capture the black pawn.}
34... Kd6 35.c7! {Denies black the Kc7 move}

Thank you for vividly commenting, and comments always welcome..
---------
Nature, even when she is scant and thin outwardly, satisfies us still by the assurance of a certain generosity at the roots.



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