15...Rfb8?!
Black's best chance of gaining counterplay is with 15...b5! 16.B×b5 Nb6!
If 17.c4, then 17...a6.
16.a4 Nf8 17.Bb3 Bc8 18.Bc2
Black's best chance of gaining counterplay is with 15...b5! 16.B×b5 Nb6!
If 17.c4, then 17...a6.
16.a4 Nf8 17.Bb3 Bc8 18.Bc2
37. Rc2
37. Rd1!
This strong move significantly increases white's advantage.
A)37...Nc3 38. Nd6 Rb8 39. Rc1 +-
B)37... Rxc4 38. Rxd5 Kf8 39. Ke2 Ke7 40. Kd3 Rc1 41.Kd4 +-
37... Nb4?
37...Kf8 was logical.
38. Rc3 Nd5 39. Rc2 Nb4 40. Rc3 Nd5 41. Rd3 Nf4 42. Rd4 Ne6 43. Re4 Rc5 44. b6 Rb5 45. Ke2 +-
37. Rd1!
This strong move significantly increases white's advantage.
A)37...Nc3 38. Nd6 Rb8 39. Rc1 +-
B)37... Rxc4 38. Rxd5 Kf8 39. Ke2 Ke7 40. Kd3 Rc1 41.Kd4 +-
37... Nb4?
37...Kf8 was logical.
38. Rc3 Nd5 39. Rc2 Nb4 40. Rc3 Nd5 41. Rd3 Nf4 42. Rd4 Ne6 43. Re4 Rc5 44. b6 Rb5 45. Ke2 +-
74. b7??
GM Akobian has missed his winning chances.
74. Kb5! Rb1+ 75. Ka6 Ra1+ 76. Ra5+-
74... Rxc4+ 75. Kb6 f5!
He had probably overlooked this strong Black's response.
76.Rxg6+
76. b8=Q Rb4+ 77. Kc7 Rxb8 78. Kxb8 Kf6 79. f4 Nc5 80. g4 Ne4 81. gxf5 Nxg5 82. fxg6 =
76... Kf7 77. Rd6 Rb4+ 78. Kc7 Rxb7+ 79. Kxb7 Nxf2 =
GM Akobian has missed his winning chances.
74. Kb5! Rb1+ 75. Ka6 Ra1+ 76. Ra5+-
74... Rxc4+ 75. Kb6 f5!
He had probably overlooked this strong Black's response.
76.Rxg6+
76. b8=Q Rb4+ 77. Kc7 Rxb8 78. Kxb8 Kf6 79. f4 Nc5 80. g4 Ne4 81. gxf5 Nxg5 82. fxg6 =
76... Kf7 77. Rd6 Rb4+ 78. Kc7 Rxb7+ 79. Kxb7 Nxf2 =
22...R×a4??
Azerbaijani GM Vasif Durarbayli missed an easy win.
22...N×e3!
A)23.f×e3 Rb2 24.Nh4 Bh3 25.Rf1 f6 -+
B)23.Q×d7 Rb2 -+
C)23.Re1 Qc2! 24.Q×d7 Rb2 -+
23.Re1 Qb5 24.Bd2 Rc4 =
Azerbaijani GM Vasif Durarbayli missed an easy win.
22...N×e3!
A)23.f×e3 Rb2 24.Nh4 Bh3 25.Rf1 f6 -+
B)23.Q×d7 Rb2 -+
C)23.Re1 Qc2! 24.Q×d7 Rb2 -+
23.Re1 Qb5 24.Bd2 Rc4 =
20...Qa8!
Defending the rook on d8 a second time, and threatening to simplify with 21...Nc5 and 22...Nxe4.
21.Qc3
Stepping off the d-file so that 21...Nc5? 22.Nxc5 bxc5 leaves Black with a weak pawn on c5.
21...Nb8!
But the second retreat does the trick. Black is threatening to win a piece with 22...Rxd1 23 Rxd1 Qxe4. Seeing no way to keep an edge once Black plays ...Nc6 and exchanges rooks on the d-file, Kasparov made a sham piece sacrifice leading to an immediate perpetual check draw.
22.Nf6+
After 22...gxf6 23.Qxf6 (attacking d8) 23...Rxd1 24.Qg5+ Kh8 25.Qf6+ White gives perpetual check.
Defending the rook on d8 a second time, and threatening to simplify with 21...Nc5 and 22...Nxe4.
21.Qc3
Stepping off the d-file so that 21...Nc5? 22.Nxc5 bxc5 leaves Black with a weak pawn on c5.
21...Nb8!
But the second retreat does the trick. Black is threatening to win a piece with 22...Rxd1 23 Rxd1 Qxe4. Seeing no way to keep an edge once Black plays ...Nc6 and exchanges rooks on the d-file, Kasparov made a sham piece sacrifice leading to an immediate perpetual check draw.
22.Nf6+
After 22...gxf6 23.Qxf6 (attacking d8) 23...Rxd1 24.Qg5+ Kh8 25.Qf6+ White gives perpetual check.
10.Qd2!
Paradoxically, the way to achieve the best future for the bishop on c1...is to temporarily stalemate it! Michael Adams wants to put the bishop on b2, but the immediate 10.b3? runs into 10...Bb4 when Black wins the exchange. Therefore to prepare 11 b3 White defends c3 with the queen.
10...Be7 11.b3 Nf6 12.Bb2 d6 13.a4 b4 14.Na2.
Paradoxically, the way to achieve the best future for the bishop on c1...is to temporarily stalemate it! Michael Adams wants to put the bishop on b2, but the immediate 10.b3? runs into 10...Bb4 when Black wins the exchange. Therefore to prepare 11 b3 White defends c3 with the queen.
10...Be7 11.b3 Nf6 12.Bb2 d6 13.a4 b4 14.Na2.
Unity Chess Multiple Choice 459
public poll
B: Nf2 – 8
👍👍👍👍👍👍👍 53%
@Afshin3333, Nikhil, Jayden, @SteveWongso, Sanjana, Venkat, @Sophia_Peng, Atharva
A: Bf3 – 6
👍👍👍👍👍 40%
🔱, Jonas, Vincent, Bryson, @RichardPeng, Jaikrishnan
C: Kh1 – 1
👍 7%
Gavin
👥 15 people voted so far.
public poll
B: Nf2 – 8
👍👍👍👍👍👍👍 53%
@Afshin3333, Nikhil, Jayden, @SteveWongso, Sanjana, Venkat, @Sophia_Peng, Atharva
A: Bf3 – 6
👍👍👍👍👍 40%
🔱, Jonas, Vincent, Bryson, @RichardPeng, Jaikrishnan
C: Kh1 – 1
👍 7%
Gavin
👥 15 people voted so far.
Unity Chess Multiple Choice 460
public poll
A: B×f5 – 18
👍👍👍👍👍👍👍 90%
@mrk00sha, Morteza, Kavian, @saeidbiranvand, Jonas, Gavin, @Afshin3333, Nikhil, Jayden, Janne, @SteveWongso, Vincent, Mieke, Bryson, Venkat, @RichardPeng, Jaikrishnan, Atharva
B: Nb3 – 2
👍 10%
Sanjana, @Sophia_Peng
C: Rg1
▫️ 0%
👥 20 people voted so far.
public poll
A: B×f5 – 18
👍👍👍👍👍👍👍 90%
@mrk00sha, Morteza, Kavian, @saeidbiranvand, Jonas, Gavin, @Afshin3333, Nikhil, Jayden, Janne, @SteveWongso, Vincent, Mieke, Bryson, Venkat, @RichardPeng, Jaikrishnan, Atharva
B: Nb3 – 2
👍 10%
Sanjana, @Sophia_Peng
C: Rg1
▫️ 0%
👥 20 people voted so far.