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Arnold Denker vs Mikhail Botvinnik
"The Golden Age of Radio" (game of the day Jan-28-2006)
USSR - USA Radio Match (1945), Moscow RUS and New York USA, rd 1, Sep-01
Semi-Slav Defense: Botvinnik System (D44)  ·  0-1
ANALYSIS [x]

FEN COPIED

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Given 20 times; par: 30 [what's this?]

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sac: 22...Rxh2+ PGN: download | view | print Help: general | java-troubleshooting

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Kibitzer's Corner
< Earlier Kibitzing  · PAGE 5 OF 5 ·  Later Kibitzing>
Jun-01-18
Premium Chessgames Member
  takchess: A small victory. Got the pawn move and the bishop check with the idea of rook attack on the H file. Didnt calculate some of the queen in between moves.
Jun-01-18
Premium Chessgames Member
  cormier: we can see that black is winning, the ...Rxh2 and the ...d3 are very vissible even at first sight, but there is 21.Be3 and a 22.Bh6 i think interposition that then would have made it a little harder
Jun-01-18  mel gibson: I knew the Black Bishop had to move to c5.
That was a check line.
Then the Rook could attack along the h file.

Stockfish 9 says:

19. f3 d3

(19. .. d3
(d4-d3 ♗g5-e3 ♗f8-c5 ♕b1-c1 d3-d2 ♕c1xd2 ♘d7-e5 ♕d2-f2 ♘e5-g4 ♗e3xc5 ♘g4xf2 ♗c5xf2 ♔c8-b8 b2-b3 ♕c6-d6 ♖f1-e1 ♕d6-f4 ♘g3-f1 ♔b8-a8 ♗f2-g3 ♕f4-d4+ ♔g1-h1 ♖h8-g8 ♘f1-e3 ♕d4xf6 ♘e3-g4 ♕f6-c3 ♖a1-c1 ♕c3-d2 ♖c1-b1 ♕d2-g5 ♖e1-e5 ♕g5-g6 ♖b1-e1 ♗b7-d5 ♗c4xd5+ ♖d8xd5 ♖e5-e4 a7-a5 ♘g4-e5 ♕g6-f6 ♘e5-c4 ♔a8-a7 ♗g3-f2+ ♔a7-a6) +2.81/33 50)

score for Black +2.81 depth 33

Jun-01-18
Premium Chessgames Member
  malt: 17.g3 is better than 17.Ng3?

20.Kh8 is another defence.

Jun-01-18  Walter Glattke: 23.Qf2?/23.Qe2? 23.Bxe6+ fxe6 24.Rac1 white wins
Jun-01-18  Walter Glattke: No, I am wrong with that.
Jun-01-18
Premium Chessgames Member
  mjmorri: Interesting to see the White light squared Bishop developed to e2 here, rather than the fianchetto setup.
Jun-01-18  Whitehat1963: As usual for Fridays, not even close.
Jun-01-18
Premium Chessgames Member
  cormier: Analysis by Houdini 4
26.Kh3 Qxc4 27.Rfd1 Qc2 28.Nf1 Qxb2 29.Rab1 Qe5 30.Rdc1 Qd4 31.Nd2 Bd5 32.Bg5 Kb7 33.Re1 Ba2 34.Be3 Qxf6 35.Bxc5 Qh6+ 36.Kg3 Qg5+ 37.Kh3 Bxb1 38.Bxb4 Qh6+ 39.Kg3 Bc2 40.Nc4 Qg5+ 41.Kh3 Bxa4 42.Bd2 Qc5 43.Re4 Bb5 44.Na5+ Ka6 45.Nb3 Qc2 46.Rb4 Bc6 47.Bg5 Bd5 48.Nd2 Qc5 49.Rb1 Ba2 50.Ra1 Qxg5 51.Rxa2+ Kb6 52.g3 Qg7 53.Kg2 -+ (-8.41) Depth: 24 dpa
Jun-01-18  dumbgai: This is a famous game and itís what inspired me to play the semi-Slav with black.
Jun-01-18  mel gibson: I used the Arena chess interface to try something interesting on my i7 quad core.
I gave the winning side - Black to the engine called SOS 5.1 which has a rating of 2500 - stronger than most chess players - and gave the losing side - White - the Stockfish 9 engine. Guess what?
SOS 5.1 played the correct first move but
Stockfish 9 won the game easily on 5 seconds per move at move 73. So it goes to prove that even though the text move is a winner & correct in theory a top player could not win against Stockfish 9 using it.
Jun-01-18
Premium Chessgames Member
  Once: Clever stuff. Black has pressure on the white kingside but his own Bf8 is in the way. There's the possibility of a rook reloader with Rxh2 followed by Rh8+ if only we could find somewhere to put the Bf8.

Botvinnik also spots that the Bc5-g1 diagonal is weak.

So he offers up the passed d pawn to allow him to play Bc5+ when all of black's advantages come to life. The passer is less important that the open lines against the white king.

Proves without a shadow of a doubt that I am no Botvinnik. I saw most of the combination and the thematic elements except the first move. Which is kinda important.

Jun-01-18  Pasker: d3 is the best move positional wise and doesn't look like a stunning tactic. Clearing the diagonal which leads straight to the enemy king is more important than a pawn or two if you'e already built enough to start attack. I saw d3 immediately.
Jun-01-18
Premium Chessgames Member
  chrisowen: Howls uvsus pd3us ducks keyin hoots qc1us clubs bc5us clucky lunks kh1us hunks lunks to it a 21.Be3 keyin aints hoods ebbus 1 2 it lowus luvus keyin hoots qd6us duffold lunks qf4us found lunks to it ha 22.Bh6 keyin hoots aints hutch keyin huffold 2 3 it lowus luvus keyin hoots rh2us hubus kh2us hucks lunksus rh8us hunkhoods lunks qh4us hound rh4us hogus bh4us hunts lunks to it frivs 25Qf4 finish dubus eggus clunge lunks flunk 7 wonus keyus keyin howls wolfs hogjump wrens keens henus jenny yinus yangs gasus gacks clams clumsy keyin bumus build mcsus mudus bidus dittoed it toyus keens keyus keyin yangs dints tinks foyus keyin frequency paved it's vasts tries keyin canus munch keyin hogged it's vasts keyin dinks tears nicks munch keyon keyin kinds dogus rematch keius chinny grind keyin charms ranch minds keyon keats kinds inara grand keyas chemist madus pd3us dunks keyin keyon kinds keyin howls hogjump wrens keens henus jenny yinus yangs keyin kissy lunks gacks inara keynub keats clang clams malls camus almus bumus lubbly inter jubbly keyin build mcsus budus bidus dittoed it toyus keens keyus keyin yinus yangs dints tinks foyus keyin frequecy paved it's vasts tries keyin canus munch keyin hogged it's vasts keyin dinks lunks its a diminishy 19d3 kestrel aints keyon goofs dints ducks blush botch keyin hubus bolshy lunks pd3us dubus ducks duffs dugus dutch docks dolls dulls donts doots doors dossy dumbs dowry woody would ducks duffs folds cuffs coffs doffs docks clung goods lunks hoots 20.Qc1 Bc5+ coins keyin clungs lunks to it a 21.Kh1 hoods hunks lunks to it a 21.Be3 keyin aints hoods ebbus keyvow 1 2 it lowus luvus keyin hoots lunks to it a 21...Qd6 22.Qf4 hutch keyin aints wolfs found lunks to it ha 22.Bh6 keyin hoots aints hutch keyin huffold 2 3 it lowus luvus keyin hoots lunks to it ha 22Rxh2+ keyin hoots aints keyin ciffy lunks to it hag 23.Kxh2 Rh8+ keyin hoots aints goods lunksus hoodwinks keyin lunks to it hags 24.Qh4 Rxh4+ keyin hoods keyus aints cuffs hotus goods lunks to it hagon 25.Bxh4 Qf4 keyin hoods aints goods doots cages found clunge lunks flunk 7 wonus keyus mobus bombs bumps bodys bolds moods mudus dobby burst keyus dates keyin affable faffs afford bores lakes folds bodys dints keyin hugus dizzy inara keyas yangs golds goods dossy dunks donts doors hooks rooks horror hoods hours ghost ghoul hoots goofs guffs fogus flung quoff dogon keyon keyin kinds umsus foods eggus focus affable panky flunk keyin howls pd3us ducks;
Jun-01-18
Premium Chessgames Member
  cormier: Analysis by Houdini 4
17.h3 Bh6 18.Rc1 Bxe4 19.Qxe4 Bxg5 20.Rxc4 Nxf6 21.Qf3 Rd5 22.Rd1 Kb8 23.Rxc5 Rxc5 24.dxc5 Bf4 25.Ba6 Be5 26.Rd2 Nd7 27.Rc2 Bd4 28.Qd3 Bxc5 29.Qb5+ Ka8 30.Qxb4 Bxb4 31.Rxc7 Nc5 32.Bc4 f5 33.Rf7 Rh4 34.b3 Kb8 35.f3 Bc3 - / + (-0.82) Depth: 22
Jun-01-18  RookFile: Natural talent vs. Professional player.
Jun-01-18  Walter Glattke: Stockfish plays 23.Qf2!? but one could try 23.Bxe6+ fxe6 24.Qe2 with 3 pawns for a bishop, seems to better.
Jun-01-18  JohnDMaster: Too easy since this a well- known game from the mighty Botvinnik.
Jun-01-18
Premium Chessgames Member
  cormier: Analysis by Houdini 4: d 20 dpa done

1. = / + (-0.46): 16.Qc2 b3 17.Qb1 Qc7 18.h3 Bh6 19.Qc1 Bxe4 20.Bxh6 Rdg8 21.Bg4 cxd4 22.Rd1 d3 23.Bf4 Qc6 24.f3 Bd5 25.Qe3 Qb6 26.Qxb6 axb6 27.a5 Nxf6 28.Be5 Rh6 29.Bf4 Rh7 30.axb6 Nxg4 31.hxg4 Kb7 32.Be3 e5 33.Ra7+

2. = / + (-0.61): 16.f3 Qc7 17.Qc1 Qxh2+ 18.Kf2 Bxe4 19.fxe4 Bh6 20.Bxh6 Nxf6 21.Bf3 Qxh6 22.Qxc4 Qd2+ 23.Kg1 Qxd4+ 24.Qxd4 Rxd4 25.Rac1 Nd7 26.Be2 f6 27.Bb5 Rh5 28.Rfd1 Rxd1+ 29.Rxd1 Nf8 30.Kf2 Kc7 31.b3 Rh7 32.Ke3 Rg7 33.Rf1 Rg3+ 34.Rf3 Rxf3+ 35.gxf3 Kd6 36.Bc4 Ng6 37.f4 a5

Jun-01-18  The17thPawn: Haven't figured out the mating net after 22.BF4,Rxh2+ but there has to be something with all the activity around blacks king.
Jun-01-18
Premium Chessgames Member
  ChessHigherCat: The17thPawn: Haven't figured out the mating net after 22.BF4,Rxh2+ but there has to be something with all the activity around blacks king

It's true that the seemingly pointless sacrifice Nh5 creates luft on g3, but the castle is a bit too air-conditioned for safety:

1) -10.33 (24 ply) 22...Rxh2+ 23.Kxh2 Rh8+ 24.Nh5 Rxh5+ 25.Kg3 e5 26.Be6 Qxe6 27.Bg5 Qf5 28.Bh4 Kb8 29.Qc4 Nxf6 30.Rac1 d2 31.Bxf6 Qxf6 32.Qg4 Rg5 33.Rc4 e4 34.Rxc5 Qd6+ 35.f4 Rxg4+ 36.Kxg4 Qxc5

Jun-01-18
Premium Chessgames Member
  cormier: Analysis by Houdini 4: d 25 dpa done

<1. = (-0.09): 14.Bf3> Ne5 15.dxe5 Rxd1 16.Rfxd1 a6 17.Ne4 c5 18.g3 Bd5 19.Bf4 Qc6 20.Re1 Kb7 21.h4 Kb6 22.Rad1 b4 23.Kg2 a5 24.Re3 Qd7 25.Ree1 Qb7 26.Re3 Qd7 27.Ree1

2. = / + (-0.30): 14.b3 b4 15.Na4 Qc7 16.h4 c3 17.a3 c5 18.axb4 Bh6 19.f4 Bxg5 20.hxg5 cxb4 21.Bf3 Rh4 22.Bxb7+ Qxb7 23.Qf3 Qxf3 24.Rxf3 Kb7 25.Kf2 Rdh8 26.Ke3 Rh1 27.Rff1 Rxf1 28.Rxf1 Kc6 29.Kd3 Kd5 30.f5 Rh4 31.Nxc3+ bxc3 32.fxe6 Kxe6 33.Re1+ Kd6 34.Re7 Rg4 35.Rxf7 Rxg5 36.Kxc3 Rxg2 37.Rg7

Jun-02-18  The17thPawn: <ChessHigherCat> Thanks for the reply. But given the 14 move variation for white you provided,I'm not surprised I didn't see it.
Jun-02-18
Premium Chessgames Member
  ChessHigherCat: You and me both, brother, courtesy of StockFish the (quasi) Omniscient
Jun-04-18
Premium Chessgames Member
  keypusher: <Walter Glattke: Stockfish plays 23.Qf2!? but one could try 23.Bxe6+ fxe6 24.Qe2 with 3 pawns for a bishop, seems to better.>

It isn't better. It's worse. 24....Ba6. Black can also play 23....Kb8!, which is even better than taking the bishop immediately: 24.Qe2 Ba6, or 24.Qf2 Nd3 25.Qe2 Qb6.

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