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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
ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
May-16-18
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.

May-16-18
Premium Chessgames Member
  ChessHigherCat: Damn, I did missing something 32. e6 is much stronger. I thought my line looked suspiciously easy for a Wednesday.
May-16-18
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.
May-16-18
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.

May-16-18
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
Premium Chessgames Member
  takchess: Couldn't put it all together. Instructive Mate for me.
May-16-18
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.
May-16-18
Premium Chessgames Member
  chrisowen: Janet pe6in effects keyin keyon jinks linkins kh8in honklifts keyin links qd4in dinks linkins kg8in ghosthind links its for 33.Rf7 kestrel keyins finds mobyin keyin figlofts 13 coins keyin janet rasor brigs inius ntins netin tenon keyin keyon jetit vapour piano dints powin keyis wopin dowry keyins gyrate keyis racys mocks keyin hulked it's vasts hunts pawus leyline it's o;

keyon vasts punts haway keens yellow
keats wealth keyon keyin keyes punys walnut;

hypes aunty whelp wheat plyus nutus pe6us effects keyin janet dinks rasor brigs inius binds ntins netin tenon keyin keyon jetit vapour trail keats piano powin keyis wopin dowry keyins gyrate keyis racys mocks keyin hulked it's vasts hunts pawus leyline keyin links its a 31.e6 Kh8 32.Qxd4+ kestrel aints linch doddy keyin dinks binds dobin keyis dibon links keyin dilly dills lidin pe6us effects efforts effigys eminate keyon keyin keyes entropy yinus epicure equates keyin errands essayin entraps eunichs fiefdom fleece finish dinks flick fades doffs keyis diffs about 30...Kh8 deous longbid keysins keynubs honklifts keyis 5 6 coins keyin about 30...Qe7 deous longbid keysins eggshead keynubs 11 keyin doffs keyis diffs links its to 32...Kg8 33.Rf7 keyin tinks kestrel keyismobyin keyin figlofts 13 coins keyis cosys clomp bints keyin boots keytill keyis hohus boils keyin bibon clock crick keyin keyes umsus iotas jigon finds keyis finds keyin janet pe6in efforts;

May-16-18
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
Premium Chessgames Member
  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.

May-16-18
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.

May-16-18
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

May-16-18  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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