< Earlier Kibitzing · PAGE 28 OF 28 ·
Later Kibitzing> 
Dec2513
  ajile: Reposted for reference. White trades bishops with 36.Bxd4. 25. c5 b4 26. Bb2 Na5 27. Ka2 Nb7 28. c6 Nd6 29. Nxd6+ Bxd6 30. e4 Bc5 31. R1g2 a5 32. R6g3 Rad8 33. h4 h5 34. Rg6 Rd6 35. Kb1 Bd4 If White tries 36.Bxd4 it's very bad since he is losing another pawn without compensation. After 36..Rxd4 the e4 pawn hangs and if 37.f3 then the c6 pawn will fall. 36.Bxd4?
click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. (2.00): 36...Rxd4 37.f3 Rd6 38.R6g3 Rxc6 39.Rg1 Rc2 40.f4 Rxd2 41.fxe5 fxe5 42.Rc1 Rc2 43.Rxd3 Rxc1+ 44.Kxc1 Kf6 45.Rd7 g5 46.fxg6 Rxg6 47.Rh7 Rg3 48.Kb2 Re3 49.Rxh5 Rxe4 50.Rh6+ 2. = (0.24): 36...exd4 37.R6g3 Rxc6 38.Rxd3 Rd6 39.Rdg3 d3 40.Rg1 c5 41.Rc1 Re8 42.f3 Rc6 43.Kb2 a4 44.bxa4 c4 45.Rcg1 c3+ 46.Kc1 

Dec2513
  ajile: Knight Tour Line with 33.Rc1.
26. Bb2 Na5 27. Ka2 Nb7 28. c6 Nd6 29. Nxd6+ Bxd6 30. e4 Bc5 31.R6g2 Rad8
32.h4 h5 33.Rc1 Bb6
click for larger viewAnalysis by Rybka 3 32bit : 20 ply
1. (1.72): 34.Rf1 Rd6 35.f4 exf4 36.Rxf4 Re8 37.Rg3 a5 38.Kb1 Re7 39.e5 fxe5 40.Rc4 Re8 41.Rg5 2. (1.90): 34.Rg6 Bxf2 35.Rh1 Rd6 36.Rh3 Rxc6 37.Rg2 Bc5 38.Rxd3 g5 39.fxg6+ Rxg6 40.Rd7+ Ke6 41.Rxg6 Kxd7 42.Kb1 Bf2 43.Rh6 Bxh4 44.Rxh5 Bf2 45.Rh8 Bb6 46.Ra8 Rd6 47.Kc2 a5 48.Rh8 Kc6 

Dec2513
  ajile: 26. Bb2 Na5 27. Ka2 Nb7 28. <Rc1> a5 29. <f3> a4 30. bxa4 Rxa4+ 31. Kb3 Raa8 32. Rcg1 Nxc5+ 33. Nxc5 Bxc5 34. Kc4 click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. (1.60): 34...Ra2 35.Kb3 Ra5 36.Kc4 Be7 37.Kxd3 Rd8+ click for larger viewAnalysis by Rybka 3 32bit : 20 ply
1. (1.67): 38.Ke2 Bf8 39.R6g4 Rc5 40.Rc1 Rxc1 41.Bxc1 h5 42.Rc4 Bd6 43.Kd3 Rg8 44.Rh4 g6 45.Bb2 gxf5 click for larger viewAnalysis by Rybka 3 32bit : 20 ply
1. (2.88): 46.Rxh5 Ke6 47.Rh6 c5 48.f4 Bf8 49.Rh7 Rg2 50.fxe5 fxe5 51.Bc1 Kd5 52.Kc2 click for larger view2. (3.54): 46.Kc2 Rg3 47.Rxh5 Rxf3 48.Kd1 Kg6 49.Rh8 Kg7 50.Rh5 b3 51.h4 e4 52.Rg5+ Kf7 53.Rg1 

Dec2713
  ajile: Reposted for reference.
26. Bb2 Na5 27. Ka2 Nb7 28.h4 Nxc5 29.Nxc5 Bxc5 30.h5 Well I looked at the 30.h5 line and it looks like White will probably still lose. Although it takes time to see it. click for larger viewAnalysis by Rybka 3 32bit : 25 ply
1. (1.72): 30...Be7 31.R6g4 a5 32.Rc1 c5 33.Ra1 Rgc8 34.Rc4
a4 35.Rac1 axb3+ 36.Kxb3
click for larger viewAnd now White hopes to stall the position by simply moving his rooks back and forth. But Black moves his king up to b5 and a rook to e8 to get this position: click for larger viewAnd now if White doesn't play e4 Black will and then the f5 pawn will fall (..Re5) and with it the game. But if White plays 43.e4 then we get this position:
click for larger view43..Ra7 44.Rb1 Rea8 45.Rbc1 Ra2 46.f3 Bd6 and we reach this amazing position where White is in virtual zugzwang. click for larger view01
Next will be checking to see if there is any way in this line for White to keep his rooks doubled forever on the g file. If White could do this then Black would have trouble getting the Rg8 out and playing ..Bf8. 

Dec2813
  ajile: Reposted for reference.
So far I can't find a way out for White if he tries to keep his rooks doubled on the g file. Black opens the a file with ..a5 and ..a4. Then if White does nothing Black moves his rook to c2 via a6 and c6. Here is an extreme example of White doing everything possible to maintain the doubled rooks. click for larger viewBlack has just played 39..Bc5 after playing 38..b3. Again this appears to be completely lost for White. Analysis by Rybka 3 32bit :
1. (4.83): 40.Bc3 Ba3 41.Rg1 b2 42.Ka2 Bc5 43.Rb1 Ra8+ 44.Kb3 Rb8+ 45.Ka2 Bxe3 46.dxe3 Rxc3 47.Rxb2 Rxb2+ 48.Kxb2 d2 49.Rg1 Rxe3 50.Rd1 Re2 51.Kc2 Ke7 52.Rg1 g5 53.Rg4 Re3 54.Kxd2 Rxf3 55.Ra4 2. (5.08): 40.Rg6 Bb4 41.Bc1 c5 42.R6g4 b2 43.Bxb2 Bxd2 44.Ka2 c4 45.Rxc4 Rxc4 46.Rxd2 Rd8 47.e4 Rc2 48.Rxc2 dxc2 49.Kb3 Rd3+ 50.Kxc2 Rxf3 51.Bc1 Rh3 52.Bd2 Rxh5 53.Kd3 Rh3+ 54.Ke2 h5 55.Be3 

Jan0214
  ajile: Reposted for reference.
<blue wave: Here is one of the draws from an engine match of 26 games. (24 black wins and 2 draws). 28.c6 Nd6 29.Nxd6 Bxd6 30.e4 a5 31.Kb1 Bc5 32.R1g2 h5 33.R6g3 Rad8
34.h4 Rd6 35.Rg6 Bb6 36.Ba1 Bd4 37.R6g3 Bxa1 38.Kxa1 Rd4 39.f3 Rd6
40.Kb1 Rxc6 41.Rg1 Rc2 42.R1g2 c5 43.f4 c4 44.bxc4 Rxc4 45.Rxd3 Rxe4
46.Rd7 Ke8 47.Ra7 exf4 48.Rf2 g5 49.fxg6 Rxg6 50.Rxa5 Re5 51.Ra4 Rg4
52.Rxb4 Rf5 53.Rb7 Rxh4>
Using a slightly more accurate move order we get to the same position minus ..h5. Note that ..h5 doesn't need to be played right away. 28.c6 Nd6 29.Nxd6 Bxd6 30.e4 Bc5 31.R1g2 a5 32.R6g3 Rad8 click for larger viewA critical position. White has maximized his position to: 1. Maintain pressure on g7 keeping Black's rook on g8. 2. Pressures Black's d3 pawn.
3. Protects the f2 pawn.
Continuing; White has a few moves left so let's proceed: 33.Kb1 h5 (covers the g4 square) 34.h4 Rd6
Another key point.
click for larger viewAny king move is instantly answered by 35..Rxc6 and Black ends up with a winning endgame. For example 35.Ka2 Rxc6 36.Rxd3 Rd6
So what else can White do? 35.Rg6
click for larger viewPoint being Black can't take the c6 pawn at the moment. 35..Rxc6? 36.Bxe5! and White is almost equalizing since the f6 pawn is pinned. click for larger viewSo Black simply plays 35..Bd4 and trades bishops.
36.R6g3 Bxb2 37.Kxb2
click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. µ (1.31): 37...Rd4 38.Rg1 Rxe4 39.Rxd3 Rd4 40.Rxd4 exd4 41.Ra1 Ke7 42.Rxa5 Kd6 43.Kc2 Re8 44.Ra4 Re4 45.Kd3 2. µ (1.05): 37...Rxc6 38.Rxd3 Rd6 39.Kc2 Rxd3 40.Kxd3 c6 41.Rg1 g6 42.fxg6+ Rxg6 43.Rh1 Ke6 44.f3 Kd6 45.Ra1 Rg3 46.Ke3 Rh3 47.Rxa5 Rxh4 48.Ra4 Kc5 49.Ra5+ Kb6 50.Ra4 c5 51.Ra8 Rh1 Have been continuing to search for alternate moves for White in the endgame but have found none that save him so far. 

Jan0314
  ajile: Reposted for reference.
29. Nxd6+ Bxd6
30. R1g3 <e4> 31. <R3g4> click for larger viewAnalysis by Rybka 3 32bit : 24 ply
1. µ (1.19): 31...Rab8 32.Rxe4 Rb5 33.Reg4 Rxf5 34.f4 click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. (1.44): 34...Rc5 35.Bxf6 Rxc6 36.Bb2 Rc2 37.Rg2 Rxd2 38.Rxd2 Kxg6 39.Rxd3 Kf5 click for larger viewAnalysis by Rybka 3 32bit : 23 ply
1. (1.53): 40.Rd4 g5 41.fxg5 Rxg5 42.h4 Rg4 43.Rd5+ Ke4 44.Rh5 Rg6 45.Bd4 c6 46.Kb2 click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. (2.64): 46...Bf4 47.Kc2 Bxe3 48.Bxe3 Kxe3
click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. (2.64): 49.Rf5 Rg2+ 50.Kc1 Rg4 51.h5 Rg1+ 52.Kc2 Rh1 53.Rc5 Rh2+ 54.Kc1 Kd3 click for larger viewAnalysis by Rybka 3 32bit : 22 ply
1. (4.19): 55.Rf5 a5 56.Kb1 Kc3 57.Rf3+ Kd4 58.Rf5 Rh4 59.Rf6 Rxh5 2. (4.19): 55.Kb1 a5 56.Rf5 Kc3 57.Rf3+ Kd4 58.Rf5 Rh4 59.Rf6 Rxh5 

Jan0314
  ajile: Reposted for reference.
<DaringSpeculator>
29. Nxd6+ Bxd6 30. R1g3 <e4> 31. <R3g4> Rab8 32.Rxe4 Rb5 33.Reg4 Rxf5 34.f4 Be7 Might be better since it negates White playing the Bxf6 variation. click for larger viewAnalysis by Rybka 3 32bit : 21 ply
2. µ (1.22): 34...Be7 35.Rg2 Rc5 36.e4 Rxc6 37.e5 Rb6 38.R6g3 g5 39.Kb1 f5 40.Rxd3 Ke6 41.Rf3 Rb5 42.d3 c6 43.Kc2 Rc5+ 44.Kd2 Rd5 This was Rybka's second choice but it's only 21 ply. 

Jan0314
  ajile: Reposted for reference.
Update:
29. Nxd6+ Bxd6 30. R1g3 <e4> 31. <R3g4> Rab8 32.Rxe4 Rb5 33.Reg4 Rxf5 34.f4 Be7 Doesn't seem to be working as well. So far I have this position with Black only 1 pawn up: Black to move:
click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. µ (1.07): 44...Ke6 45.Rd4 c5 46.Rh4 Kd5 47.Kc2 Rg6 48.Rf4 a5 49.Rf5+ Kd4 50.Rf8 Rg5 51.h4 Rg4 52.Rd8+ Ke5 53.Re8+ Kd5 2. µ (1.07): 44...Rd6 45.Rf3+ Ke6 46.Re3+ Kd5 47.Re7 c5 48.Kc2 Re6 49.Rd7+ Kc6 50.Ra7 Kb5 51.Rb7+ Rb6 52.Rd7 

Jan0514
  ajile: Reposted for reference.
28.c6 Nd6 29. Nxd6+ Bxd6 30.e4 Bc5 31.Rc1
It's actually an interesting line and has some pitfalls for Black. click for larger viewhttp://www.jepflast.com/chesstree/w... 30. e4 Bc5 31. Rc1 Bxf2 32. Rg4 <g5? computer move> 33.
fxg6+ Rxg6 34. Rf1!
click for larger viewBlack has to play 34..Bd4 and ends up with doubled d pawns.
White remains a pawn down but has liquidated his doubled f pawn. http://www.jepflast.com/chesstree/w... An important lesson to always check the computer lines. 

Jul3114
  ajile: Noble,Mark F  Nataf,IgorAlexandre
MTPinson/GM (FRA) ICCF, 01.07.2012
1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.c3 0–0 6.0–0 d6 7.Nbd2 Ne7 8.d4 exd4 9.cxd4 Bb6 10.Re1 Bg4 11.h3 Bh5 12.Qb3 d5 13.e5 Nd7 14.a4 a6 15.Be2 c5 16.e6 fxe6 17.Ng5 c4 18.Qd1 Bf7 19.Bg4 Nf5 20.Ndf3 Qf6 21.a5 Ba7 22.Qa4 Rad8 23.Nxf7 Qxf7 24.Ng5 Qf6 25.Nxe6 Nxd4 26.Nxf8 Rxf8 27.Be3
draw 

Jul3114
  cro777: <ajile: Black has a pawn for the exchange and active play. Too bad they didn't play this game out to the finish.> This is the highest level of chess. The final position is dynamically balanced, but this line offers the possibility to play a real game. 

Jul3114
  cro777: Position after 23...Qxf7
click for larger view[+0.00] d=38 24.Ng5 Qf6 25.Nxe6 Nxd4 26.Nxf8 Rxf8 27.Be3 Nc5 (Stockfish 5) The alternatives to the main line are 24.Bg5 and 24.Bxf5 

Jul3114
  cro777: The game could have continued:
click for larger view27...Nc5 28. Qb4 Nc2 29. Qd2 Nxe1 30. Rxe1
click for larger view 

Jul3114   yskid: <Jul3114
premium
member cro777: The game could have continued:
click for larger view
27...Nc5 28. Qb4 Nc2 29. Qd2 Nxe1 30. Rxe1>I just updated Analysis Tree, on ajile's suggestion, with my selected Infinite analysis output on the final position of this game, and the sequence you quote is in there too. 

Aug0614
  ajile: <cro777: yskid:> Thanks. 

Aug0814
  cro777: <ajile: So far I still like the 13.b4 d5 14.e5 Ne4 15.Bb2 variation ... I would be interested to know at what ply the computers are finding 15..f6 in this line.> Houdini 4 at 23 ply has 15...f6 as its principal variation with evaluation +0.14. 

Oct1714
  ajile: 25..Rd4
click for larger viewAnalysis by Rybka 3 32bit : 21 ply
1. (2.09): 26.Re2 Bh4 27.e7 Bxe7 28.Rxe7 Rxb4 29.Bc2 Rf2 30.Rxa7 Kf8 31.Rc7 Re2 32.Ra8+ Re8 33.Rxe8+ Kxe8 34.b3 Kf8 35.Kg3 Kg8 36.Kf3 Kf8 37.g3 Kg8 38.Ke3 Rb5 39.Ke4 Kf8 40.Kf4 2. ³ (0.68): 26.Rxd4 Bxd4 27.Rd1 Be5+ 28.g3 Kf8 29.Kg2 Bxb2 30.Rd7 b5 31.Bd1 Re5 32.Rxa7 Rxe6 33.Bf3 Rd6 34.Ra6 Rd2+ 35.Kf1 Be5 36.g4 c5 37.bxc5 

Oct1714
  ajile: 25..Rd4 line continued:
click for larger viewAnalysis by Rybka 3 32bit : 22 ply
1. (2.97): 35.Kg3 Kg8 36.Kf3 g5 37.Kf2 g6 38.Bd3 b5 39.Bc2 g4 40.hxg4 Rxg4 41.Rxc6 Rd4 42.Ke3 Rb4 43.Rb6 Kg7 44.Rb7+ Kg8 45.Kf3 2. (2.14): 35.Kg1 Rb6 36.Kf2 Rb5 37.Kf3 Rc5 

Dec2414
  WinKing: Merry Christmas & Happy Holidays to you & yours <ajile>! :) 

Dec2514
  wordfunph: <ajile> Merry Christmas! 

Apr2415   morfishine: <ajile> Just found your "Cool FEN Reverser" link Thanks, morf
***** 

Jul2115
  ajile: <morfishine: <ajile> Just found your "Cool FEN Reverser" link Thanks, morf>
Glad you like it. Can also be used as a simple text reverser. 

Jul2115
  ajile: I have reinstated my Premium Membership since the new Java Update has fixed the Chess Viewer Deluxe 2. 

Dec2515
  wordfunph: <ajile> Merry Christmas! 


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