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Alexander Grischuk vs Wesley So
Your Next Move (Rapid) (2018), Leuven BEL, rd 5, Jun-13
Spanish Game: Berlin Defense (C65)  ·  0-1
ANALYSIS [x]

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Kibitzer's Corner
Jun-13-18
Premium Chessgames Member
  lost in space: scrambled egg 3?
Jun-13-18  JPi: Seeing position the position at move 30 the question is how White could lost his way. Indeed space for mistake is wide.
Jun-13-18
Premium Chessgames Member
  ChessHigherCat: Hi <JPi>. 29 Qg4 is almost forced and StockFish says it's a draw (=0.00), but it can't be good for white to go into a king and pawns endgame with 2 sets of doubled pawns, right?
Jun-14-18  WorstPlayerEver: Today players are much better.
Jun-14-18
Premium Chessgames Member
  tpstar: For endgames where both sides Queen, having the first check is critical. After 45 ... d1=Q 46. f8=Q:


click for larger view

46 ... Qd5+ & 47 ... Kxb4 might have worked just as well, but Black checked until 52 ... Qe5+ 53. Kg6 and only then 53 ... Kxb4 where White's King is exposed while White's Queen has no checks. Had White tried 54. Qc8 then 54 ... Qe7 protects the Pb7, followed by 55 ... Kxc5, or 55. Qf5 Qxc5. The game continuation led to 61 ... Qe5+ winning the Pc5 with check due to 62. Kd8/Kd7 63. Qd5+ trading down to a won K&P ending.

Jun-14-18  Whitehat1963: Impressive game from So.
Jun-14-18
Premium Chessgames Member
  patzer2: Our Stockfish 9 application indicates 34. f4 = (0.00 @ 26 ply analysis of move 34.?) would have improved over the game move 34. Ke3? Kxf5 ⩱ (-0.40 @ 22 ply analysis of move 34...?).
Jun-14-18  WorstPlayerEver: <patzer2>

You don't say. Drawn endgame is drawn :)

Jun-14-18
Premium Chessgames Member
  patzer2: <WorstPlayerEver> I set it up (i.e. 34. ?) as a puzzle position for my two Grandsons, ages 12 and 9 who are active scholastic tournament players.

They found the positions after 34. f4 to be quite instructive and entertaining. Some of the follow-up they found to be a bit tricky and difficult. All three of us learned something new about King and Pawn endgames after studying it this morning.

Jun-14-18  WorstPlayerEver: <patzer2>

Grischuk probably mixed up the idea of 'King opposition (Kf3/Kf5) with 'King activity.' f2-f4 simply stops g7-g5.

Jun-14-18
Premium Chessgames Member
  patzer2: After 34.f4 Kxf5 35.Kf3 h4 36.a3 a6 37.a4 a5 38.bxa5 g6 39.a6 bxa6 40.a5 g5, the position gets a bit tricky.

If now 41. fxg5??, Black wins with 41...Kxg5 -+.

Instead, 41.g4+! hxg3 42.fxg5 Kxg5 43.Kxg3 = holds the draw as in the Stockfish 9 analysis for 34. f4 posted above.

Jun-14-18  WorstPlayerEver: 34. f4 Kxf5 35. Kf3 h4 36. a3 a6 37. a4 a5 38. bxa5 g6 39. a6 bxa6 40. a5 g5 41. g4+ Kf6 42. f5 Ke5


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What now?

Jun-14-18
Premium Chessgames Member
  patzer2: Our Stockfish 9 application's analysis of move 43.? gives 43.Kg2 Kf6 44.Kh2 Kf7 45.Kg2 Ke8 46.Kh2 Kf8 47.Kg2 Kf7 48.Kh3 Ke7 49.Kg2 Kf7 = (0.00 @ 48 ply).
Jun-14-18
Premium Chessgames Member
  patzer2: A news article at https://en.chessbase.com/post/grand... mentions that Grischuk missed the draw with 34. Ke3? instead of 34. f4 =.
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