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John D Carlin vs Nicholas Pert
London League (2011), ?, rd 3, Sep-??
French Defense: Winawer. Poisoned Pawn Variation Main Line (C18)  ·  0-1



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Kibitzer's Corner
Premium Chessgames Member
  FSR: 27...Rxg3+ 28.hxg3 Qxg3+ is crushing: 29.Kh1 Rh8+; 29.Kf1 Rg8 or Rh8; 29.Rg2 Qe1+ 30.Kh2 Rh8#.
Premium Chessgames Member
  uniqueid: It seems like the game move 28. Rh8 is the key move securing win for black. <FSR> 29.Rg2 Qe1+ and 30. Bh1 instead of 30. Kh2, saves the game for white (even with the e-pawn marching down). The Stockfish analysis shows draw after 30. Kh2

<> pretty awesome that you've made the engine analysis dynamically linked to the game analysis. Thank you!

Oct-05-17  raviarun: Better response to 29.kf1 is ...Qf1+. Followed by 30.Ke1 Qh1#, or 30.Kg1 Rg8+
31.Kh2 Qh5# or 31.Rg2 Qg2#
Oct-05-17  raviarun: I missed Bf1 defence too. Thanks <uniqueid>
Premium Chessgames Member
  FSR: <uniqueid> You're right - in my zeal to be first, my analysis left something to be desired.
Oct-05-17  lost in space: What a wonderful pawn on e3, not allowing Kf2. And how good it is to Black, this pawn c2, not allowing a coordination of Queen and rook on the second rank.

27...Rxg3+ 28. hxg3 Rh8! 29. Rg2 Qh5! and no way to protect whites king from mate

Premium Chessgames Member
  WorstPlayerEver: Ghe after a few seconds I thought: why grabbing that useless pawn? I am not some totally senseless materialistic guy. Yay!
Oct-05-17  Walter Glattke: 28.-Rh8?? 29.Kf1 Qh5 30.Ke1 Qh1+ 31.Ke2
Qxg2+ 32.Kxe3 -+. but 28.-Qxg3+ 29.Kh1 Rh8# or 29.Kf1 Rh8 30.Rg2 Rh1+ 31.Ke2 Re1#
Premium Chessgames Member
  piltdown man: That was a pert pair of moves.
Oct-05-17  saturn2: After 27...Rxg3 28 hxR black has the open h file, the pawn e3 and queen plus rook to attack the king. It should be enough.
Premium Chessgames Member
  Richard Taylor: I have to be honest I failed to find the correct solution finding a "brilliant" solution that fails in the end...But the game continuation leads to a beautiful mate.

So I will now done sackcloth and ashes and torment myself for 40 days...

Very instructive indeed!

Premium Chessgames Member
  Richard Taylor: In fact I went for <FSR>'s line and had the pawn on e2 about to cause mate forgetting that the Q on b5 could take it...but every other move wins for Black!

Oh well, it is so easy to miscalculate such things and Rh8 is very powerful, leaving no ragged ends...

Premium Chessgames Member
  WorstPlayerEver: Ghehe well.. I forgive you guys. It's still mind over matter.
Premium Chessgames Member
  patzer2: Looking at it from the White side I had difficulty with today's Thursday puzzle (27...?,) as I kept wanting to force things with 27...Rxg3+ 28. Rxg3 hxg3 Qxg3?

Unfortunately, this fizzles out to a level position after 28...Qxg3+ 29.Rg2 Qe1+ 30.Bf1 e2 31.Rxe2 Qg3+ 32.Rg2 Qe3+ 33.Kh1 Rh8+ 34.Rh2 Qf3+ 35.Kg1 Rxh2 36.Kxh2 Qxf1 = (0.00 @ 43 depth, Stockfish 8.)

So I decided to flip the board and looked at it from the Black side and after 27...Rxg3+ 28. Rxg3 (diagram below)

click for larger view

the winning follow-up move 28...Rh8! -+ became clearly obvious. This forces mate after the game continuation or 28...Rh8! 29. Rh2 Qxg3+ 30. Rg2 Qe1+31. Bf1 Qh5 (diagram below.)

click for larger view

Here (diagram above,) White only has silly spite check piece sacs to delay mate-in-one.

P.S.: White's game starts to go bad with 21. Bxd3? exd3 ∓ (-0.98 @ 30 depth, Stockfish 8.) Instead, the defensive maneuver 21. Rf2 Ng4 22. Re2 Qe7 23. Nf1 Qh4 24. g3 Ke1 = (0.00 @ 33 depth, Stockfish 8) holds it level.

White's game goes from bad to worse with 22. Rbe1? Nd4 -+ (-2.33 @ 31 depth, Stockfish 8.) Instead, 22. Qc4 Qe7 23. Rfe1 ⩱ (-0.52 @ 31 depth, Stockfish 8) gives White a fighting to survive.

Premium Chessgames Member
  morfishine: Black played all the Pertinent moves


Oct-05-17  mel gibson: Move
24. K x B

is already mate in 16:

24. Kxg2 Qb7+ (24. .. Qc6+
(♕c7-c6+ ♔g2-g1 ♘d4-f3+ ♖f1xf3 ♕c6xf3 c2-c3 ♖g8xg3+) +M16/13 73)

score for Black - mate in 16

Premium Chessgames Member
  Sally Simpson: Got it (insert smug smiley.)

'cept here.

click for larger view

I threw in 29.Qd1+ Bf1 and then 30 Qh5. which does mate.

29.Qd1+ was played forcing 29...Bf1 to stop 30...Kf1 after 30.Qh5 as position appeared:

click for larger view

I realised 30...Kf1 31.Qd1 mate.

But keep smug smiley. Did not botch it just over elaborated a little and again blaming solving upside down with Black to play.

Oct-05-17  Lambda: I saw 28...Qxg3+ 29.Rg2 Qe1+ 30.Bf1 e2 31.Rxe2 Qg3+ 32.Rg2 Qe3+ but thought it was winning, somehow missing the fact that the king can go to the h-file on h1 and then the rook can cover it on h2.
Premium Chessgames Member
  WorstPlayerEver: ( ͡ ͜ʖ ͡)
Premium Chessgames Member
  Sally Simpson: Thanks W.P.E. that will be my smug smiley.
Oct-05-17  Cheapo by the Dozen: I hallucinated about:

29 ... Qd1+
30 Bf1 e2
31 Rxe2 Rh1+

But on review, I don't think that really works (and may not work against 31 Rf2 either).

Oct-05-17  Cheapo by the Dozen: By the way, the problem with

28 ... Qxg3+
29 Rg7 Qe1+
30 Bf1 Rd1

is that White has too many attacking chances of his own. There's no way Black can win at this point with a non-forcing line.

Premium Chessgames Member
  kevin86: No escape without loss of the rook.
Oct-05-17  SuperPatzer77: <patzer2> <...the winning follow-up move 28...Rh8! -+ became clearly obvious. This forces mate after the game continuation or 28...Rh8! 29. Rh2 Qxg3+ 30. Rg2 Qe1+31. Bf1 Qh5 (diagram below)...>

You mistyped 31...Qh5 - it should be 31...Qh4 but I saw your correct diagram.


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