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Tarun Malhotra vs Tom C O'Neill
Hastings (2009/10), Hastings ENG, rd 4, Dec-31
Sicilian Defense: Najdorf. Zagreb (Fianchetto) Variation (B91)  ·  1-0

ANALYSIS [x]

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 2 OF 2 ·  Later Kibitzing>
Apr-17-19  Smothered Mate: I too got Ra8+ instead of Rc2+.
My engine indicates that Ra8+ mates one move faster than Rc2+.
Apr-17-19
Premium Chessgames Member
  FSR: I had the "approved" solution 31.Rc2+.
Apr-17-19  Stale.Mate: Wouldn’t 31.Qa6 work whether 31...Kb8 or Qb7? (Qb7–nice name for a book.)
Apr-17-19  sudoplatov: So after Qb7 the Queen may as well be on a bench?
Apr-17-19
Premium Chessgames Member
  agb2002: White has an extra pawn.

Black threatens Rxg3+.

The black queen is overburdened with the defense of a8 and c2. This suggests either Ra8+ or Rc2+.

In the case of 31.Ra8+:

A) 31... Qxa8 32.Rc2+

A.1) 32... Kb7 33.Rc7+ Kb8 34.Ba5+ Qb7 35.Qxb7#.

A.2) 32... Kb8 33.Ba7+ Kxa7 34.Rc7+ Qb7 35.Qxb7#.

B) 31... Kb7 32.Ra7+ Kb8 (32... Kc8 33.Qd7+ Kb8 34.Qc7#) 33.Bc5+ Kc8 34.Qd7+ Kb8 35.Qc7#.

-----

In the case of 31.Rc2+:

A) 31... Qxc2 32.Ra8+ Kb7 33.Ra7+ as in B above.

B) 31... Kb7 32.Bd4#.

C) 31... Kb8 32.Ra8+ Qxa8 (32...Kxa8 33.Qa6+ Kb8 34.Qa7#; 32... Kb7 33.Qa6#) 33.Ba7+ as in A.2 above.

Apr-17-19
Premium Chessgames Member
  drollere: i also went with Rc2+. in the game, this leads to a mournful finish:

34. .. Kc8
35. Qb7+ Kd8
36. Qxe7+ Kc8
37. Rc7+ Kb8
38. Ba7+ Ka8
39. Rxc2

Apr-17-19
Premium Chessgames Member
  drollere: i know, Qd7#. i couldn't resist.
Apr-17-19  Walter Glattke: White must play a move with check: If 31.Ra7 (threatens mate by Qd7+ Kb8 Qc8#), then 31.-Qe1+ 32.Rf1? Rxg3+ 33.hxg3 Qxg3# or 32.Kg2 Rxh2+ 33.Kf3 e4+ 34.Kf4 R8h4+ 35.g4 and black wins. If 31.Qa6+ Kd7 32.Qa7+ Ke8 33.Qa8+ Qxa8 34.Rxa8+ Kf7 35.Rxh8 Rxh8 36.Rc2 Rb8 37.a5 advantage for white.
Apr-17-19  Cheapo by the Dozen: There are many mating lines here, all based on the idea that both rooks threaten devastating checks; Black's queen is the only defense against either check, and hence is overloaded. I actually went with:

31 Ra8+ Kb7
32 Qa6+ Kc6
33 Bd8+, and mate quickly follows because that interference makes Qc8+ safe.

But the engine found a yet faster mate than that starting with 31 Ra8+, and of course the game line, starting with the other rook check, quickly mates as well.

Apr-17-19  saturn2: I started with Rc2 thinking the black queen at c2 can defend less than at a8.
Apr-17-19  Steve.Patzer: Stockfish prefers 1. Ra8+ mate in 5.
Apr-17-19  Nosnibor: I went along with stockfish.
Apr-17-19  karik: Ra8 #metoo.
Apr-17-19  malt: A case of which Rook to lure the Queen,
Rc2 or Ra8,
Gone for 31.Ra8+
Apr-17-19
Premium Chessgames Member
  whiteshark: Missing to find mates after both, 31.Ra8+ and 31.Rc2+, I also messed it up bigly with the simple-minded move <31.Ra7???>. Can you believe that?
Apr-17-19  ChessHigherCat: Nice Queen diversion: Big shopping spree on a8, get here while it lasts!

31. Ra8+ Qxa8 32. Rc2+ Kb7 33. Bd4#

Apr-17-19  ChessHigherCat: Mate-in-5??

Okay 31. Ra8+ Kb7 (discriminating shoppper) 32. Ra7+ Kb8 33. Bd4+ Kc8 34. Qd7+ Kb8 35. Qc7#

Apr-17-19  ChessHigherCat: You guys who look through the database for games to fit your puns should find a game where Tarun loses:

Sorry, got Tarun!

Apr-17-19
Premium Chessgames Member
  Diocletian: Easy. If I were giving a 100 board simultaneous rapid transit exhibition I would have played moves this easy 100 times. What day comes before Monday? Is there a more demanding game?
Apr-17-19  mel gibson: I checked it on Stockfish 10.
There are at least 3 winning moves for White.
Black is in a hopeless position.
Apr-17-19
Premium Chessgames Member
  Diocletian: Yeah, it looks to me like this daft game is busted. On now to quantum gravity. "I don't want to promote this @#$%*!& game." - Bobby Fischer

Hoping for a tougher puzzle tomorrow.

Apr-17-19  GlennOliver: 31. Ra7 loses the tempo and the game to 31. ... Rxg3+
Apr-17-19  patzer2: Today's Wednesday puzzle (31. ?) is a mating combination involving the pleasant choice between two Rook sacrifices leading to mate.

Both Rook sacs work. I picked 31. Ra8+ +- which forces mate-in-four (i.e. 31. Ra8+ Qxa8 32. Rc2+ Kb7 33. Ba5+ Ka7 34. Qb6# or 31...Kb7 32.Bc7+ Kxc7 33.Ra7+ Kc8 34.Qd7+ Kb8 35.Qc7#).

Apr-17-19  TheaN: Typically, this is a combo where both candidates work based on similar ideas but opposite access.

In concept, after 31.Ra8+ White sacs the a-Rook to open access to the c-file, whereas after 31.Rc2+ White sacs the f-Rook to open up the back rank.

The fastest is (and slightly more forcing) <31.Ra8+ Qxa8+ (Kb7 mates as fast after Ra7+) 32.Rc2+ Kb8 33.Ba7+ Kxa7 34.Rc7+ Qb7 35.Qxb7#>. Apparently 31.Rc2+ is a move slower; semantics really if time's not an issue.

Apr-17-19
Premium Chessgames Member
  perfidious: Embarras de richesse.
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