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Laurent Fressinet vs Evgeny Postny
6th European Individual Championship (2005), Warsaw POL, rd 4, Jun-21
Spanish Game: Morphy Defense. Chigorin Defense Panov System (C99)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 2 ·  Later Kibitzing>
May-11-09  returnoftheking: A little played variation (??) for black that looks very ok. I can find only two games with this line (move 15) and player above 2600 in the chessbase database -other is Kramnik vs I Sokolov, 2005 from the same year. Although white won both games with a crushing mating attack black's position after the opening is at least equal- according to the engines. 25. ..Rxf5 26.Nh6 gxh6 27.Qg4 Rg5 28.Qe6 Lf8 29. Qxh6ch is a tricky variation-i initially only saw Rg5 and missed Qe6. But I guess GM's don't even think about a move like Rxf5
May-11-09  returnoftheking: Kramnik vs I Sokolov, 2005
May-26-15  lost in space: POD May 26th 2015

The main lines are:

39. Rxf6! Qxe4
(39...Rcxf6 40. Qxe7 Rxe7 41. Bxf6+ Kg8 Rxe7 and White is a rook up)

40. Rxf7
(40..Kg8 41. Rg7+ Kf8 42. Rxe4 and White is a rook up)

Qxd4 41. Re8#


click for larger view

May-26-15  dfcx: The "normal" play would have been 39.Qxe7 Rxe7 40.Rxe7 hxg6 with a slight advantage to white.

However the pin on the diagonal can be exploited.
39.Rxf6!
If black takes the queen,
A. 39...Qxe4 40.Rxf7+ Kg8 (Qxd4? Re8#) 41. Rg7+ Kf8 42.Rxe4

B.39...Rbxf6 40.Qxe7 Rxe7 41.Rxe7
C.39...Rfxf6 40.Qxe7
D.39...Qxf6 40.Bxf6+

May-26-15  M.Hassan: "Easy"
White to play 39.?
Equal in forces.

The long black diagonal has White's DSB
and at the end of this diagonal Black King is modestly sitting and waiting for his unpleasant destiny

39.Rxf6
A) 39...........Rcxf6
40.Qxe7 Rxe7
41.Bxf6+ Kg8
42.Rxe7
White will be winning

B) 39...........Qxe4
40.Rxf7+ Qxd4
41.Re8#

if 41.........Kg8
42.Rg7+ Kf8
43.Rxe4
White winning

May-26-15  BxChess: I thought 39. Qxc6 whence play might continue 39...Qxe1+ 40. Kh2 Qe7 (what else?) 41. Rxd6 and its practically over for Black.
May-26-15  Moszkowski012273: <BxChess> ???????
May-26-15
Premium Chessgames Member
  agb2002: The material is identical.

Black threatens 39... Qxe4 40.Rxe4 hxg6.

The white bishop x-rays the black king. This suggests 39.Rxf6:

A) 39... Qxe4 40.Rxf7+

A.1) 40... Qxd4 41.Re8#.

A.2) 40... Kg8 41.Rg7+ Kf8 42.Rxe4 + - [R+P].

A.3) 40... Rf6 41.Bxf6+ Kg8 42.Rg7+ Kf8 43.Rxe4 + - [2R+P].

B) 39... Rcxf6 40.Qxe7 Rxe7 41.Rxe7 followed by 42.Bxf6 + - [R+P].

C) 39... Rfxf6 40.Qxe7 wins.

D) 39... Qxf6 40.Bxf6+ Rfxf6 (40... Rcxf6 41.Qxc4 + - [Q+P vs R]) 41.g4 + - [Q+P vs R+P]. For example, 41... Bb3 42.g5 Rfd6 (42... Bc2 43.Qe8+ Kg7 44.Re7+ Rf7 45.Rxf7#) 43.Qe8+ Bg8 (43... Kg7 44.Re7+ Bf7 45.Rxf7#) 44.Qe5+ Rf6 45.gxf7 wins.

E) 39... Kg8 40.Qxe7 Rxe7 41.Rxe7 + - [R+P].

May-26-15  anandrulez: The saturday puzzle Rxh7 was much easier. This one is fine but its more than 1.5 around 3 in terms of difficult.
May-26-15  diagonalley: hard for a tuesday
May-26-15
Premium Chessgames Member
  jith1207: I think there are more than one way to win but the line in the game seems to be a good one And limits the possibility of an escape for black more unrealistic. I missed that queen striking bishop actually opens a mating net for White's rook. I seem to miss a lot of such vision while playing the game through in my mind. That's just one of the weaknesses in my game. And a Tuesday puzzle exposing that to me doesn't bode well for the week ahead. :-O
May-26-15
Premium Chessgames Member
  jith1207: The final position in the game line is so beautiful that all white pieces are under attack and have no support yet black cannot capture a piece and stop being mated. As the saying goes, "the opponent can only capture your piece one at a time ". Even if black doesn't capture any one of White's three pieces and moves king to Kg8, 41. Rg7+ Kf8 42. RxQ does it for white.
May-26-15
Premium Chessgames Member
  jith1207: <diagonelly> I love reading your honest comments Always. Of late, I'm noticing a trend in this website that Tuesdays always give me a tricky challenge even more than some of the days later in the week. Can't appreciate the Admin enough for finding such gem of a puzzle every time. Now that tricky Tuesday is done for the week, I gleefully look forward to whacky Wednesday. ;-)
May-26-15
Premium Chessgames Member
  morfishine: Took me awhile to finally figure out <39.Rxf6> is the way to go

39...Qxe4 40.Rxf7+ Kg8 (40...Qxd4 41.Re8#) 41.Rg7+ Kf8 42.Rxe4 and White is up a rook

*****

May-26-15  zb2cr: 39. Rxf5 seems to win a Rook for White.
May-26-15  CHESSTTCAMPS: In this opposite-colored bishops middle-game, white is attacking (with the black king in a tight spot), so Botvinnik's dictum applies: white is effectively a piece ahead. Black would appear to have the critical f-pawn sufficiently protected, but there are overloads and discovered checks in play.

39.Rxf6! wins decisive material:

A) 39... Qxe4 40.Rxf7+ Kg8 (Qxd4 41.Re8#) 41.Rg7+ Kf8 42.Rxe4 a2 43.Ra7 Bf7 (otherwise 44.Bg7+ forces mate) 44.Rxa5 and white retains an extra R+2Ps with no danger from black's a-pawn.

B) 39... R6xf6 40.Qxe7 Rxe7 41.Rxe7 and Rf6 falls.

C) 39... Kg8 40.Rxc6 Qxe4 41.Rxe4 Bd4 42.Rc8+ Rf8 43.Rg4+ Kf7 44.Rg7+ cleans up.

D) 39... R7xf6 40.Qxe7

May-26-15
Premium Chessgames Member
  patzer2: Interesting and instructive Ruy Lopez game for today's (39. ?) Tuesday puzzle. Here's my look with Deep Fritz 14x64 (i7-4790 4 CPU @ 3.6 GHz):

<25...Nf6?> Black succumbs to the Spanish torture with this positional error, allowing <26. Nxf6 gxf6 27. Re3! > (+1.26 @ 24 depth).

Instead 25... Kh8 29. Qd6 Rxf5 = to (+0.29 @ 25 depth) keeps it about level

<38...Qe7> This makes it an easy win for White.

Black can put up more resistance with 38...Rd6, when White has to work harder to find a winning continuation like 39. Rg3! a2 40. Bxf6+! Rdxf6 41. Qxc4 Rxf5 42. Qd4+ R7f6 43. Re2! Qb8! 44. Kh2! h5 45. Rxa2 Qe5 46. Qc4 Qd5 47. Qc8+ Rf8 48. Qc1! Kh7 49. Rd2 Qe6 50. Rd4! Rg8 51. Qc7+ Rf7 52. Qxa5 Rf5 53. Qc7+ Rf7 54. Qc5 Rf5 55. Qc2 Rxg3 56. fxg3 Kg7 57. Qd3 (+10.12 @ 29 depth).

<39. Rxf6!!> This solves our Tuesday puzzle.

The tempting 39. Qxe7 equalizes after 39...Rxe7 40. Rxe7 hxg6 41. fxg6 a2 =.

White can also win with 39. Rb1! when play might go 39..hxg6 40. Qxc6 Bd3 41. Rb8+ Kg7 42. Re8 Qb4 43. Bxf6+ Rxf6 44. Qc7+ Rf7 45. f6+ Kxf6 46. Qe5#.

<39... Qxe4>

If 39... Qxf6, perhaps the strongest winning reply is 40. Qe8+! Kg7 (40... Rf8 41. Qxf8+ Bg8 42. Qxf6+ Rxf6 43. Bxf6#) 41. Re4! as play might continue 41...Qxd4 (41... Rf8 42. Rg4+ Kh6 43. Bxf6 Rcxf6 44. Qe3+ Kh5 45. Qg5#) 42. Rxd4 Rfc7 (42... a2 43. Rg4+! Rg6 44. Qe5+! ) 43. Rd7+ Kh6 (43... Rxd7 44. Qxd7+ Kf8 45. Qxc6 ) 44. Qe3+ Kh5 45. g4+ Kh4 46. Qg3+ Kg5 47. h4+ Kf6 48. Qc3#.

<40. Rxf7+!> Not 40. Rxe4? Rfxf6 =.

Black resigns in lieu of 40...Kg8 (40... Qxd4 41. Re8#) 41. Rg7+! (Not 41. Rxe4? Kxf7 =) 41... Kf8 42. Rxe4 (+10.05 @ 21 depth).

May-26-15
Premium Chessgames Member
  whiteshark: <diagonalley: hard for a tuesday> Agreed!
May-26-15
Premium Chessgames Member
  patzer2: Though <13. Bb7> had nothing to do with Black losing this game , an alternative opening choice I find interesting is 13...Bd7 = as in Black's win in M Szelag vs D Howell, 2015.
May-26-15
Premium Chessgames Member
  Penguincw: Damn it, am I the only one who's 0/2 this week?

Anyway, the line I chose was was 39.Rg8+ Kxg8 40.Qg4+ Rg7 41.Rxe7 Rxg4 42.hxg4, which isn't really a bad line, but it's drawish.

May-26-15  starry2013: Now I know it's not a checkmate week I can look differently.

BxF6 seems like it would be the move but it didn't seem to work for me. I ended up winning but not really through as big an advantage as I expected. No doubt there is some better way, but still, I won from here...

1. Rxf6 2.Qxe4 Rxe4 3.Rfxf6 Bxf6+ 4.Rxf6 Rxc4 5.Rxf5 Ra4 6.Rd5 Rxa3

May-26-15  wooden nickel: 39.Rb1! is tempting, because QxQ, then Rb8+ leading to mate and If 39... hxg6, then 40.Qxc6 would lead to a strong position for White


click for larger view

But like Lasker says <If you see a good move look for a better one.> 39.Rxf6!... best try for Black is Qxf6, after trading down


click for larger view

the White pawn majority will conquer!

May-26-15
Premium Chessgames Member
  patzer2: <wooden nickel> Good comments! Enjoyed your post.

However, after looking at 39. Rxf7!! Qxf6 40. Qe8+! or 39. Rxf7!! Qxf6 40. Qh4! in depth with Fritz, it would seem Black is likely to get mated before White's pawn majority comes into play.

May-26-15  jhoro: <Penguincw: Damn it, am I the only one who's 0/2 this week?>

You are not alone. Never had I been 0/2 on CG before. I must be getting dumber much faster than I thought

May-26-15  wooden nickel: <patzer2>Thanks, I'm sure you're right... I had following in mind 39.Rxf6 Qxf6 40.Bxf6+ Rfxf6 41.Qe8+ Bg8 42.g4 where White's pawn majority dominates the game.


click for larger view

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