22.Nxd7+!!
Exchanging his nice knight for Petrosian's bad bishop, and received a technically winning position. After this exchange, Fischer takes control of the open c-file, and this consideration is more important than the superiority of the knight on c5 over the bishop on d7. In positions with a superior pawn structure, the exchange of pieces increases your advantage. The game ended quickly:
22...Rxd7 23.Rc1 Rd6 24.Rc7 Nd7 25.Re2 g6 26.Kf2 h5 27.f4 h4 28.Kf3 f5 29.Ke3 d4+ 30.Kd2 Nb6 31.Ree7 Nd5 32.Rf7+ Ke8 33.Rb7 Nxb4 34.Bc4
1-0
Exchanging his nice knight for Petrosian's bad bishop, and received a technically winning position. After this exchange, Fischer takes control of the open c-file, and this consideration is more important than the superiority of the knight on c5 over the bishop on d7. In positions with a superior pawn structure, the exchange of pieces increases your advantage. The game ended quickly:
22...Rxd7 23.Rc1 Rd6 24.Rc7 Nd7 25.Re2 g6 26.Kf2 h5 27.f4 h4 28.Kf3 f5 29.Ke3 d4+ 30.Kd2 Nb6 31.Ree7 Nd5 32.Rf7+ Ke8 33.Rb7 Nxb4 34.Bc4
1-0
27.Qd2!
Continuing to shake Black's position. The white queen repositions herself in an effort to take advantage of the dark square weaknesses created by the move 26...g6.
27...Kg7 28.Kg2! f6!
Black covers important dark squares.
29.Bxc6! Rxc6 30.Re2 Rcc8 31.Rce1 c4 32.h4+/-
Continuing to shake Black's position. The white queen repositions herself in an effort to take advantage of the dark square weaknesses created by the move 26...g6.
27...Kg7 28.Kg2! f6!
Black covers important dark squares.
29.Bxc6! Rxc6 30.Re2 Rcc8 31.Rce1 c4 32.h4+/-
Unity Chess Multiple Choice 629
public poll
A: Bd2 – 6
👍👍👍👍👍👍👍 60%
Jonas, Gavin, @AryanLeekha, Rachel, Zhenrui, Sanjana
B: Be3 – 3
👍👍👍👍 30%
@Sophia_Peng, @RichardPeng, Raymond
C: Bg5 – 1
👍 10%
@Afshin3333
👥 10 people voted so far.
public poll
A: Bd2 – 6
👍👍👍👍👍👍👍 60%
Jonas, Gavin, @AryanLeekha, Rachel, Zhenrui, Sanjana
B: Be3 – 3
👍👍👍👍 30%
@Sophia_Peng, @RichardPeng, Raymond
C: Bg5 – 1
👍 10%
@Afshin3333
👥 10 people voted so far.
Unity Chess Multiple Choice 630
public poll
C: Ne4 – 9
👍👍👍👍👍👍👍 75%
@Mehrdad0832, Jonas, Gavin, @Sophia_Peng, @AryanLeekha, Rachel, Zhenrui, Sanjana, @Raymond666
A: Nh4 – 2
👍👍 17%
@RichardPeng, Atharva
B: Qd2 – 1
👍 8%
@Afshin3333
👥 12 people voted so far.
public poll
C: Ne4 – 9
👍👍👍👍👍👍👍 75%
@Mehrdad0832, Jonas, Gavin, @Sophia_Peng, @AryanLeekha, Rachel, Zhenrui, Sanjana, @Raymond666
A: Nh4 – 2
👍👍 17%
@RichardPeng, Atharva
B: Qd2 – 1
👍 8%
@Afshin3333
👥 12 people voted so far.
Rd 4 at Sinquefield Cup: all games drawn between Anand-Carlsen (54 moves in knight vs pawns ending), Mamedyarov-Aronian (24 move perpetual check), Caruana-Nakamura (49 moves), Grischuk-Vachier_Lagrave (25 move perpetual check), and So-Karjakin (48 move perpetual check).
12. Nfg5!
The correct and interesting continuation.
12...hxg5 13. Qh5 Qc8 14. Nf6+ gxf6 15. Qg6+ Kh8 16. Qh6+ Kg8 17.Qg6+ Kh8 1/2-1/2
The correct and interesting continuation.
12...hxg5 13. Qh5 Qc8 14. Nf6+ gxf6 15. Qg6+ Kh8 16. Qh6+ Kg8 17.Qg6+ Kh8 1/2-1/2
39... Rxb2?
Grischuk missed a golden opportunity to win the game. He should have defended his f3-pawn and set a trap as well:
39... Rh3!
A) 40. Kf2 Rxg1 41. Kxg1 f2+ 42. Kxf2 Rxd3 -+
B) 40. Rd1 Rg3 41. Kf2 Rg2+ 42. Kxf3 Rhxg1 -+
40. Rxf3+ Ke7 41. Rf7+ Kd6 42. Rxg7 Rb1+ 43. Ke2 Rhxg1 44. g5 =
Grischuk missed a golden opportunity to win the game. He should have defended his f3-pawn and set a trap as well:
39... Rh3!
A) 40. Kf2 Rxg1 41. Kxg1 f2+ 42. Kxf2 Rxd3 -+
B) 40. Rd1 Rg3 41. Kf2 Rg2+ 42. Kxf3 Rhxg1 -+
40. Rxf3+ Ke7 41. Rf7+ Kd6 42. Rxg7 Rb1+ 43. Ke2 Rhxg1 44. g5 =