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Albert Zinovievich Kapengut vs Vladimir Antoshin
Moscow (1965), Moscow URS
Italian Game: Scotch Gambit. Anderssen Attack (C56)  ·  1-0

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Nov-17-03
Premium Chessgames Member
  patzer2: If 18...Kg5 19. f4+ Kf5, then 20. Rxh6+ Ke4 21. Qd3#.
Nov-17-03
Premium Chessgames Member
  patzer2: An interesting mating possibility after 16...Kg5 is 17. Qf7! Qf5 18. h4+ Kg4 (if 18...Kf4 19. Rae1 Ne5 20. R6xe5 Kg4 21. Qxf5+ Kxh4 22. R1e4# or 18...Kf4 19. g3+ Kg4 20. Rg6+ Qg5 21. Kg2 Ne5 22. f3+ Kh5 23. Rxg5#) and white can now mate two ways

+- (#4) 19. Rg6+ Qxg6 20. Qxg6+ Kf4 (if 20... Kxh4 21. g3+ Kh3 22. Qh4#) 21. Re1 Bg7 22. Qe4# (or 22. Re4#).

+- (#6) 19. f3+ Kg3 (if 19...Kf4 20. Re4+ is #4) 20. Rg6+ Qg5 21. Qxc7+ Bd6 22. Qxd6+ Ne5 23. Qxe5+ Kxh4 24. Qh2#

Nov-17-03  talchess2003: <You are correct that 15. Nd5+ Kd8 16. Nf6+ Ke7 leads to nothing but a repetition of the position> 15. Nd5+ is winning..

Here's my analysis:

15. Nd5+ Kd8 16. Nb6+ and now both 16. Kc8 and Ke8 lead to an immediate mate, and if black moves Ke7 then the king will be voyaging into the same squares as in the game.

15... Kf6 16. Qf3+ Qg8 17. Qg5+ Bg7 18. Qxe6+ Kf8 (18.. Kg8 19. Qf7 h5 20. Nf6+ Kh6 21. Ng4+ hxg4 22. Re6+ Kg5 23. Qxg7+ Kf5 24. Qf7+ and the game will end in a similiar voyage by the king) 19. Qf5+ Kg8 20. Ne7+! Good Game.

An interesting line is 15.. Ke8 but after 16. b4! Qa4 (16.. Qa6 17. b5! or 16.. Nxb4 17. Nxb4 Qxb4 18. Rxe6+ Kf7 19. Qd7+ 1-0) 17. Nxc7+ Kf7 18. Qd7+ Kg8 19. Rxe6 and its all over

I agree that if you can mate a guy two ways, it is best to go with the easiest way since in tournament play there are time controls... but don't disregard Nd5+ it is a winning move!

Nov-17-03
Premium Chessgames Member
  patzer2: <talchess2003> Appreciate your attempt to revive 15. Nd5+! You had me convinced till I plugged 15. Nd5+ Kd8 16. Nb6+ into Fritz 8 for analysis. Bottom line is that this sequence gives white slightly better than equality, but it is unclear whether it gives anything more.

Fritz 8 analyzes 15. Nd5+ Kd8 16. Nb6+ Bd6 17. Nxa8 Kc8 18. Rxe6 Kb8 19. Nxc7 Bxc7 20. Qe2 Rd8 21. Re8 Bf4 22. Rxd8+ Qxd8 = (+0.22 @ 13/52 depth & 754kN/s). If white can exchange off the queens in the analyzed position, the white kingside pawn majority looks imposing in the end game. So, the analyzed position may offer white better than equality, but the best I can see is an unclear position with chances for both sides in the middle game and a possible end game advantage for white if he can force an ending.

Note: I'm beginning to mistrust some of Fritz's analysis of equality since the debacle by Fritz X3D against Kasparov yesterday.

Nov-17-03  crafty: 15. ♘d5+ ♔d8 16. ♘b6+ ♗d6 17. ♘xa8 ♕f5 18. c4 ♔e7   (eval 1.13; depth 13 ply; 750M nodes)
Jun-03-04  jsastre48: Masterfully conducted attack exploiting the gaines of time that the gambit allows!
May-13-05  mirunik: what about 14. ... kxf6 !? and i can't find nothing for white ???? can you give me some variants ????
Jul-02-09  sneaky pete: Can any of you Fritz-fiends answer <mirunik>s question after 4 years?

Anyway, it's irrelevant really. Every Russian schoolboy (except Kapengut) knows that, instead of the premature 14.Nxe6 .., white should play 14.b4 .. first.

Sep-16-20  Nullifidian: 15. ♕d7+ ♔xf6 16. ♖xe6+ ♔g5 and now you have the choice of mate in 6 with either 17. ♙f4+ or ♙h4+.

For example, if 17. ♙f4+, then play might continue:

17... ♔h5 18. ♕d3 (Δ ♕h3#) ♗c5+ 19. ♔h1 ♗e3 20. ♕g6+ (♕xe3? ♕f5 covers the h3 square and it's no longer mate in 8, though white is still winning) ♔h4 21. ♕g3+ ♔h5 22. ♕h3#

And if 17. ♙h4+, then play might continue:

17... ♔h5 18. ♕f7+ ♔xh4 19. ♕f4+ ♔h5 20. ♙g4+ ♔h4 21. ♕g3+ ♔g5 22. ♙f4#

Sep-16-20  saturn2: 15. Qd7+ Kxf6 16. Rxe6+ Kg5 
I took 17. f4 because after Kxf4 white can incorporate the next piece in the attack: 18 Rf1. Otherwise mate soon:

...18 Kg4 19 Rh6+ or
...18 Kh4 18. g3+ Kh5 19. Qf7+
...18 Kh5 similar

Sep-16-20
Premium Chessgames Member
  FSR: Play 15.Qd7+ Kxf6 16.Rxe6+ and then work out the best way to mate after 16...Kg5 is on the board. As people have said, either 17.f4+ or 17.h4+ will easily suffice.
Sep-16-20  Walter Glattke: Found immediately 15.Qd7+ Kxf6 16.Rxe5+ Kg5 17.h4+ with mating, no escape from checks. 17.-Kxh4 18.Rf4+ Kg5/h5 19.Qg4# 17.-Kg4 18.Re4++ Kh5 19.Qg4# 17.-Kf4 18.Qf7+ Qf5 19.g3+ Kg4 20.f3+ wins 17.-Kf5 18.Qf7+ Kg4 19.Re4# White wins with 15.Nd5+, too.
Sep-16-20
Premium Chessgames Member
  agb2002: White has a pawn for a bishop.

Black threatens Kxf6.

White can start a mating attack with 15.Qd7+ Kxf6 16.Rxe6+:

A) 16... Kf5 17.Qf7+

A.1) 17... Kg5 18.Rg6+ Kh5 (18... Kh4 19.Qf4+ Kh5 20.Qg4#) 19.Rg3+ Kh4 20.Qf4+ Kh5 21.Qg4#.

A.2) 17... Kg4 18.Re4+ Kg5 19.h4#.

B) 16... Kg5 17.h4+

B.1) 17... Kxh4 18.Re4+ Kg5 (18... Kh5 19.Qg4#) 19.Qg4+ Kf6 20.Re6+ Kf7 21.Qg6#.

B.2) 17... Kf4 18.g3+ Kf5 (18... Kf3 19.Qd1#; 18... Kg4 19.Re4+ Kf3(h5) 20.Qg4#) 19.Rxc6+ Ke5 (19... Ke4 20.Qd3+ Ke5 21.f4#) 20.Qe6+ Kd4 21.Rc4#.

B.3) 17... Kf5 18.Qf7+ Kg4 19.Re4#.

B.4) 17... Kg4 18.Re4+ Kh5 19.Qg4#.

B.5) 17... Kh5 18.Qd1+ Kxh4 19.Re4+ Kg5 20.Qg4+ Kf6 21.Re6+ Kf7 22.Qg6#.

Sep-16-20  Brenin: Easy to see 15 Qd7+ Kf6 16 Rxe6+ Kg5, and then work out the details of the mate with 17 f4+ or h4+. Black should have played 14 ... Kxf6, and then headed for safety via g6 and h7, if necessary giving up Q for R. White could have prevented this defence with the deflection 14 b4 first (14... Qxb4 15 Nd5+, 14 ... Nxb4 15 Nxe6).
Sep-16-20  mel gibson: Very easy puzzle.

Stockfish 12 says mate in 8.

15. Qd7+

(15. Qd7+ (♕d1-d7+ ♔e7xf6 ♖e1xe6+ ♔f6-g5 h2-h4+ ♔g5-h5 ♕d7-d1+ ♔h5xh4 ♖e6-e4+ ♔h4-g5 ♕d1-g4+ ♔g5-f6 ♖e4-e6+ ♔f6-f7 ♕g4-g6+) +M8/81 43)

Sep-16-20
Premium Chessgames Member
  malt: 15.Qd7+ K:f6 16.R:e6+ Kg5 17.h4+ Kh5

(17...K:h4 18.Rg6 Bc5+ 19.Kh1 wins )
(17...Kg4 18.R:h6+ Qf5 19.Rg6+ Kf4 20.Rf1+ )

18.Qd1+ K:h4 19.Re4+ Kg5 20.Qg4+ Kf6 21.Rf1+ Qf5 22.R:f5#

Sep-16-20
Premium Chessgames Member
  malt: My line on (17...Kg4 18.Rh6+ )

Missed 18.Re4+ Kg3 19.Qg4#
a quicker ending.

Sep-16-20  TheaN: Somehow, I was more drawn to the direct approach <15.Qd7+ Kxf6 16.Rxe6+> so far, relatively obvious <16....Kg5 (Kf5 17.Qf7+ #2) 17.f4+ #5>


click for larger view

Though I can't say for sure, the pending option of Rf1+ probably played a part. Usually the sidewinder (h4+) is more effective in these situations because it will force the enemy king closer to less space. Here, it's apparently similar.

After 17....Kxf4 18.Qf7+ Qf5 19.Rf1+, 17....Kf5 18.Qf7+, 17....Kh4 18.g3+ forces Black on light squares, and this is actually similar after 17....Kh5 18.Qf7+ Kh4 19.g3+! as after 19....Kh3 20.Qd7+! and the question to Black is how to prevent a rook move anyway. Regardless, all lines lead to a quick mate and unless White really runs out of forcing moves, not all too difficult.

Sep-16-20
Premium Chessgames Member
  chrisowen: Ties viva thou qd7+ gack aortad conc jack arrive ogle food budums maters havers 7 kxf6 etcetera viva aeon ivor jive adrift adds knight fxe6 feints gack accumulate viva ammo kick mack viva ties cobs fobs nets kens viva rentokil queries quarry viva ways hang exodus dims made puzzle viva ohms july its bins till viva domicile viva chef fritzy viva ohms waygroup qd7+ gack aortad conc jack arrive ogle tots adds ehhs adbs iesa huhs awooga jobs viva diligent qd7+ eh?
Sep-16-20  Cellist: I saw the moves until 17, but then planned to play 18. Re4+, which also leads to mate, just a move later than the (elegant) game line. - This looks like a game situation where many would be tempted to play 15. Qd7+ without thinking, trusting that forcing the king out into an open minefield will work out in the end. But the position of the black Q, B, and N urged me to calculate.
Sep-16-20
Premium Chessgames Member
  Predrag3141: Thank you <Thean> for your in-depth analysis of 17 f4 vs. 17 h4. Not knowing the principle behind 17 h4+ of trapping the king on the edge, the only principle guiding my choice was to activate a rook with 17 f4+.

Both principles are realized in sub-variations Black should avoid to survive longer:

- 17 h4+ Kxh4 18 Rg6 (as played) traps the king on the edge.

- 17 f4+ Kxf4 18 Qf7+ Qf5 19 Rf1+ activates White's rook.

Sep-16-20
Premium Chessgames Member
  chrisowen: Tear it up oh no my friend no?
Sep-16-20
Premium Chessgames Member
  saffuna: I would look to play 15. Qd7+ immediately. Drive the black king onto the open board with the queen and a rook chasing it.
Sep-16-20  newzild: 15.Qd7+ Kxf6 16.Rxe6+ Kg5 was easy enough to see, but apart from 17. h4+ and 17. f4+, I also considered 17. Qf7 as a candidate move.
Sep-16-20  Shrinarayanan: I went with Rxe6+; seemed to have good contunuation.
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