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Martyn Kravtsiv vs Ding Liren
World Cup (2017) (rapid), Tbilisi GEO, rd 2, Sep-08
Nimzo-Indian Defense: Normal Variation. Gligoric System Exchange at c4 (E54)  ·  0-1

ANALYSIS [x]

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Kibitzer's Corner
Sep-08-17  happyjuggler0: Knight promotion checkmate in GM vs GM game!
Sep-08-17
Premium Chessgames Member
  An Englishman: Good Morning: An example of how an ending that's harder than it looks is even harder than that. Wish I still had that copy of Rook Endings by Levenfisch and Smyslov because it's not completely clear that the position after 87...a5 is completely won for Black; the player with the two pawn deficit can draw a surprising number of such endings.
Sep-08-17
Premium Chessgames Member
  norami: Amusing ending. I wonder if Kravtsiv thought he had a draw after his last move and then, all of a sudden, it's a Knight! It's checkmate!
Sep-08-17  Nerwal: <Rook Endings by Levenfisch and Smyslov because it's not completely clear that the position after 87...a5 is completely won for Black; the player with the two pawn deficit can draw a surprising number of such endings.>

It's quite clear it's a draw actually, but in the heat of the battle Kravtsiv forgot one draws those triangle positions by constantly attacking the b pawn from the side, ie 91. ♖c5! is thematic and correct and 91. ♖h6+?? is a huge blunder (Kasparian had studied all those positions back in 1946).

Sep-08-17  notyetagm: Game Collection: UNDERPROMOTION!

M Kravtsiv vs Ding Liren, 2017 110 Kc4-b3?? allows shocking underpromotion 110 ... a2-a1=N#!

Sep-08-17  notyetagm: M Kravtsiv vs Ding Liren, 2017

110 ♔c4-b3?? ?


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110 ... a2-a1=♘#!


click for larger view

Sep-09-17
Premium Chessgames Member
  An Englishman: Good Evening: Nice research, <Nerwal>. If I remember correctly, pawns on a5 and b6 usually win more easily than a5 and b5 because the King has a hiding place on a6. The point? Advancing first the a-pawn to a4 and then then the b-pawn to b5 preserves the King's shield from side checks.
Sep-09-17  Nerwal: <If I remember correctly, pawns on a5 and b6 usually win more easily than a5 and b5 because the King has a hiding place on a6. The point? Advancing first the a-pawn to a4 and then then the b-pawn to b5 preserves the King's shield from side checks.>

Indeed, unless the white king can settle on b5. Pawns at a6 and b6 also win, because then there is enough room on the chessboard to play ♖b1 without being hit by ♔a2, followed by a5 and ♖b4(+).

Sep-09-17  parmetd: What a way to be knighted sir Ding.
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