23.? (Tuesday, January 27 04) Alekhine vs A Frieman, 1924   (C21) Center Game, 24 moves, 1-0 25.? (September 11, 2004) J Mieses vs Albin, 1903  (C21) Center Game, 28 moves, 1-0 22...? (Saturday, September 18) Vitacek vs Duras, 1900  (C22) Center Game, 26 moves, 0-1 9.? (Friday, July 1) W Potter vs Matthews, 1868  (C21) Center Game, 13 moves, 1-0 19.? (Thursday, December 8) C Hartlaub vs M W Testa, 1912  (C21) Center Game, 24 moves, 1-0 9.? (Wednesday, December 13) Bronstein vs NN, 1950  (C22) Center Game, 10 moves, 1-0 18...? (Thursday, January 4) P Mertens vs E Eichhorn, 1968  (C22) Center Game, 25 moves, 0-1 8.? (Monday, August 13) Barnett vs Eastwood, 1949  (C21) Center Game, 8 moves, 1-0 16.? (Tuesday, November 13) M Ebeling vs J Killane, 2007  (C21) Center Game, 16 moves, 1-0 29.? (Sunday, April 18) Marshall vs Kupchik, 1913  (C21) Center Game, 31 moves, 1-0 15...? (Friday, July 30) S Sanchez Castillo vs E Ubiennykh, 2001  (C22) Center Game, 16 moves, 0-1 19.? (Friday, March 25) Chigorin vs Przepiorka, 1906  (C22) Center Game, 23 moves, 1-0 16...? (Monday, January 16) J Schwarz vs Tarrasch, 1883  (C21) Center Game, 17 moves, 0-1 23...? (Tuesday, March 13) F Englund vs Janowski, 1913  (C21) Center Game, 24 moves, 0-1 14.? (Wednesday, June 12) Lindehn vs Maczuski, 1863  (C21) Center Game, 16 moves, 1-0 17.? (Thursday, June 20) M Bier vs S Ricardo-Rocamora, 1876  (C21) Center Game, 21 moves, 1-0 27.? (Friday, December 20) F P Carr vs W C Palmer, 1903  (C21) Center Game, 33 moves, 1-0 16.? (Wednesday, January 8) J Mieses vs J Finn, 1903  (C21) Center Game, 35 moves, 1-0 18.? (Sunday, March 16) Lindehn vs Steinitz, 1864  (C21) Center Game, 28 moves, 1-0 25.? ) (Thursday, April 17) V Nielsen vs C F Delcomyn, 1894  (C21) Center Game, 32 moves, 1-0 23.? (Tuesday, June 10) J Mieses vs Marshall, 1903  (C21) Center Game, 24 moves, 1-0 28....? (Wednesday, July 15) M Melgosa vs O Castro, 1999  (C22) Center Game, 28 moves, 0-1 17...? (Saturday, August 15) F Amonatov vs V K Matta, 2014  (C22) Center Game, 22 moves, 0-1 19...? (Saturday, April 11) V Moiseenko vs E Bykov, 2018  (C22) Center Game, 28 moves, 0-1 12...? (June 28, 2020) Mariya Kovanova vs I Lysyj, 2016  (C22) Center Game, 29 moves, 0-1 25 games