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Vasily Smyslov vs Maxwell Leonard Fuller
Hastings (1968/69), Hastings ENG, rd 5, Jan-01
King's Indian Defense: Normal. King's Knight Variation (E60)  ·  1-0
ANALYSIS [x]

FEN COPIED

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sac: 26.Nf6+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 3 OF 3 ·  Later Kibitzing>
Dec-15-05  trumbull0042: It took me about 5 minutes to see the knight fork, another 20 minutes to see Qg6+ didn't fail to fxg6, and another 5 minutes to see that Rd7 cleaned things up. It pays to keep hacking at it.
Dec-15-05  TopaLove: <Jim Bartle> Who cares if people lie or not when they say they solved the puzzle? Besides people can use computers to solve it and claim they solved.
Dec-15-05  chesscrazy: I only got the first move, but couldn't calculate the rest. Oh well that ends my streak.
Dec-15-05  simsan: I saw the open diagonal for the queen, and the possibility of moving the knight to f6.

I missed the pin on the pawn (as far as enabling 27. Qg6+)and therefore thought the knight was much more "comfortable" on d6. Moving the knight to d6 would however leave my bishop on c4 "a little vulnerable" so I determined that 26. f3 was a good move (chasing away the queen).

Didn't really see any amazing continuations that wiped black off the table with my "good move", but decided I had to go with my pick or I'd loose on time :-)

In other words... I missed it :-(

Dec-15-05  Eatman: Got it very quick, because somehow it reminded me of the infamous missed mate from Sabo-Reshevsky in Zurich 1953.
Dec-15-05  TheKid: Note how White's 22nd move, <Qb1>, not only covers any possible King escape to h7, but, more importantly, covers the h5 square after 29...Ra1+, when White's combination would turn quite embarrassing. Whether foreseen by Smyslov or not, it's still interesting!
Dec-15-05  TheKid: Having looked at it further, it seems this was the only decent square for the Queen...
Dec-15-05  DanielBryant: In a game, I probably would have played Rd6 to threaten Rxh6.
Dec-15-05  midknightblue: a strong player with good tactics would probably see this every time. Me? I missed it. Give me a year, and I wont miss another one like it.
Dec-15-05
Premium Chessgames Member
  YouRang: Black is lost either way, but I don't know why Black played 28...Kh8, since it loses immediately. Black at least puts up some fight with 28...Kh7. However White still wins with:

29. Be6 (chasing the queen away) Qxb4 (say)
30. Bf5+ Kh8 (forced)
31. Qg6 (threatening Qh7#) Qe1+
32. Kh2 (and black will be mated soon).

Dec-15-05  TTLump: <Koster> 26.Nd6 is answered by ... Nd5, and then it does not look like such an easy win for white, unless I have overlooked something ...
Dec-15-05  TTLump: <YouRang> lets see, after 28 ... Kh7, 29.Be6??, Black replies with Qxd1+ and white is lost.

after 28 ... Kh7, 29.Rd7 is still best, winning the Queen or mate in just a few moves.

Dec-15-05
Premium Chessgames Member
  YouRang: <TTLump> Sorry, I lost track of the order and mentally skipped a move -- I meant to play Be6 AFTER Rd7, as follows:

29. Re7 Ne8 (protect the bishop), and THEN...
30. Be6 (chasing the queen away) Qxb4 (say)
31. Bf5+ Kh8 (forced)
32. Qg6 (threatening Qh7#) Qe1+
33. Kh2 (and black will be mated soon).

Dec-15-05  Koster: <TTLump> Nd5 may be black's best chance, but after 27. Bxd5 cxd5 28. Rxd5 white is a pawn up with a dominating knight on d6, and is threatening to play Nxb7 or simply advance and create a passed pawn on c6, neither of which can black really prevent. So black might get tricky with 28...e4 29. Nxe4 Ra1 pinning white's queen, but this rebounds against him after 30. Rd8+ (Bf8 Nf6+, or Kh7 Nxg5#). I saw this and would play it, unless I saw something better, as Smyslov did. Nd6 is plenty good enough, but I knew it wasn't the solution as it was too obvious and not part of a combination.
Dec-15-05
Premium Chessgames Member
  patzer2: Smyslov's clearance move 26. Nf6+!! is today's puzzle solution. In addition to the clearance tactic, this winning tactical shot also serves as a deflection in setting up a winning double attack after 29. Rd7!
Dec-15-05  LivBlockade: My first post. I found this to be an interesting puzzle. I spent quite a bit of time trying to work out the line that <YouRang> and others have mentioned with 28...♔h7. I was happy with the following variation: 26. ♘f6+ ♗xf6
27. ♕g6+ ♗g7 (if ...♔h8 then ♕xf6+)
28. ♕xf7+ ♔h7 (seems much more challenging than ...♔h8) 29. ♖d7 ♘e8 (if ... ♕xd7 White should win quickly - ♗lack's queenside pawns are weak)

30. ♗e6 (seems like the clearest win to me) ...♕e2 (or ♕xb4)

31. ♗f5+ ♔h8
32. ♕g6 (this is where others ended their analysis, but I like the following finish) 32. ... ♔g8
33. ♖xg7+ (remove the defender of the h6 square) ♘xg7 34. ♗e6+ ♔h8
35. ♕h6 mate

Dec-15-05
Premium Chessgames Member
  tpstar: <LivBlockade> Hello! Welcome to the group! Very nice analysis on today's puzzle - looks clean. Working on tactics and analyzing variations are surefire ways to improve our game. See you later.
Dec-15-05  TTLump: <Koster> The point is that after black's blunder, 25... Nc7?, there are many decent white moves leading to a win, but black's position was already difficult for him and had he played the best move in the situation, 25... Rd8, he was still losing.

Taking your line to its ultimate conclusion would certainly lead to a win for white, barring any blunders, which is unlikely, considering who was in charge of the white pieces.

For my money, the best part of this game is the remarkable Knight mini-tour by white in moves 19, 20 and 21. Each move results in a slight improvement in white's position, and most of black's responses are virtually forced, leading up to the Knight/Bishop exchange and the 'accidentally' brilliant 22.Qb1! Black probably thought nothing special of this move because he had 'forced' it with 20.Ra8, while establishing his own potential back rank mate threat. It was probably his reluctance to give up this 'threat' that led to the 25... Nc7? blunder.

When you look at this in hind-sight, it seems likely that white saw the final position as far back as move 18.Rd1. He executed a brilliant combination to force the exchange of his Knight for black's light square bishop, all the while eyeing the weak white squares in front of black's king and in the back of his mind, he was almost certainly contemplating the possibility that black would not want to give up his rook's post at a8!

Dec-15-05  TTLump: <YouRang>, yes, that is one of the more likely variations in this puzzle.

It would be an interesting thing to know just how far back in the game Smyslov had analyzed the Knight sac to this level of detail.

Dec-15-05  TTLump: <YouRang> ... But ... Looking at your variation a little closer, after 30.Be6, Qxe6 is black's best option for prolonging the agony, but not for very much longer!

Dec-15-05
Premium Chessgames Member
  crafty: 26. f3 ♕f5 27. g4 ♕g6 28. ♖d7 ♘e6 29. ♕d1   (eval 2.16; depth 15 ply; 250M nodes)
Dec-16-05  Averageguy: <LivBlockade> Hello! Your analysis looked good but I think that 29...Ne8 fails to 30.Qg8#
Dec-16-05
Premium Chessgames Member
  tpstar: <AverageGuy> Those lines cover 28 ... Kh7 as an improvement over the game continuation (28 ... Kh8) which lost more quickly.
Dec-16-05  Averageguy: <tpstar><LivBlockade>Whoops, sorry about that.
Nov-02-13
Premium Chessgames Member
  FSR: Fuller Brush.
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