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Francisco Montoliu Cervero vs Povilas Lasinskas
Mislata op 43rd (2009), Mislata ESP, rd 6, Aug-28
Philidor Defense: Hanham. Krause Variation (C41)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
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Jun-15-16  stst: Two main lines following
16.RxN (guarding Qd7+)

(A)
16...........BxR (quite natural, but may opt not to)
17.Qd7+ Kf8
18.Bh6+
(i)...... Bg7, 19.Qxg7+ Ke8, 20.Qd7#
(ii).......Kg8, 19.Qe8#

(B)
16.......... not taking the "bait", opt for other defense, e.g. Qd6 (tries to exchange Q-off) 17.Qh5+ Nf7
18.Qxf7+ Kd8
19.Bg5 BxR (no other good moves)
20.Rd1 (pinning the Q) QxR
21.NxQ BxB
22.Qd7#

Jun-15-16
Premium Chessgames Member
  agb2002: White has two pawns for a knight.

Black threatens 16... Nxe6.

The best defender is the knight on f6. Therefore, 16.Rxf6:

A) 16... Bxf6 17.Qd7+ Kf8 18.Bh6+ Bg7 (18... Kg8 19.Qe8#) 19.Qxg7+ Ke8 20.Qd7#.

B) 16... h5 17.Qd7#.

C) 16... Qc7(8) 17.Qh5+ Nf7 18.Rxf7 + - [N+2P] and a winning attack.

D) 16... Bc5+ 17.Kh1

D.1) 17... Qd6 18.Qh5+ Ke7 (18... Nf7 19.exf7+ wins) 19.Rf7+ Nxf7 (19... Kxe6 20.Qf5#; 19... Ke8 20.Rd7+ andmate soon) 20.Qxf7+ Kd8 21.Bg5+ (21.Qf6+ Kc7) 21... Kc8 22.e7 wins.

D.2) 17... Ke7 18.Rf7+ Nxf7 (18... Kxe6(e8) 19.Qd7#) 19.Qd7+ Kf6(8) 20.Qxf7#.

E) 16... Nxe6 17.Rxe6 + - [N+P].

Jun-15-16
Premium Chessgames Member
  patzer2: In this Philidor defense game, White's 8. Bxf7+! is an interesting and fun demolition sacrfice.

With perfect play, the computers indicate White has no more than equality. However, the expert playing the 8. Bxf7+ sacrifice in this game found that even a master would have difficulty finding the perfect defense.

The all seeing eye of the computer prefers 8. a4 . However,I like the human fun of testing the abilities and nerves of a master with the excitement of 8. Bxf7+!?

Jun-15-16  AlicesKnight: 16.Rxf6 is interesting; the main attraction is ...Bxf6; 17.Qd7+ Kf8; 18.Bh6+ driving the BK and clearing the line for the other White R if needed after 18.... Bg7; 19.Rf1+ etc. 16...Qd6 loses a piece after 17.Qh5+ forcing ....Nf7. What happened? - yay, got it....
Jun-15-16  YouRang: Fairly easy.


click for larger view

The white Q would love to play Qd7+ followed by Bh6+, and the only thing standing in the way is Nf6 which guards d7.

Conveniently, white's Rf1 is there to remove the obstacle: <16.Rxf6>


click for larger view

Technically, the rook is immune because (as the game proves) taking it leads to quick mate: <16...Bxf6 17.Qd7+ Kf8 18.Bh6+ Bg7 19.Qxg7+ Ke8 20.Qd7#> (Black took a shortcut with 18...Kg8 19.Qe8#).

But realistically, black's other choices at move 16 are hopeless anyway. Black just loses a key defensive piece, and very shortly white's DSB will come out followed by the Ra1, and all of white's pieces will be chasing black's naked king around the board.

Jun-15-16
Premium Chessgames Member
  perfidious: This heah so-lution is sumpin even Ah seen in a nannysecond!
Jun-15-16  Doniez: Easier then yesterday
Jun-15-16  gofer: But the rook is immune!

<16 Rxf6 ...>

White threatens Qd7#.

16 ... Rf8/Rf8/h5
17 Qd7#

But the rook is immune!

16 ... Bxf6
17 Qd7+ Kf8
18 Bh6+ Kg8
19 Qe8#

Knight moves are equally bad.

16 ... Nf7
17 Qd7+ Kf8
18 Rf7+ Kg8
19 Qe7 mating

Going a whole piece down seems a miserable decision! But actually may be better than the choices below!

16 ... Nxe6
17 Rxe6

So, if we don't want to go a whole piece down immediately, then moving the queen is the only real choice, but the obvious try loses the queen in just three moves!

16 ... Qd6
17 Qh5+ Nf7
18 exf7+ Kd8 (Kf8 Bh6#)
19 Rxd6+

So perhaps we can try the other queen move...

<16 ... Qc7>
<17 Qh5+ Nf7>
<18 Rxf7! ...>

White threatens 19 Rf8++ Kxf8 20 Qf7#, so the king must move!

<18 ... Kd8>
<19 Rxe7+ Kxe7>
<20 Bg5+ ...>

The king hunt starts and the rest is just fun!


click for larger view

Jun-15-16
Premium Chessgames Member
  WorstPlayerEver: 5 seconds. My record.
Jun-15-16  leRevenant: A case of the cheeky young unknown underdog springing a surprise by thrashing the established player.
Jun-15-16
Premium Chessgames Member
  morfishine: Sweet: <16.Rxf6> standard removal of the guard (d7) 16...exf6 17.Qd7+ Kf8 18.Bh6+ Kg8 19.Qe8#

*****

Jun-15-16  1.e4effort: Monday, maybe Tuesday level. Why? Because I solved it in just a few seconds
Jun-15-16  zb2cr: 16. Rxf6 initiates a brief King hunt if Black recaptures. Black should refuse the Rook, since the material is then equal, but I can't find a decent defense. 16. ... Qd6 doesn't work, see lines by <stst> and <gofer>,
Jun-15-16
Premium Chessgames Member
  Once: Interesting that white concludes the attack with a queen and bishop that hadn't moved from their home squares. And initiated the attack with a rook that had done nothing else in this world except get itself castled.

Who needs to develop pieces when you have such strong open lines?

Jun-15-16  Cheapo by the Dozen: I got a little sloppy and forgot that the d8 knight defends f7. But basically this was a pretty easy problem, just as the caption said.
Jun-15-16  Carlos0012358: Major Black blunder 16....Bxf6!!! Instead, 16....Bc5 extends the game, although Black will remain in the defensive and eventually White can promote a pawn and win. Nice puzzle.
Jun-15-16  Carlos0012358: After consulting Stockfish, 16....Nxe6 not as effective as 16....Bc5, although both eventually lead to the same ending.
Jun-15-16  BOSTER: " Who needs to develop pieces when you have such strong open lines?". Black needs.
Jun-15-16
Premium Chessgames Member
  Longview: Typical of myself, I find the first components and then miss the end. i saw to remove the guard with a rook sac, but I was trying to get the Queen to h5 not noticing the d8 Knight was guarding the f7 square which is required to box in the King. Is that RORGFWR? Removal of the right guard for the wrong reason?
Jun-15-16
Premium Chessgames Member
  I Think Not: I who seldom solve any puzzle solved this one in a minute. I think because there has been so much carping about the POTD the past ten days, Chessgames threw us seals a fish. Just thinkin'.
Jun-15-16
Premium Chessgames Member
  morfishine: <I Think Not> I agree, except the part about being a seal, since nobody, at least recently, has thrown me a fish
Jun-15-16  YouRang: <I Think Not: I who seldom solve any puzzle solved this one in a minute. I think because there has been so much carping about the POTD the past ten days, Chessgames threw us seals a fish. Just thinkin'.>

Perhaps so. Recently, we've been baited into chasing red herring puzzles, and of course floundering. A real fine kettle of fish!

Jun-15-16
Premium Chessgames Member
  Sally Simpson: looks like this thread is the plaice to unload our puns.

Black played like a fish out of water and got hooked.

Jun-15-16  zanzibar: This is getting rather fishy, think I'll just cut bait and run...

https://en.wikipedia.org/wiki/Fish_...

Jun-16-16
Premium Chessgames Member
  kevin86: the key: remove the defender that keeps out the queen. Mate follows in four moves.
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