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Victor Ciocaltea vs Corvin Radovici
Bucharest (1968), Bucharest ROU, rd 12, Mar-25
King's Indian Defense: Fianchetto Variation. Classical Fianchetto (E67)  ·  0-1

ANALYSIS [x]

FEN COPIED

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Mar-03-19  landshark: <Clement41>
I think if 25.Qc5, then just ...Bg4 resuming the threat of ...Qh2 which looks crushing. White might try 26.e4 hoping to make a flight square for his K but runs into ...Rxf3 27.Bxf3 Qxf3 and now the threat of ...Ng3# has reappeared and White cannot possibly hold on. I can't see any other reasonable try for White on move 26 in this line -
Mar-03-19
Premium Chessgames Member
  jith1207: That's a ridiculously overwhelming position. Toasted!

I got the theme but was focusing on sacrificing queen on the e file, when g file comes with all dangers as illustrated.

Mar-03-19
Premium Chessgames Member
  OrangeTulip: Overwhelming is the word! Reminds me of the attack by the orks on the citadel city in Lord of the Rings
Mar-03-19  Walter Glattke: The final move threatens a kind of smothering mate II with 28.Nc5 Qf1+ 29.Nxf1 Ng3#
Mar-03-19
Premium Chessgames Member
  ajk68: 10. dxe5 doesn't advance white's game.

White missed 17...Nxg3 18. Nxc6!!

Mar-03-19  MrMelad: I saw the first move, thought black will continue with 24..Ng3+ and then

25.fxg3 (forced) ..Qxg3+ 26.Be3

but I wasn't sure how to continue from there. I did think I got the solution for the first couple of moves but the text seems much stronger than what I had in mind. The computer, however, seems to think my line is also winning for black.

Mar-03-19
Premium Chessgames Member
  morfishine: White's rooks form an immovable sarcophagus sealing in the White King

Meanwhile, Black's Knights on <h5> and <h3> maintained a permanent threat of a suffocating mate

Knights on the rim made White's prospects dim

Mar-03-19  GlennOliver: One of the most complex endgames I've ever seen.

Even as shown above, at the point of resignation, the remaining moves which would force the win are not obvious, e.g.

28. Bxa7 Bxf3 29. exf3 N5f4 30. Qd5+ cxd5 31. Rxe5 Qg1#

Mar-03-19  Walter Glattke: Glenn Oliver, see above, 28.Bxa7 Qf1+ 29.Nxf1 Ng3# "smother-like".
Mar-03-19  DonChalce: finally! some apreciation for my romanian bro! even if it is a loss.
Mar-03-19  MrMelad: <Walter Glattke> I thought so too at first but 29...Ng3 is not mate since 30.Qxg3 is possible and totally winning for white.
Mar-03-19
Premium Chessgames Member
  Willber G: <MrMelad: <Walter Glattke> I thought so too at first but 29...Ng3 is not mate since 30.Qxg3 is possible and totally winning for white.>

30.Qxg3 is not possible - the bishop on e3 blocks it.

Mar-03-19
Premium Chessgames Member
  thegoodanarchist: I had to recuse myself, having seen this in the Encyclopedia of Chess Middlegames.
Mar-03-19  MrMelad: <Willber> On this variation the bishop is on a7.
Mar-03-19  scutigera: Black's 26th is amusing: he sets up the usual queen-bishop battery, but with the object of defending the queen, with the bishop, by attacking towards his own side of the board.
Mar-03-19
Premium Chessgames Member
  patzer2: White's decisive mistake appears to be 19. Qb4?, allowing 19...f4 20. Bc1 Ng5! -+ (-2.44 @ 31 ply, Stockfish 10).

Instead, 19. Bc1 = (-0.09 @ 34 ply, Stockfish 10) appears to give White near level chances in a complicated position.

In the opening, I'm not a fan of 8. h3 even though it is the second most popular move according to our Opening Explorer.

I prefer the popular, active move 8. e4 as in White's win in Van Wely vs T Todorov, 2018. If White wants to keep the game more positionally complicated, the quiet but strong 8. b3 ⩲ to ± (+ 0.87 @ 31 ply, Stockfish 10), as in White's win in M Rodshtein vs P Natacheev, 2018, is a good alternative.

Mar-03-19
Premium Chessgames Member
  whiteshark: White played largely aimlessly during the game.
Mar-03-19
Premium Chessgames Member
  patzer2: Today's Sunday puzzle (23...?) is an excellent position to use for the study and teaching of simple but not often seen mating tactics, especially if you break it down to two and three move mates and work it back from the end of the game until the start of the combination with 23...f3!!

One of my younger Grandson's, who is just beginning to study tactics, is currently studying simple mates. He just finished a beginners book of one to three move mates, so I'll ask him to find the mate-in-one after 28. Nxh2 (diagram below)


click for larger view

28...Ng3#!

Then I'll ask him to solve the mate-in-two after 27. Nxe5 (diagram below)


click for larger view

27...Qxf2+ 28. Bxf2 Rxf2#.

Finally, I'll ask him to solve the mate-in-two which occurs after 23...f3!! 24. exf3 Qh2 25. Bxf3 (diagram below)


click for larger view

25...Ng3+! fxg3 26. Bxh3#.

Mar-03-19
Premium Chessgames Member
  Willber G: <MrMelad: <Willber> On this variation the bishop is on a7.>

My mistake.

Mar-03-19  Carlos0012358: 27.Qd3 was an awful idea!!
Mar-03-19  FlashinthePan: <MrMelad: <Willber> On this variation the bishop is on a7.> That's correct, but then Black mates with the simple 29...Rxf2# instead of with the knight on g3, which can indeed be taken by the white queen.
Mar-03-19
Premium Chessgames Member
  agb2002: The flashy move 23... Qe3 is met with 24.Qxf8+.

Another option is 23... f3 with the double threat fxg2 and Qh2:

A) 24.Nxf3 Ng3+ (24... Qh2 25.Qxf8+ + -) 25.fxg3 Qxg3

A.1) 26.Be3 (26.Bxh3 Bxh3#) 26... Bh6 27.Qd2 (27.Bxh6 Qf2#; 27.Bg1(d4,c5) Nf4 and mate soon) 27... Re8 looks winning.

A.2) 26.Qc5 Bg4

A.2.a) 27.Rd2(3) b6 28.Qe3 Rae8 wins decisive material.

A.2.b) 27.Be3 b6 28.Qb4(a3) Bxf3 20.exf3 (20.Bxf3 Rxf3+ 21.exf3 Qxf3+ 22.Bf2 Qxf2#; 20.Bxh3 Bg2+ 21.Kg1 Bxh3+ 22.Kh1 Qg2#) 20... Rxf3+ and mate in two.

B) 24.Bxf3 (or Bh1) 24... Qh2 and mate soon.

C) 24.exf3 Qh2

C.1) 25.Bxh3 Ng3+ 26.fxg3 Bxh3#.

C.2) 25.Re7 Qg1+ 26.Ke2 Qxf2+ 27.Kd3 Qxg2 wins decisive material.

Mar-03-19  MrMelad: <Willber G> I made the same oversight and had to play the position on the board to get it right.

<FlashinthePan> Ehh, nice try but 29..Rxf2 is not mate, 30.Bxf2 is a buster.

It seems the unorthodox position of the bishop on a7 is confusing, nice defensive resource by <Glenn Oliver>. Indeed the final position is not a trivial tactical blow.

Mar-03-19  sudoplatov: Stockfish suggests that 28.Bf4 (continuing to utilize the h2-b8 boulevard) as the best defence leading to Mate in 8.
Mar-03-19  FlashinthePan: <MrMelad> Yes, I overlooked the bishop on a7, my bad.
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