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Bent Larsen vs Joel Benjamin
Hastings (1987/88), Hastings ENG
King's Indian Defense: Fianchetto Variation. Larsen Defense (E62)  ·  1-0


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find similar games 2 more Larsen/Joel Benjamin games
sac: 45.Rxf7 PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
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Premium Chessgames Member
  agb2002: White has a bishop and a pawn for a knight.

White can start an attack the black king with 45.Rxf7 (45.Ra8+ Kh7 46.Rd7 Rxg2+ 47.Kxg2 Qe2+ seems to win for Black) 45... Kxf7 46.Qe5:

A) 46... Re6 47.Rd7+ and mate soon.

B) 46... Rf6 47.Rd7+ Kg8 48.Qxf6 wins.

C) 46... Rxg2+ 47.Rxg2 and the threat Rg7+ is decisive (47... Re4 48.Rg7+ Kf8 49.Qf6+ Ke8 50.Rg8+ Kd7 51.Rd8+ Kc7 52.Qd6+ and mate in three).

D) 46... Rg8 47.Rd7+ and mate next.

E) 46... Qh4 47.Rd7+ and mate in two.

Premium Chessgames Member
  patzer2: Count me among the crowd that picked the difficult win with 45. Qe5 +- (+3.89 @ 30 ply, Stockfish 8) for their Wednesday puzzle solution, but wished instead we had seen the stronger game line 45. Rxf7 Kxf7 46. Qe5 +- (+56.51 @ 30 ply, Stockfish 8).

Black's decisive mistake appears to be 35...Qh5 allowing 36. Rd3 +- (+2.12 @ 28 ply, Stockfish 8). Instead, 35...Ng4+ 36. Kg1 Qxe1+ (+0.92 @ 30 ply, Stockfish 8) puts up much more resistance and gives the second player practical drawing chances.

Earlier, instead of releasing the tension with 13...Bxf3 14. Qxh6 ⩲ to = (+0.26 @ 28 ply, Stockfish 8), I prefer maintaining it with 13...Nf6 = (0.06 @ 29 ply, Stockfish 8).

Feb-14-18  mriddle: I considered 45. Rxf7 Kxf7 46. Qe5, but went with 45. Qe5, thinking I saw a quicker path to a win that way. It looks like I missed a couple responses by black that could make things trickier though: 45... Rg7 and 45... Nd6 (with the possibility of following it up with 46. Rxd6 Rxg2+ 47. Kxg2 Qe2+ which I believe leads to a perpetual check)
Feb-14-18  saturn2: I found the game continuation.
Premium Chessgames Member
  mike1: If Larsen would have played the exchange sac straight away it would have been a most impressive start of a sequence I have seen for a long time. 41.R1d2 b5, 42.b3 43.Qa1 44.Rxf7 45.Qe5
Would have.. but no, did not Qe5 myself
Premium Chessgames Member
  cocker: I looked at the game line but didn't realise how strong it is. 46 Qh8 is just as good.
Premium Chessgames Member
  ajk68: I went with the follow up of Qh8. Not quite as smiting as Qe5, but still easily winning.
Premium Chessgames Member
  malt: Gone for 45.R:f7 K:f7 46.Qe5 R:g2+
(46...Re6 47.Rd7+ Ke8 48.Q:e6+) 47.R:g2 Re4 48.Rg7+ Kf8 49.Qf6+

Also 46.Qh8

Feb-14-18  mel gibson: Stockfish 8 agrees and says mate in 27.

45. Rxf7

(45. Rxf7 (♖a7xf7 ♔g8xf7 ♕a1-e5 ♖c4-d4 ♕e5xd4 ♕h5-h4 ♕d4-a7+ ♔f7-g8 ♕a7-a8+ ♔g8-h7 ♖d2-d7+ ♖g6-g7 ♖d7xg7+ ♔h7xg7 ♕a8xc6 ♕h4-f2 ♕c6xb5 ♔g7-g6 ♕b5-e8+ ♔g6-f6 ♕e8-e5+ ♔f6-g6 ♕e5-e6+ ♔g6-g7 b4-b5 h6-h5 ♕e6xf5 ♕f2xe3 ♕f5-e5+ ♕e3xe5 f4xe5 ♔g7-f7 b5-b6 ♔f7-e6 b6-b7 ♔e6xe5 b7-b8♕+ ♔e5-e6 a3-a4 h5-h4 a4-a5 ♔e6-e7 ♕b8-f4 ♔e7-d7 a5-a6 ♔d7-e7 a6-a7 ♔e7-e6 a7-a8♕ ♔e6-e7 ♕f4-e5+ ♔e7-f7 ♕a8-e8+) +M27/39 99)

Feb-14-18  Pasker: Missed Qe5. Quite moves are always hard.
Feb-14-18  DrGridlock: <agb2002> writes:

White can start an attack the black king with 45.Rxf7 (45.Ra8+ Kh7 46.Rd7 Rxg2+ 47.Kxg2 Qe2+ seems to win for Black)

In the 45 Ra8+ sideline, after 45 Kh7, 46 Rf8 is an improvement for White. Komodo rates it as +1.8 for White. Enough for the win, but not as clean a kill-shot as the game continuation.

Premium Chessgames Member
  Jimfromprovidence: Watch out for the trap after 45 Rxf7 Kxf7 46 Qe5 Rd4.

click for larger view

If 47 Rxd4?, then Rxg2+.

click for larger view

Premium Chessgames Member
  benveniste: Anyone else end up at ♖xf7, ♔xf7, ♕h8?
Feb-14-18  dfcx: Like others, I also went with 46.Qh8, which appears to be as good as Qe5.
Premium Chessgames Member
  paulalbert: I also went with 46 Qh8, after looking for a few seconds. Be curious to know from someone who has time to analyze or has an engine whether that is also good.
Feb-14-18  et1: I went to Dh8 but am not sure how does this should unfold to get a win. Does anyone has an evaluation on that line ? Thank you.
Feb-14-18  NBZ: The earlier part of the game is rather interesting. In an equal middlegame, Black makes all the running, and White just uses that energy against him.
Feb-14-18  WDenayer: I was also sure that 45.Qh8+ would win, but I couldn't work it out and asked for help (from Hiarcs 6 : -)). It seems that the move completely loses.
Feb-14-18  WDenayer: In fact, Black easily mates after 45.Qh8 +. Big blunder.
Feb-14-18  dumbgai: Qh8+ works if black responds Nxh8?? allowing Rd8 mate. However, Black can play Kxh8 instead and white has no way to mate and has lost his queen for nothing.
Premium Chessgames Member
  patzer2: <paulalbert> I requested the engine look at 46. Qh8 with the result at analysis of move 46.? showing it's a clear win for White.
Premium Chessgames Member
  morfishine: <Jimfromprovidence> but isn't <47.exd4> or even <47.Qxd4> a simple enough answer to 46...Rd4?

This leaves White up a minor + pawn

click for larger view

Feb-14-18  Joseph Blackcape: <benveniste: Anyone else end up at ♖xf7, ♔xf7, ♕h8?>

Yes! I somehow got into my head that Q to h8 is the key by leaving the black king completely at the mercy of the white queen and rook with his own defenders always that-one-move-too-far-away and worked from there. And looks like it is easy winning too.

Premium Chessgames Member
  Jimfromprovidence: <morf> <but isn't <47.exd4> or even <47.Qxd4> a simple enough answer to 46...Rd4?

This leaves White up a minor + pawn>

Of course, I was just pointing out the one bad capturing option of the three.

Premium Chessgames Member
  Del ToRo: What if: 44. Ra7-a8+ Nf7-d8 45. Ra8xd8+ Kg8-f7 46. Rd2-d7+ Kf7-e6 47. Qa1-e5++
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