[Event "40th TCh-IND 2020"]
[Site "Ahmedabad IND"]
[Date "2020.02.10"]
[Round "5.1"]
[White "Gupta, Ab"]
[Black "Puranik, A."]
[Result "1-0"]
[ECO "D90"]
[WhiteElo "2608"]
[BlackElo "2597"]
[Annotator "Yip"]
[PlyCount "77"]
[EventDate "2020.02.07"]
[EventType "team"]
[EventRounds "9"]
[EventCountry "IND"]
[SourceTitle "TWIC 1318"]
[Source "Mark Crowther"]
[SourceDate "2020.02.10"]
[SourceVersion "2"]
[SourceVersionDate "2020.02.11"]
[SourceQuality "2"]
[WhiteTeam "Petroleum SPB"]
[BlackTeam "Airports Authority of India"]
{[%evp 0,77,19,15,15,-7,44,44,65,44,67,17,8,-27,-2,-10,-10,-10,-10,-10,49,45,
28,43,40,40,34,9,9,9,0,-33,-10,3,12,-34,0,0,0,-16,0,0,0,0,0,-26,0,0,-34,-23,71,
-26,-26,-18,-22,-22,-31,-36,-44,-47,-3,-19,-17,-1,20,34,23,-20,0,0,0,0,77,138,
166,193,205,224,224,166] -The Safest Grunfeld Reloaded(Chess Stars 2019)} 1. d4
Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. h4 c6 {is one of two lines recommended by
Delchev} (5... dxc4 6. e4 c5 7. d5 b5 8. h5 {etc is the other line recommended
by Delchev}) 6. Bg5 O-O 7. Bxf6 Bxf6 {} 8. e3 {Is not mentioned by
Delchev} (8. h5 g5 9. h6 g4 10. Ne5 dxc4 11. Rh5 Bxe5 12. Rxe5 f6 13. Rh5
Kh8 {[Delchev]}) 8... dxc4 (8... h6 {with the idea of} 9. h5 g5
{Closing the kingside can be considered} 10. Qc2 Bg7 11. O-O-O Be6 12. Nd2 a5
$13) ({Predecessor:} 8... h5 9. Qc2 (9. Qb3) 9... Kg7 10. O-O-O Qa5 11.
Be2 Na6 12. a3 dxc4 13. Nd2 b5 14. g4 hxg4 {0-1 (28) Mirzoev,E (2478)-Delchev,
A (2564) Anogia 2019}) (8... Bg4 9. cxd5 cxd5 10. Qb3 Nc6 11. Qxd5 e5 {
Is combative and chaotic but White has an extra P to work with}) 9. Bxc4 {
Focusing on development is simple and logical} (9. h5 {Invites immediate
complications} Be6 10. e4 (10. Be2)) 9... c5 {Central counterplay is
logical but White can press energetically after} (9... h5 10. Ng5 (
10. Qb3 Nd7 11. Ng5 e6 12. O-O-O Qe7) 10... Kg7 11. Nce4 Qa5+ 12. Kf1 Na6
$13) 10. Ne4 (10. h5 {Is far less clear} cxd4 11. hxg6 hxg6 12. exd4 Kg7
) 10... cxd4 (10... Nc6 11. Nxf6+ exf6) 11. Nxf6+ ({Much weaker is} 11.
exd4 Bg7) 11... exf6 12. Nxd4 {White has a slight lead in development
but remains uncastled. Every tempo counts as the position is open and sharp}
Qb6 {...Qb4+ is the strong threat.} (12... Bd7 {Focusing on development seems
fine for Black} 13. Rc1 (13. O-O) 13... Nc6 14. h5 Qa5+ 15. Kf1 Ne5 16. Bb3
Rac8 17. hxg6 hxg6 18. Rxc8 Rxc8 19. g3 Kg7 20. Kg2 {White has nothing
tangible on the kingside while Black has completed development}) 13. Rc1 {
Ambitous play. White offers the b-pawn for fast development} (13. O-O) (13.
Qb3) 13... Qxb2 {Challenge accepted} 14. O-O Nc6 (14... Qb6) 15.
Bb3 {Clears the c-file for the rook but Black is happy with the pawn} (15. Nxc6
$14 bxc6 16. h5) 15... Nxd4 16. exd4 Qa3 (16... a5 {is superior.} 17. d5
Bf5 18. d6 Rad8 19. Rc5 Be4 20. Rxa5 Bc6) 17. Rc5 (17. Re1 a5 (17...
Rd8 18. Rc7) 18. Rc5 a4 19. Bd5 Bd7 (19... Bf5 20. Re3 Qb4 21. Re7)
20. Qb1 Rfe8 21. Rec1 {White has strong compensation for the pawn}) 17...
b6 (17... Kg7) 18. Rc6 Qe7 {Black invest a precious tempo to retreat the
queen but is no further in completling development. White has enough
compensation for the pawn} (18... Ba6 {Returning the f6 pawn to complete
development is a decent idea} 19. Re1 Rac8 20. Rxf6 Bc4) 19. d5 {[%mdl
1024] White has compensation.} Bb7 20. d6 Qe4 {[%mdl 64] Double Attack} 21. Bd5
{White picks up tempii where possible but has not established any advantage so
far} Qe5 22. Re1 Qh5 {[%CAl Rh5d1] Black is up to the task and offers a
queen trade to relieve the pressure} 23. Qxh5 gxh5 {} 24. d7 {[%mdl
2048] White fights for an advantage.} Rfd8 {Declining the exchange to get the
blockade ready gives White a chance to take over} ({Winning the exchange still
gets no advantage} 24... Bxc6 25. Bxc6 Rad8) 25. Re7 (25. Rd6
Bxd5 26. Rxd5 Kf8 27. Rc1 a5 28. Rc7 Ke7 29. a4 Rab8 30. g3 Ke6 31. Rxh5
Rxd7 32. Rc4 Rd5 33. Rxh7 Rc5 34. Rf4 f5 35. Rh6+ f6 36. Kg2) 25... Bxc6 (
25... b5 26. Rc8 Raxc8 27. Bxf7+ Kf8 28. dxc8=Q Bxc8 29. Rxa7) 26. Bxc6 {
[%mdl 4096] Endgame KRR-KRB} Kf8 {} 27. Re3 {The monster passer and
supported by the bishop gives White control of the position and clearly better
chances} Rab8 {} (27... f5 {Is still better for White after} 28. g3)
28. Kf1 (28. Kh2 {Is winning as Black cannot oppose the king's march
up the board} b5 29. Kg3 a5 {The queenside majority is not fast enough to give
meaningful counterplay} 30. Kf4 a4 (30... b4 31. g3 (31. Re2)) 31. a3
Kg7 (31... b4 32. axb4 Rxb4+ 33. Kf5 Rbb8 34. Bxa4 Ra8 35. Bc6 Rab8 36. Kxf6
{Black is out of useful moves.The end could be} h6 37. Re8+ {Forces a
winning pawn ending} Rxe8 38. dxe8=Q+ Rxe8 39. Bxe8 Kxe8 40. f4 Kf8 41. f5 Kg8
42. Ke7 Kg7 43. f6+ Kg6 44. g3 {A handy tempo move decides}) 32. Ke4 b4 33.
axb4 Rxb4+ 34. Kd5 Rb3 35. Bxa4 Rb2 (35... Rxe3 {Accelerates the loss} 36.
fxe3 Kf8 37. Kd6 f5 38. Bb5 {Black will run out of pawn moves soon}) 36.
Kd6 Rxf2 {Might as well take the pawn} (36... Rd2+ 37. Kc7 ({or} 37. Ke7
$18)) 37. Rg3+ Kf8 38. Kc7 Ra8 39. Bc6 Rc2 40. Rd3 Rc4 41. Kb6 Rd8 42. Kc7 Ra8
43. Rh3 (43. g3 Kg7) (43. Rf3 Ra7+ 44. Kb6 Rxd7 45. Bxd7 Rxh4 46. Bf5 Kg7
47. Kc6 {Black has drawing chances but White can press with no risk}) 43...
Kg7 (43... Ke7 44. Re3+ Kf8 45. Re8+) 44. Rg3+ Kf8 45. Rd3 (45. Rb3 Rc2
46. Rg3 Rc4 47. Rd3 Kg7 48. Rd6) 45... Kg7 46. Kd6 Rd8 47. Ke7 Rxd7+ 48. Bxd7
Re4+ 49. Kd6 Rxh4 50. Rg3+ Kf8 51. Kd5 {This is evaluated as winning by
Stockfish11 but still looks like tons of work}) 28... b5 29. Ke2 {The king
comes into play the human way} b4 {[%mdl 8192] } (29... a5 {
The pawns should advance together but White remains clearly better}) 30. Ba4
$11 {White gives away the win} (30. Kf3 {The king cannot be denied now.
The finish could be} Kg7 31. Re8 f5 32. Kf4 {The king can reach the d-pawn and
support the promotion effort} Kf6 33. Ke3 a5 {The queenside pawns pose no
threat as they cannot be supported effectively with ..Ra8,a4} 34. Kd4 Rbc8 35.
Kc5 Rb8 36. f4 h6 37. Ba4 Kg7 38. Kd6 Kf6 39. Kc7) 30... f5 31.
Kf3 {} a6 {[%mdl 8192] } (31... f6 {Is the saving move} 32. Kf4 Kf7
33. Bb3+ (33. Kxf5 Rb7 {The d-pawn falls} 34. Rd3 Rc7 35. Rd4 a5 36. Rd5 Rc3
37. Rxa5 Ra3 38. Bb3+ Ke7 39. Rb5 Rxd7) 33... Kf8 34. Ba4 Kf7 35. Kxf5 Rb7
36. Re6 Rdxd7 37. Bxd7 Rxd7 38. Rxf6+ Kg8 39. Ra6 {A draw is most likely})
32. Kf4 {The active king decides} Kg7 33. Re8 Kf6 34. Ke3 Kg6 (34...
a5) 35. Kd4 f6 36. Kc5 Kf7 37. Bb3+ Kg7 38. Re7+ Kg6 39. Ba4 {Accuracy: White
= 54%, Black = 51%.} 1-0
