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Magnus Carlsen vs Nils Grandelius
Tata Steel Masters (2021), Wijk aan Zee NED, rd 9, Jan-26
Sicilian Defense: Najdorf Variation (B90)  ·  1-0

8
7
6
5
4
3
2
a
1
b
c
d
e
f
g
h
White to move.
ANALYSIS [x]
Notes by Stockfish 9 v010218 (minimum 6s/ply)6...Nbd7 was played in F Vallejo Pons vs Grischuk, 2014 (0-1)better is 7...e5 8.Nb3 Nc6 9.Nd5 Nxd5 10.exd5 Ne7 11.c4 g6 = -0.25 (28 ply)= +0.39 (26 ply)better is 9...h5 10.Be2 h4 11.Qg5 d5 12.O-O h3 13.g3 Qe7 14.exd5 = -0.22 (18 ply) ⩲ +0.53 (27 ply)better is 21.Bd3 e4 22.Bc4 Bc6 23.Be6 Rab8 24.b3 Bxa4 25.Rxa4 Ne5 = +0.41 (25 ply)better is 21...e4 22.Qg3 Qd8 23.Qf4 Bc6 24.Bc4 Qxa5 25.Be6 Nf6 = -0.30 (25 ply)= +0.39 (28 ply) after 22.Bf3 Bxf5 23.Qg3 Qxg3 24.hxg3 Rab8 25.Rac1 Rb5 26.Bc6 26...Raf8 27.Rf1 R5f6 28.Rxa6 e4 29.Qxe4 Rxf2 30.Raa1 = 0.00 (33 ply) ⩲ +0.84 (32 ply)better is 30.b3 Rf6 31.Kg2 Rf7 32.Re2 Qf6 33.h4 Rf8 34.Qe4 Rf7 ⩲ +0.75 (34 ply) 30...c4 31.fxg5 cxd3 32.cxd3 hxg5 33.Rxe5 Rxb2 34.Rd5 = +0.08 (36 ply) ⩲ +1.18 (30 ply)better is 35...d3 36.cxd3 Qb6 37.Qc4 Rd8 38.Ke3 Qb1 39.Re5 Qh1 ⩲ +0.92 (32 ply) ± +1.57 (32 ply) 36...Qa8 37.Rc7 Rg8 38.Kg1 Qa4 39.Kg2 Qa1 40.Re7 Qc3 ⩲ +1.32 (32 ply) ± +2.46 (34 ply) 38...d3 39.Qf5+ Kg8 40.Rc8+ Rxc8 41.Qxc8+ Kf7 42.Qf5+ ± +2.30 (31 ply) 39.f5 Qc1 40.f6 Qd2+ 41.Kf3 Qd1+ 42.Kg2 Qg4 43.h3 Qg6 +- +5.77 (34 ply)better is 39...Kh8 40.Kh3 Qa1 41.Rc6 Kh7 42.Qe4+ Kh8 43.Re6 Qf1+ ± +1.57 (31 ply) ± +2.25 (31 ply) after 40.Kh3 Qd2 41.Qe4+ Kh8 42.Rd7 Qd1 43.Kh4 Qd2 44.h3 Qd1 43.Kh4 Qd2 44.h3 Qc3 45.Rxd4 Qc8 46.Rd5 Re8 47.Qg6 Rd8 ± +2.48 (33 ply) ⩲ +1.28 (30 ply) 48...Kg8 49.f6 Qd2+ 50.Kf3 gxf6 51.Qg6+ Kh8 52.Qxf6+ Kh7 ± +1.56 (26 ply) 49.h4 Qd2+ 50.Kh3 Kg8 51.Qe8+ Kh7 52.Qg6+ Kh8 53.f6 gxf6 ± +2.34 (32 ply) ± +1.53 (30 ply) 58...Qb8 59.Qc5+ Kf7 60.Qxd4 Qc7 61.Qe4 Kg7 62.c4 Qc5 ± +2.37 (29 ply)+- +4.92 (29 ply)65...Qe1 66.g6 Qh1 67.g7 Ke7 68.Qe5+ Kd7 69.Qxd4+ Ke6 +- +132.60 (31 ply)1-0

rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR w KQkq - 0 1
FEN COPIED

Annotations by Stockfish (Computer).      [35435 more games annotated by Stockfish]

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Kibitzer's Corner
Jan-26-21  0ZeR0: I don't think I've ever seen 6.Qd3 before, but it seems interesting enough. Either way, Magnus makes it work here.

After 30.f4 black had only one equalizing move with 30...c4!: 31.Qxc4 exf4 32.Re8+ Kh7 33.Qg8+ Kg6 34.Re6+ Rxe6 35.Qxe6+ Qf6 36.Qxf6 Kxf6 37.gxf4 Kf5 38.b4 Kxf4 and black's king is within the square of the pawn. Black will start pushing his kingside pawns and it's a draw.

Jan-26-21
Premium Chessgames Member
  Diademas: It follows Caruana vs Ding Liren, 2020, a game I guess they both are familiar with, until Grandelius deviates with 7...Nc6.
The other game continued 7...b6 8.Qg3 Bb7 9.f3 Nbd7 10.Be3 Rc8 11.Be2 Be7 and ended in a draw after 73 moves.
Jan-27-21  Ulhumbrus: If after 24...Nxb6 the a file is too valuable to White one alternative is 24...Rd8

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