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Bent Larsen vs Franciscus Antonius Kuijpers
Hoogovens (1967), Beverwijk NED, rd 11, Jan-24
Queen's Gambit Declined: Harrwitz Attack (D37)  ·  1-0


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sac: 27.Nxf7 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 1 OF 3 ·  Later Kibitzing>
Sep-15-10  goldfarbdj: Saw up through white's 29th pretty easily.
Premium Chessgames Member
  Marmot PFL: 27 Nxf7 Kxf7 28 Qh5+ Kf8 29 Rxe6 Qd7 30 Qxh7 looks interesting - 30...Rd8 31 Rd6 Qxd6 32 Qg8+ Ke7 33 Qf7 mate. Probably not forced though.
Premium Chessgames Member
  OBIT: Treating this like an OTB position, 27. Nxf7 looks like a pretty good sac. After 27...Kxf7 28. Qh5+ my plans are: (a) 28...g6 29. Qxh7+ Bg7 30. Rxe6 (b) 28...Ke7 30. Bxe6 Qxe6 31. Qc5+ (c) 28...Kg8 29. Rxe6.

I can't say I see a forced win yet, but these lines all look very promising. So, I'm playing 27. Nxf7 and waiting to see what Black does.

Premium Chessgames Member
  dzechiel: White to move (27?). White is up a pawn. "Medium/Easy."

The knight sacrifice on f7 is the first thing that most players will consider in this position. I saw it too, but decided to see if I could come up with something a little less "obvious".

So, I started looking at moves like 27 Qf3 (on the rook) or 27 Qe4, but these moves granted black too much latitude in his reply. Yeah, the rook had to move, but it could go to e8 or f8 or even d8, and the lines started to branch early and often.

Finally I returned to my original thought and noticed the queen check on h5 in some variations. Armed with that knowledge, I decided to go for it:

27 Nxf7 Kxf7

I suppose black can refuse the knight, but then he's down two pawns and about to lose the e-pawn to make it three. Besides, the lines where black refuses the knight are no fun to look at.

28 Bxe6+ Kf8

Other lines look worse for black. On 28...Ke7 or 28...Ke8 white can always fall back on the discovered check 29 Bd5+ followed by 30 Bxa8.

29 Qh5

Threatens mate, often an effective way to panic an opponent. I'm not sure what black should do here. Both

29...Qc7 and

can be met with

30 Qxh7

threatening checks on f8 picking up the rook at the very least.

I'm pretty sure this is the right line, time to check and see how this played out.

Sep-15-10  LIFE Master AJ: 27.NxP/f7. (Long line, fairly linear.)
Sep-15-10  smalldreams: As usual, I see that Nxf7 forces the king around and gains two pawns, but I couldn't turn it into a real advantage after that. And looking at the game now it just seems it should have been so dang easy. :)
Sep-15-10  zooter: Missed it totally, didn't even saw Nxf7 as a candidate
Premium Chessgames Member
  Moonwalker: I gave up pretty early! Saw that 3 of black's 4 pieces are undefended and didn't know where to start to grab an advantage.. Didn't even consider the knight sac!
Premium Chessgames Member
  patzer2: The demolition 27. Nxf7! leads to a decisive attack on the helpless Black King position.

I managed to see the position up through 30. Qxh7 , but for some reason I gave up trying to calculate any further.

The threats of mate, discovered attack with check and a skewer combine to leave White in a hopeless position at that point (i.e. after 30. Qxh7 ).

I probably would have gone in for it in an OTB game, but I would have been calculating based on intuition. Now, after having it played it out with Fritz, and becoming a bit familiar with the possibilities, it looks a lot easier.

P.S.: Perhaps one reason our puzzles might be a bit more difficult this week is they are a tribute to the recent passing of this great Chess legend. Perhaps today's puzzle is also a reminder that what looks so easy and effortless for the master often hides a bit of complexity beneath the surface.

Premium Chessgames Member
  CHESSTTCAMPS: White to move, is up a doubled pawn in an opposite-colored bishops middlegame. Black's rook is on its original square and the knight is offside at b4, so the black king is underdefended and particularly vulnerable on the light squares. With white's forces ideally deployed for attack (the bishop and two major pieces pointed at e6), the position cries out for a knight sac at the traditional weak point f7.


Accepting leaves the king caught in a crossfire of Q&B on the light squares.

A) 27... Kxf7 28.Bxe6+ (Qh5+ Ke7 is less clear) Kf8 29.Qh5 Qc7 30.Qxh7 Rc8 31.Bc4! and black must give up the queen to stop 32.Qg8#

A.1) 28... Kg6 29.Qe4+ picks up the rook.

A.2) 28... Ke7/e8 29.Bd5+ Kd7 30.Bxa8 and the attack is ongoing.

A.3) 28... Qxe6 29.Qxe6+ Kf8 (Kg6 30.Qe4+) Qd6+ picks up the knight.

A.4) 29... Qe7 30.Qxh7 Qd6 (or Qc7) 31.Qg8+ Ke7 32.Qxa8 or 32.Bg4+ wins quickly

A.5) 29... g6 30.Qxh7 and black can't meet the dual threat of 31.Qf7# and 31.Qg8+.

B) 29...Qxd4 30.Qxe6 h6 31.Nd8+ Kh7 32.Qg8+ Kg6 33.Bf7+ Kg5 34.Ne6+ Kf5 35.Qh7#

C) 29...Qe7 (or d7) 30.Bxe6 Re8 31.Nd6+ Qxe6 32.Nxe8 Qxe2 33.Nxf6+ gxf6 34.Rxe2 is a simple win.

Most likely, the game went a few moves down the A-line before black threw in the towel.

Premium Chessgames Member
  macphearsome: I'm very glad to see this puzzle - it is my first success of the week.

My sacrifice sense was immediately tingling with Nxf7, but I knew that white would have to have a forcing move after Kxf7 Bxf7, and it took me a few moments to see Qh5+.

I am sure that I would have played this OTB, but then I usually err on the side of sacrificing so this puzzle was my style.

Premium Chessgames Member
  macphearsome: correction to my last post - Qh5 is not check. But, the spare pawn feels almost as good :)
Premium Chessgames Member
  CHESSTTCAMPS: Black prolonged the game more than I expected with the insubstantial 30...Nc2.
Premium Chessgames Member
  unferth: <CHESSTTCAMPS A) 27... Kxf7 28.Bxe6+ (Qh5+ Ke7 is less clear) Kf8 29.Qh5 Qc7 30.Qxh7 Rc8 31.Bc4! and black must give up the queen to stop 32.Qg8#>

31. Qg8+ Ke7 32. Bxc8 is even more brutal, I think.

Premium Chessgames Member
  M.Hassan: "medium/easy"- White to move 27.?
White is ahead by a pawn

The very useful Knight of the White stationed on e5 is an asset for White and IMO should make the right move before it is taken by Black Bishop and the right move is to sacrifice itself!

If Black King does not take this donation!,next move the Bishop on c4 will take the pawn on e6 providing support for the Knight and resulting 2 pawns casualty for Black, so 27.........Kxf7
The King can go to:
e8,e7,g6 and f8
The first 3 squares will cause checks by Bishop or the Queen thereby loosing thre Rook on a8. So best will be: 28.........Kf8
29.Qh5! threatening mate on f7
Black can do either g6 or Qc7
if 29.......g6
30.Qxh7 Be8
31.Qg8+ Ke7
if 29.......Qc7 or e7
30.Qxh7 Qf7
31.Qxh8+ Ke7
32.Bxf7+ Kxf7

And Black has become so week in material that can not win 1-0 Time to check
Slightly different!

Sep-15-10  kookoon: I saw the forced line until 30. Qxh7 because sacrificing in easy puzzles is usually the first thing everyone does, but didn't realized it would lead to such a huge trouble for black. Bent Larsen is so great, didn't knew he just died about a week ago.
Sep-15-10  VincentL: "Medium/Easy".

It has been a poor week for me so far. I certainly did not solve yesterday´s puzzle and on Monday I failed to deal with the best defence.

For today´s puzzle, the first candidate move that suggests itself to me is 27. Nf7. Let us look at possible continuations.

(a) 27..... Kxf7. Now I think it must be 28. Qh5+ g6 29. Qxh7+ Kf8 30. Bxe6. Now black will be mated or at least lose his rook. e.g 30... Qc7 31. Qh8+ Ke7 32. Qxa8.

Black could play 28....Kf8, but then 29. Bxe6 Qc7 30. Qxh7 leads to a similar position, and Qg8+ is also threatened.

(b) 27. Qe7 or Qxd4 Then 28. Bxe6 Kf8 29. Qh5 and the same threats as in (a) are looming.

I think these are the main lines.

Time to check.

Sep-15-10  VincentL: The win here seems much simpler than in yesterday´s puzzle. I would be confident in winning against Crafty from this position. By contrast yesterday I failed to beat Crafty even after several attempts.
Sep-15-10  SamAtoms1980: 27.Nxf7 could be found by the average anonymous user. The real problem is after 27....Kxf7 to find the best followup out of 28.Bxe6+, 28.Qh5+ or 28.Qxe6+. The last one doesn't do much, so I waffled between the other two and finally chose 28.Qh5+ Kf8 29.Bxe6 with a BRUTAL mating attack.

It's pretty much what's-your-pleasure after 30....Nc2. I picked 31.Re4.

Premium Chessgames Member
  Once: Knight school.

The scene: a tired and grungy classroom. Rows of wooden chairs and desks face forwards towards a blackboard. In the corner of the room is a battered suit of armour. Posters on the wall give useful advice like "f3 and c3, that's where I want to be" and "knights before bishops".

The teacher, Mr Jenkins, is standing by the blackboard. He is wearing scruffy black corduroy trousers (which are practically illegal for anyone other than teachers to wear) and a mothy tweed jacket with leather patches on the elbow. Nobody knows why teachers nearly always have leather patches on the elbows of their jackets. You might think it was because they are sex maniacs, but then you look at them and ... naah.

"Okay class. Today's lesson is about the middlegame. If you ever get to be a knight, what are you trying to achieve in the middlegame?"

"Me sir, me sir!" squeals Turner, his hand held high, as eager as ever to show off. Mr Jenkins ignores him.

"Er... to grab an outpost," said one.

"Very good. Grabbing an outpost is certainly one of the things that you need to do. Anything else?"

"Me sir! Me sir!"

"Let's see - we'll ask Smyth. What pearls of wisdom do you have for us today?"

Smyth stopped picking his nose. He looked to his shoes for inspiration. "I guess I'd be looking for pins and skewers, sir."

"Pins and skewers? Pins and skewers? Stupid boy! If you wanted pins and skewers you should be with the girls in the bishop class."

"Yes please! Can I go there now sir?"

"Sit down Smyth, you hopeless excuse for a page. How do you expect to graduate with dumb answers like that? Would anyone else like to enlighten us?"

"Me sir! Me sir!"

"Would it be a fork, sir?" asked Roland.

"Excellent!" said the teacher. "That's two very good answers - outposts and forks. Now, there's at least one more. Anyone?"

"Me sir! Me sir!"

The rest of the class looked down, trying desparately not to attract the teacher's attention. Meanwhile Turner was trying to hold his hand up so high that it looked as if he was going to burst a blood vessel.

Eventually the teacher gave in. "Okay, Turner, what's your answer?"

"I'd sacrifice myself on f2 and f7, sir!"

"Very good, Turner, very good," said the teacher.

"Smart ass," muttered Smyth under his breath.

Sep-15-10  David2009: Larsen vs F Kuijpers, 1967 White 27?

Bent Larsen Momorial Week continues. I have belatedly realised that Bent Larsen died last week (9 September) aged 75. Thus, is celebrating his life, rather than mourning his death. See the excellent collection of games by Dennis Monokroussos at

Today's puzzle is (I hope) easier than yesterday's (see Larsen vs B Ostenstad, 1985 and the post by <stormbringer> which I agree with). 27 Nxf7 Kxf7 28 Qh5+ should win: 28...g6 29 Qxh7+ Bg7 30 Rxe6 and if ...Qxe6 31 Bee6+ the Bg7 hangs. Time to check: ======
Yet again I have plucked defeat from the jaws of victory. After 27.Nxf7 Kxf7 28.Qh5+ loses Ke7 29.Rxe6+ Qxe6 30.Bxe6 Kxe6 and there is no way White can profit from the temporary disorganisation of Black's pieces.

Larsen's line is much better but Crafty End Game Trainer defends with 28...Kg6 29.Qe4+ Kh6 30.Qxa8 Nc2 31.Re4 Qa3 to reach

click for larger view

and a powerful counter-attack the exchange and three Pawns down. I have no time for more today.

Crafty link to the puzzle position:

click for larger view

(Larsen vs F Kuijpers 1967 27?) Beat Crafty from the puzzle position if you can!

Sep-15-10  nuwanda:

just by the way and totally off topic:

today start the womens world blitz championship 2010, could be fun to watch

i like the karpov-kramnik video on the homepage, where karpov, in a blitzgame, just barely moves...

Premium Chessgames Member
  agb2002: White is a pawn up.

Black threatens the pawn on d4.

White exerts a considerable pressure on e6 and the rook on a8 is defenseless. These details suggest 27.Nxf7:

A) 27... Kxf7 28.Bxe6+ Kf8 (28... Ke7(8) 29.Bd5+ and 30.Bxa8 + - [R+3P vs N]; 28... Kg6 29.Qe4+ and 30.Qxa8 + - [R+3P vs N]) 29.Qh5

A.1) 29... Qe7 30.Qxh7 Ke8 31.Qg8+ Qf8 32.Bc8+ Be7 33.Rxe7+ Kxe7 34.Qe6+ Kd8 35.Qd7#.

A.2) 29... Qc7 30.Qxh7

A.2.a) 30... Rb8 31.Bc4 Qxc4 32.bxc4 + - [Q+4P vs B+N].

A.2.b) 30... Rd8 31.Qg8+ Ke7 32.Bc4+ Be5 (32... Kd6(7) 33.Qe6#) 33.Rxe5+ Qxe5 34.Qf7+ Kd6 35.dxe5+ + - [Q+B+4P vs R+N].

A.3) 29... g6 30.Qxh7 with multiple threats: 31.Qf7#, 31.Qg8+ and 32.Qxa8, 31.Qxg6+, 31.Bc4 and 32.Qg8#, etc.

A.4) 29... Ke7 30.Bd5+ and 31.Bxa8 + -.

B) 27... Qxd4 28.Qxe6 Kf8 29.Nd6 + - [3P] and the double threat 30.Qe8+ Rxe8 31.Rxe8# and 30.Qg8#.

Premium Chessgames Member
  TheaN: Wednesday 15 September 2010


Target: 2:10;000
Taken: 1:58;905

Material: White up, doubled ♙

Candidates: Qf3, Qe4, Qh5, <[Nxf7]>

An imminent breakthrough on the e-file seals this game's fate:

<27.Nxf7! Kxf7> the alternatives do Black no good here really, still meeting Bxe6.

<28.Bxe6† Kf8> after either e-file square 29.Bd5† wins and after Kg6 Qe4† wins.

<29.Qh5 Qc7 30.Qxh7 > by the time we get here, White got three additional pawns for the piece, and the Black King ain't that healthy. With threats of Qh8†/g8†, a useless Black Knight and no initiative for Black, this is solved.

Premium Chessgames Member
  Aware: <nuwanda: i like the karpov-kramnik video on the homepage, where karpov, in a blitzgame, just barely moves...>

the clock toward himself, an irked Kramnik then moves the clock back to (what he thinks is) the original spot just before the game starts...

The position of the clock was bothering Karpov you can see him eying it before he finally takes action. He initially moves it toward himself but then moves it back pretty close to the original spot just closer to the board. Kramnik spots this out of the corner of his eye and immediately starts thinking "Am I going to let this old man punk me? Naw!" Then moves the clock closer to himself. Oh the mind games!

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