[Event "Ch Bulgaria"] [Site "masterchessopen.com Sofia (Bulgaria)"] [Date "1947.09.07"] [Round "1"] [White "Karastoichev Emil (BUL)"] [Black "Naidenov Nikolai"] [Result "1-0"] [ECO "E02"] [Opening "Catalan: Open, 5.Qa4+"] 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Nf3 a6 7.Qxc4 b5 8.Qc2 Bb7 9.Nc3 c5 10.dxc5 Bxc5 11.a3 Rc8 12.Nh4 Bxg2 13.Nxg2 Qb6 14.Be3 O-O 15.O-O Ng4 16.Bxc5 Qxc5 17.Nf4 Ndf6 18.Rad1 g5 19.Nd3 Qf5 20.Qd2 e5 21.f3 Nh6 22.e4 Qg6 23.Nxe5 Qh5 24.Qd6 Kg7 25.Qxa6 Rce8 26.Qxb5 Kg8 27.Nd5 Nxd5 28.Rxd5 Rb8 29.Qe2 {#r} 1-0