WORLD YOUTH UNDER-16 CHESS OLYMPIAD-2018
Results-R7:
http://chess-results.com/tnr395106.aspx?lan=1&art=3&rd=7&flag=30
Results-R7:
http://chess-results.com/tnr395106.aspx?lan=1&art=3&rd=7&flag=30
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43...Ne5? [Nabaty overestimated his attacking chances and played for a win in a worse position. He should have kept the c-pawn blocked and tried to equality with the following continuation:]
[43...Qxg4! 44.Nd6 Ne7 45.Ne3 Qf3+ 46.Kg1 Qe2 47.Rc4 Nc6 48.Rxe4 Qb2 49.Kg2 Qxb3 50.Rf4 Ne5 51.Ne8+ Kg8 52.Re4 Nc6²]
44.c6! Nd3 45.Rxd3! [A well-calculated exchange sacrifice that leads to promote the c-pawn by force.]
[45.c7?? Qf3+ 46.Kh2 Qxf2+ 47.Kh3 Qxf1+ 48.Kh2 Nf2–+]
45...exd3 46.c7 Qc2 47.Nd6! Qc6+ 48.Kg1 [48.Kh2!?]
48...d2 49.Nxd2 Qxd6 50.c8Q Qxd2 51.Qc7+ Kg8 52.Qc4++– 1–0
[43...Qxg4! 44.Nd6 Ne7 45.Ne3 Qf3+ 46.Kg1 Qe2 47.Rc4 Nc6 48.Rxe4 Qb2 49.Kg2 Qxb3 50.Rf4 Ne5 51.Ne8+ Kg8 52.Re4 Nc6²]
44.c6! Nd3 45.Rxd3! [A well-calculated exchange sacrifice that leads to promote the c-pawn by force.]
[45.c7?? Qf3+ 46.Kh2 Qxf2+ 47.Kh3 Qxf1+ 48.Kh2 Nf2–+]
45...exd3 46.c7 Qc2 47.Nd6! Qc6+ 48.Kg1 [48.Kh2!?]
48...d2 49.Nxd2 Qxd6 50.c8Q Qxd2 51.Qc7+ Kg8 52.Qc4++– 1–0
17...Nxc5! [Black puts voluntarily his own knight on d6 in the pin. However, he has calculated the lines precisely.]
[17...Rxc5 18.Ba3 Qc8 19.Qd2 cxb3 20.axb3 Bb7 21.Qb2 a5 22.Bxc5 Nxc5 23.e5 Nf5 24.Rb1 Ne4 25.Nxe4 Bxe4 26.Rbc1 Bc5 27.Ne1 Bxg2 28.Nxg2 Qb7 29.Rc4 Qf3 30.Rd7 Qc6 31.Rd3=; 17...bxc5 18.e5 Nb5 19.bxc4 Nxc3 20.Rxc3 Rc7 21.Rb3²]
18.e5 cxb3 19.Qe1 Nc4!! [An amazing queen sacrifice. Is it really possible?]
[19...Nd3 20.Rxd3 Bxd3 21.exd6 Bxd6 22.axb3=]
20.Rxd8 Rexd8 21.axb3 [21.Rb1 Nxb2 22.Rxb2 Nd3 23.Qd2 Nxb2 24.Qxb2 Rxc3 25.Qxc3 Rd1+ 26.Ne1 bxa2–+]
21...Nd3? [21...Nxb2! 22.Rc2 Nbd3 23.Qa1 Nb4 24.Rb2 Rd3 25.Rb1 Nc2 26.Qb2 Nxb3 27.Qxb3 Rdxc3 28.Qa4 Be2 29.Nd2 Na3 30.Re1 Rc1–+]
22.Qe4 Ncxb2 [22...Nc5! 23.Qh4 Nxb2³]
23.Ng5 g6 24.Rc2 Be7 25.Qh4 h5 26.g4 Nf4! 27.Bf1 [27.gxh5 Rxc3 28.h3 Rd1+ 29.Kh2 Nxg2 30.Kxg2 Bb7+–+]
27...Bxf1 28.Kxf1 Rxc3 [28...Rxc3 29.Rxc3 Rd1#] 0–1
[17...Rxc5 18.Ba3 Qc8 19.Qd2 cxb3 20.axb3 Bb7 21.Qb2 a5 22.Bxc5 Nxc5 23.e5 Nf5 24.Rb1 Ne4 25.Nxe4 Bxe4 26.Rbc1 Bc5 27.Ne1 Bxg2 28.Nxg2 Qb7 29.Rc4 Qf3 30.Rd7 Qc6 31.Rd3=; 17...bxc5 18.e5 Nb5 19.bxc4 Nxc3 20.Rxc3 Rc7 21.Rb3²]
18.e5 cxb3 19.Qe1 Nc4!! [An amazing queen sacrifice. Is it really possible?]
[19...Nd3 20.Rxd3 Bxd3 21.exd6 Bxd6 22.axb3=]
20.Rxd8 Rexd8 21.axb3 [21.Rb1 Nxb2 22.Rxb2 Nd3 23.Qd2 Nxb2 24.Qxb2 Rxc3 25.Qxc3 Rd1+ 26.Ne1 bxa2–+]
21...Nd3? [21...Nxb2! 22.Rc2 Nbd3 23.Qa1 Nb4 24.Rb2 Rd3 25.Rb1 Nc2 26.Qb2 Nxb3 27.Qxb3 Rdxc3 28.Qa4 Be2 29.Nd2 Na3 30.Re1 Rc1–+]
22.Qe4 Ncxb2 [22...Nc5! 23.Qh4 Nxb2³]
23.Ng5 g6 24.Rc2 Be7 25.Qh4 h5 26.g4 Nf4! 27.Bf1 [27.gxh5 Rxc3 28.h3 Rd1+ 29.Kh2 Nxg2 30.Kxg2 Bb7+–+]
27...Bxf1 28.Kxf1 Rxc3 [28...Rxc3 29.Rxc3 Rd1#] 0–1
50...Bd2! [50...Kc5 51.Rd1 Bd2 52.Ra1 Rd4 53.Ba4 Bc3 54.Rf1 Rd2 55.Bb5 Rd3 56.Rh1 Bd2 57.Rb1 Rc3 58.Rd1 Kd4 59.Ra1 Rc2 60.Ba4 Kc3–+; 50...Rg7 51.Rd1+ Bd2 52.Rh2 Kc3 53.Ke2 Kb2 54.Kd3 Ka3 (54...Kxa2 55.Ba4 Kb2 56.Re2³) 55.Re2 Ra7 56.Bc6 Rae7 57.Bb5 Bc3 58.c5 dxc5 59.d6 R7e6 60.Kc2 Rd4 61.d7 (61.Rxd4 cxd4 62.d7 Rd6 63.Kd3 Bd2 64.Rg2 Kxa2 65.Ba4=) 61...Red6 62.Rxd4 Bxd4!–+]
51.Bc6 Rc7?! [51...Kc3! 52.Rd1 Kc2 53.Rf1 Rd4–+]
52.Ba4 Kc3 53.Rg1 Kb2 54.g4?? hxg4+ 55.Rxg4 Rh7 [55...fxg4+! 56.Kxe4 Kc3 57.Rxe3+ (57.f5 gxf5+ 58.Kxf5 Rf7+ 59.Kxg4 Rf2–+) ]
56.Rxg6 Rxh4 57.c5 Rhxf4+ 58.Kg3 dxc5 59.d6 Rg4+ 60.Rxg4 fxg4 61.d7 Rd4 62.Bb5 Kxa2 63.Rh2 Kxb3 64.Rh8 e2 65.Bxe2 Rxd7 66.Ra8 Be1+ 67.Kxg4 a4 0–1
51.Bc6 Rc7?! [51...Kc3! 52.Rd1 Kc2 53.Rf1 Rd4–+]
52.Ba4 Kc3 53.Rg1 Kb2 54.g4?? hxg4+ 55.Rxg4 Rh7 [55...fxg4+! 56.Kxe4 Kc3 57.Rxe3+ (57.f5 gxf5+ 58.Kxf5 Rf7+ 59.Kxg4 Rf2–+) ]
56.Rxg6 Rxh4 57.c5 Rhxf4+ 58.Kg3 dxc5 59.d6 Rg4+ 60.Rxg4 fxg4 61.d7 Rd4 62.Bb5 Kxa2 63.Rh2 Kxb3 64.Rh8 e2 65.Bxe2 Rxd7 66.Ra8 Be1+ 67.Kxg4 a4 0–1