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Kantholi Rathnakaran vs Kalyan Arjun
15th Delhi International Cat: A (2017), Ludlow Castle Sports Complex , rd 3, Jan-10
Italian Game: Two Knights Defense. Modern Bishop's Opening (C55)  ·  1-0


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Kibitzer's Corner
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Premium Chessgames Member
  ChessHigherCat: Very Monday-ane/mundane unless I'm missing something. 31. Qxd4 and if Qxe5 32. Qxe5 and the rook can't recapture because of Rf8, mate. Or 31. Qxd4 Nc7 32. Qc4+ Kh8 33. Rf7 and the walls, come tumbling down...
Premium Chessgames Member
  Penguincw: I didn't get it. White is down a pawn in the initial position, so I just played 31.Qxd4 regaining that pawn.

Also knowing there's no 31...Qxe5 due to 32.Qxe5 Rxe5 33.Rf8# 1-0. I will probably disappear now for the rest of the week now.

Premium Chessgames Member
  ChessHigherCat: Damn, I did missing something 32. e6 is much stronger. I thought my line looked suspiciously easy for a Wednesday.
Premium Chessgames Member
  ChessHigherCat: I guess Kh8 is necessary because if Nc7 instead, for example, then Qf7 Kh8 Bg7#. Good puzzle, bad me!
May-16-18  nalinw: I got 31 e6 as the first move ... but didn't see Kh8 as a defense.
Premium Chessgames Member
  jith1207: Yes, good puzzle, bad impatience of me to figure out all refutations.
May-16-18  Patriot: I found 31.e6 pretty quickly after taking stock in the weaknesses. 31.Qxd4 seemed more of a distraction because everything is aimed toward f8. I only had problems in the mechanics of it, missing the obvious at first. So I made a move that doesn't address black's problems with 31...a5 32.Qf7+ Kh8 (32...Qxf7 33.exf7+ Kh8 34.fxe8/Q#) 33.Bg7# (the simple move I didn't see right away). 31...Qxe6 32.Qf8+ Rxf8 33.Rxf8#.

I feel pretty confident that I would see the tactical potential in this position OTB and not just because this is a "puzzle" and if given the time would seek out to reconcile all the weaknesses in black's position.

Premium Chessgames Member
  agb2002: White has a bishop for a knight and a pawn.

The e-pawn is untouchable due to Qf8+. This suggests 31.e6:

A) 31... Qxe6 32.Qf8+ Rxf8 33.Rxf8#.

B) 31... Rd8 32.Qf7+ Qxf7 (32... Kh8 33.Bg7#) 33.exf7+ Kh8 34.f8=Q(R)+ Rxf8 35.Rxf8#.

C) 31... Ne3 32.Qf7+ as in B.

D) 31... Nf6 32.Qxf6 Qxf6 (32... Qxe6 33.Qxe6+ and mate next) 33.Rxf6 and mate in three (33... d3 34.e7 dxc2 35.Rf8+ Rxf8 36.exf8=Q(R)#).

E) 31... Nc7 32.Qf7+ Qxf7 33.exf7+ Kh8 34.f8=Q(R)+ (or 34.fxe8=Q(R)+) and mate next.

F) 31... Qf6 32.Qxf6 Nxf6 33.Rxf6 transposes to D.

May-16-18  WorstPlayerEver: Consider 31. e6 but went for 31. Qxd4

I struggled with this line: 31. e6 Ne3 see <agb2002> comment.

May-16-18  Walter Glattke: White can even play 31.Qf3 Qe6!? 32.Qf8+ Rf8 33.Rxf8# or 31.-Nc7 32.Qb3+ Ne6 33.Rf6 b6 34.Qf3 a5 35.Rf7 Qd8 36.Qb7 a4 37.Rg7+ Kh8 38.Rxh7+ Kg8 39.Rg7+ Nxg7 40.Qxg7#, otherwise Rf8 Bxf8 with white advantage.
May-16-18  Walter Glattke: 31.Qf3 Ne3 32.Rf2 a5 (32.-Qxe6 33.Qf8+ Rxf8 33.Rxf8#) 33.e6 a4 34.Qe4 Qxe6 35.Qxd4 Qe7 36.Re2 wins.
May-16-18  WorstPlayerEver: <Walter Glattke>

31. Qf3 Ne3 32. Rf2 Nf5

May-16-18  takchess: Couldn't put it all together. Instructive Mate for me.
Premium Chessgames Member
  malt: Went for the obvious 31.Q:d4 Nc7 32.Qc4+ Ne6 33.Rf6 Qc5+

Then went for <31.e6> Nf6 32.Q:f6 Q:f6 33.R:f6 d3 34.e7 d2 35.Rf8+ R:f8 36.ef8/Q#

31...Kh8 32.Q:d4+ Nf6 33.R:f6 Kg8 34.Rf7 wins

May-16-18  njchess: 31. e6 ♔h8 (31. ... ♕xe6 32. ♕f8+ ♖xf8 33. ♖xf8++) 32. ♕xd4+ (Δ ♕g7++) ♔g8 ▢ 33. ♖f7 (again Δ ♕g7++) +-

31. ♕xd4 ♘c7 32. ♕xa7 ♕xe5 ∞
31. ♕xd4 ♘c7 32. ♕d6 ♘e6 ∓

May-16-18  FlashinthePan: I found it easily and saw 32. Qf7 Qxf7 33. exf7 Rf8 34. Bxf8 h5 35. Bg7+ Kh7 36. f8=Q g5 37. Qf7 h4 38. Bf8+ Kh8 39. Qg7#, which seems stronger than the game's 32.Qxd4+ Kg8 33.Rf7 as mate is forced.
May-16-18  Walter Glattke: Worst Player, White Advantage still after 21.Qf3 Ne3 32.Rf2 Nf5 33.Bc1 threatens g4 33.-Nh4!? 34.Qb3+ Kg7 35.Bg5 Qxg5 36.Qf7+ 33.-Qxe5!? 34.Qxb7 ...31.Qf3 seems to be better than 31.Qxd4 Qxe5 with no f7-attack then. Of Course, 31.e6 is move no,. 1, but 31.Qf3 seems to win, too.
Premium Chessgames Member
  patzer2: Couldn't find anything obvious to solve this Wednesday puzzle. However, if it were a real game I figured I'd play 31. e6 because it creates a lot of difficult threats for Black.

I had no ide3a it forced a quick mate. Lucky guess on my part.

May-16-18  cormier: 1) +0.08 (42 ply) 27...Nc8 28.e5 Ne7 29.Qe4 Qc6 30.Bd2 Qxe4 31.Rxe4 Kf7 32.Rxd4 Nf5 33.Rd7+ Re7 34.Rxe7+ Nxe7 35.Kf2 Ke6 36.Ke3 Kxe5 37.c4 Nf5+ 38.Kd3 Nh4 39.g3 Nf3 40.Bf4+ Kf5 41.b5 g5 42.Bb8 a6 43.bxa6 bxa6 44.g4+ Ke6 45.Ke4 Nd2+ 46.Kd4 Nb3+ 47.Kc3 Nc5 48.Ba7 Nd7 49.Be3 Ne5 50.Bxg5 Nxg4 51.Bf4 Kf5 52.Bb8 Ne5

25.0 minute analysis by Stockfish 9

May-16-18  JohnDMaster: I did solve this but I do not agree with the 2 stars,you have to play a quite move with the "what can black do" idea, I found that e6 created the most threats due to the huge dark square problem and the massive battery on the f file. It turns out there are no good moves for black so white wins!
May-16-18  Cheapo by the Dozen: The trick for me for solving this was to realize:

-- Black has as many defenders as White has attackers.

-- The only hope for changing this is to push the e-pawn.

Premium Chessgames Member
  Bubo bubo: White has a strong battery on the f-file supported by the bishop, but at the moment the invasion squares f7 and f8 are sufficiently defended. Hence he needs an additional attacker, and this can only be the e-pawn: 31.e6!, threatening 32.Qf7+ Qxf7 (32...Kh8 33.Bg7#) 33.exf7+

Black can neither remove the pawn (31...Qxe6 32.Qf8+ and mate) nor defend f7 once more; therefore he has no sufficient defence:

A) 31...Ra(b,c,d)8 is pointless: 32.Qf7+ Qxf7 33.exf7+ Kh8 34.f8Q+ and mate.

B) 31...N(Q)f6 32.Qxf6 Q(N)xf6 33.Rxf6, and Black cannot stop mate on f8, the e-pawn will again become the decisive third attacker.

C) 31...Kh8 32.Qxd4+ Kg8 (32...Nf6 33.Qxf6 as above) 33.Qxd5, and the threat of Rf7 is decisive.

Premium Chessgames Member
  Breunor: For some reason I saw this one - I'm not as strong as almost all of you, and Tuesdays can be tough for me, but this time I got it right away.

31 e6 appears to be the only winning move. According to silicon:

1) mated-in-10 (25 ply) 31...Kh8 32.Qxd4+ Kg8 33.Rf7 Qxf7 34.exf7+ Kxf7 35.Qxd5+ Re6 36.Bg5 b5 37.Qd7+ Kg8 38.Qxe6+ Kg7 39.Bf6+ Kf8 40.Qe7+ Kg8 41.Qg7#

31 Qd4 is good but not winning:

1) +0.93 (20 ply) 31...Nc7 32.Qxa7 Ne6 33.Qf2 Nd8 34.h3 Nc6 35.Re1 Qe6 36.Re4 Nd8 37.Qe3 Nf7 38.Bf4 Nd8 39.Kh2 Nc6 40.Bg3 Rf8 41.Qb3 Qxb3 42.cxb3

31 Qf3 doesn't work:
1) -0.24 (25 ply) 31...Ne3 32.Bxe3 dxe3 33.Qxe3 b6 34.Re1 Qe6 35.Qd4 Re7 36.c4 Rd7 37.Qe4 Kg7 38.Rf1 Rc7 39.Qa8 Rf7 40.Rxf7+ Qxf7 41.Qe4 Qe7 42.Qd5 a5 43.Qd4 Qc5 44.Qxc5 bxc5 45.Kf2 Kf7

Premium Chessgames Member
  landshark: <Flashinthepan> I avoided 32.Qf7 because of ... Rg8, which seemed less overwhelming as the game continuation.
May-18-18  FlashinthePan: <landshark> That's right, thanks, I missed it.
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