A unique chess board, signed by the world's top ten players in Altibox Norway Chess 2018, will be auctioned to income in favor of diabetic patients.
18...Nxd3+! [Shirov chooses the best way to obtain an advantage.]
[18...Nxg2+ would not be so good, in view of 19.Kd2 Nc4+ 20.Bxc4 Rxc4 21.Rhg1 Bh3 22.Kd3 Rc6=]
19.Rxd3 Bf5 [△Nc4]
20.Rd1 [20.Ne4 Rc2! 21.d5 Bb4+ 22.Kd1 Rxb2=/+]
20...Nc4! [Alexei fully exploits the absence of the White's light-squared bishop.]
21.0–0 [21.b3? Nb2 22.Rd2 Nd3+ △Bb4 23.Rxd3 Bxd3 24.Kd2 Ba6-/+]
21...Nxb2 22.Rb1? [White gives up the exchange unnecessarily.]
[22.Rd2! Nc4 23.Rdd1 Ba3 24.Ne4 Re8 25.N2c3 Bxe4 26.Nxe4 f5 27.Nc5 b6 28.Nd3=/+]
22...Bxb1 23.Rxb1 Ba3 24.Nb5? [24.d5 Re8 25.Bxa7 Nd3 26.Bb6+ Kd7µ]
24...Rc2!–+ 0–1
[18...Nxg2+ would not be so good, in view of 19.Kd2 Nc4+ 20.Bxc4 Rxc4 21.Rhg1 Bh3 22.Kd3 Rc6=]
19.Rxd3 Bf5 [△Nc4]
20.Rd1 [20.Ne4 Rc2! 21.d5 Bb4+ 22.Kd1 Rxb2=/+]
20...Nc4! [Alexei fully exploits the absence of the White's light-squared bishop.]
21.0–0 [21.b3? Nb2 22.Rd2 Nd3+ △Bb4 23.Rxd3 Bxd3 24.Kd2 Ba6-/+]
21...Nxb2 22.Rb1? [White gives up the exchange unnecessarily.]
[22.Rd2! Nc4 23.Rdd1 Ba3 24.Ne4 Re8 25.N2c3 Bxe4 26.Nxe4 f5 27.Nc5 b6 28.Nd3=/+]
22...Bxb1 23.Rxb1 Ba3 24.Nb5? [24.d5 Re8 25.Bxa7 Nd3 26.Bb6+ Kd7µ]
24...Rc2!–+ 0–1
28...Be1+?? [Black missed a golden opportunity to penetrate the opponent's camp via the 7th rank.]
[28...Rxc2! intending ...Qe2. White is forced to lose matterial. 29.Rf2 cxb3!? (29...Be1 30.Bxc5 cxb3 31.Bd4 Bxf2+ 32.Bxf2 bxa2–+) 30.Kg2 (30.axb3 Be1–+; 30.Rxc2? bxc2 31.Rc1 Be1+ 32.Kg2 Qe2+ 33.Kg1 Qf2+ 34.Kh1 Bxf3+) 30...Be1 31.Rxc2 bxc2 32.Ra1 Qe2+ 33.Kh1 (33.Kh3 Bd7+) 33...Bxf3+ 34.Qxf3 Qxf3+ 35.Kh2 Qd1–+; 28...cxb3 29.cxb3 Rc2 30.Rf2 (30.Bxc5 Be5) 30...Be1–+ 31.Bxc5 Rxc5 32.Rxe1 Qxe1 33.Qd2 Qg1+ 34.Rg2 Qh1 35.Qd8+ Kh7 36.Qf6 Qe1+ 37.Rf2 Bd5 38.Qd4 Qg1+ 39.Kf4 Rb5 40.a4 Rb4! 41.Qxb4 Qxf2 42.Ke5 Qxf3–+]
29.Rfxe1! Rxe1 30.Rxe1 Qxe1+ 31.Kg2 Qe2+ 32.Kg3 Qe1+ 33.Kg2 Qe2+ 34.Kg3 ½–½
[28...Rxc2! intending ...Qe2. White is forced to lose matterial. 29.Rf2 cxb3!? (29...Be1 30.Bxc5 cxb3 31.Bd4 Bxf2+ 32.Bxf2 bxa2–+) 30.Kg2 (30.axb3 Be1–+; 30.Rxc2? bxc2 31.Rc1 Be1+ 32.Kg2 Qe2+ 33.Kg1 Qf2+ 34.Kh1 Bxf3+) 30...Be1 31.Rxc2 bxc2 32.Ra1 Qe2+ 33.Kh1 (33.Kh3 Bd7+) 33...Bxf3+ 34.Qxf3 Qxf3+ 35.Kh2 Qd1–+; 28...cxb3 29.cxb3 Rc2 30.Rf2 (30.Bxc5 Be5) 30...Be1–+ 31.Bxc5 Rxc5 32.Rxe1 Qxe1 33.Qd2 Qg1+ 34.Rg2 Qh1 35.Qd8+ Kh7 36.Qf6 Qe1+ 37.Rf2 Bd5 38.Qd4 Qg1+ 39.Kf4 Rb5 40.a4 Rb4! 41.Qxb4 Qxf2 42.Ke5 Qxf3–+]
29.Rfxe1! Rxe1 30.Rxe1 Qxe1+ 31.Kg2 Qe2+ 32.Kg3 Qe1+ 33.Kg2 Qe2+ 34.Kg3 ½–½