23...? (Wednesday, January 28 04) J Polgar vs Macieja, 2002  (C42) Petrov Defense, 23 moves, 0-1 40.? (Tuesday, June 29) Duras vs E Cohn, 1907  (C43) Petrov, Modern Attack, 40 moves, 1-0 27.? (Monday, November 14) Tarrasch vs A Mannheimer, 1880  (C42) Petrov Defense, 28 moves, 1-0 18.? (Thursday, May 11) M Bonch-Osmolovsky vs B Baranov, 1953  (C43) Petrov, Modern Attack, 21 moves, 1-0 20...? (Saturday, August 26) M Bezuch vs V Hornak, 2000  (C42) Petrov Defense, 60 moves, 0-1 11.? (Tuesday, August 29) Messinger vs M Rack, 1989  (C42) Petrov Defense, 11 moves, 1-0 27...? (Saturday, April 14) Macieja vs Rozentalis, 1999  (C43) Petrov, Modern Attack, 34 moves, 0-1 25...? (Monday, July 23) L Didier vs Marshall, 1900  (C42) Petrov Defense, 26 moves, 0-1 30.? (Monday, October 8) M Judd vs J Congdon, 1874  (C42) Petrov Defense, 50 moves, 1-0 61...? (Wednesday, February 20) Grischuk vs J Polgar, 2007  (C42) Petrov Defense, 72 moves, 1/2-1/2 41...? (Friday, May 16) M Velcheva vs S Milliet, 2007  (C43) Petrov, Modern Attack, 52 moves, 0-1 23.? (Saturday, August 9) Smirin vs B Alterman, 1995  (C43) Petrov, Modern Attack, 25 moves, 1-0 26.? (Wednesday, October 1) Evans vs A Bisguier, 1958  (C42) Petrov Defense, 27 moves, 1-0 46...? (Friday, February 20) G Marco vs Pillsbury, 1896  (C42) Petrov Defense, 50 moves, 0-1 32...? (Monday, June 1) V Gashimov vs Kramnik, 2009  (C43) Petrov, Modern Attack, 32 moves, 0-1 23.? (Saturday, June 6) Anand vs Ivanchuk, 1993  (C43) Petrov, Modern Attack, 28 moves, 1-0 28...? (Friday, August 14) Tseshkovsky vs Vladimirov, 1986  (C42) Petrov Defense, 30 moves, 0-1 87.? (Tuesday, October 26) Navara vs Timman, 2007  (C42) Petrov Defense, 87 moves, 1-0 24.? (Friday, November 12) Korneev vs R O Perez Garcia, 2000  (C42) Petrov Defense, 28 moves, 1-0 33.? (Thursday, November 18) Kasparov vs A Georgiadis, 1996  (C42) Petrov Defense, 39 moves, 1-0 14...? (Thursday, January 13) I Figler vs G Borisenko, 1971  (C43) Petrov, Modern Attack, 16 moves, 0-1 17...? (Sunday, April 15) Huebner vs A S Segal, 1969  (C43) Petrov, Modern Attack, 51 moves, 0-1 20...? (Thursday, May 3) Lautier vs Gelfand, 1999  (C43) Petrov, Modern Attack, 25 moves, 0-1 31...? (Thursday, August 2) J Polgar vs N Gaprindashvili, 1990  (C43) Petrov, Modern Attack, 31 moves, 0-1 26...? (Sunday, November 18) O Zambrana vs I Krush, 2003  (C42) Petrov Defense, 35 moves, 0-1 33...? (Monday, March 25) A Jakubowska vs P Priya, 2007  (C42) Petrov Defense, 34 moves, 0-1 23.? (Saturday, January 4) Naiditsch vs Koneru, 2003  (C42) Petrov Defense, 28 moves, 1-0 15...? (Saturday, January 18) Ljubojevic vs S Makarichev, 1975  (C42) Petrov Defense, 28 moves, 0-1 20.? (Sunday, January 19) V Gashimov vs B Lalic, 2007  (C42) Petrov Defense, 25 moves, 1-0 24.? (Saturday, December 20) S del Rio de Angelis vs B Olape, 2004  (C42) Petrov Defense, 32 moves, 1-0 19.? (Saturday, February 14) Dominguez Perez vs So, 2014  (C42) Petrov Defense, 21 moves, 1-0 21.? (Thursday, February 19) Winawer vs Shumov, 1875  (C42) Petrov Defense, 26 moves, 1-0 29...? (Wednesday, April 22) Kamsky vs Karpov, 1996  (C43) Petrov, Modern Attack, 29 moves, 0-1 26.? (Friday, May 29) V Braun vs M Siebarth, 2005  (C42) Petrov Defense, 27 moves, 1-0 14.? (Sunday, November 1) Sutovsky vs Sakaev, 2007  (C43) Petrov, Modern Attack, 55 moves, 1-0 39.? (Wednesday, January 20) Caruana vs Ponomariov, 2014  (C42) Petrov Defense, 41 moves, 1-0 31.? (Tuesday, September 27) P N Lee vs M F Littleton, 1966  (C43) Petrov, Modern Attack, 33 moves, 1-0 19.? (Sunday, November 20) Kryvoruchko vs E Romanov, 2015  (C42) Petrov Defense, 24 moves, 1-0 50.? (Sunday, August 27) G Halvax vs A D Ivanova, 2012  (C42) Petrov Defense, 85 moves, 1-0 34.? (Wednesday, March 21) Karjakin vs D Frolyanov, 2013  (C42) Petrov Defense, 35 moves, 1-0 11.? (Saturday, May 12) V Gashimov vs Gelfand, 2009  (C43) Petrov, Modern Attack, 16 moves, 1-0 34.? (Wednesday, April 10) Bologan vs Rozentalis, 1998  (C42) Petrov Defense, 35 moves, 1-0 15.? (Thursday, May 30) Ponomariov vs Gelfand, 2008  (C42) Petrov Defense, 17 moves, 1-0 38.? (Monday, July 1) T Beerdsen vs A Zatonskih, 2018  (C42) Petrov Defense, 39 moves, 1-0 31.? (Monday, July 22) Kotronias vs N Kalesis, 1994  (C42) Petrov Defense, 31 moves, 1-0 24...? (Tuesday, December 24) H Wernich vs Mason, 1876  (C43) Petrov, Modern Attack, 25 moves, 0-1 30 ? (Sunday, January 19) Bologan vs Kasimdzhanov, 2002  (C42) Petrov Defense, 41 moves, 1-0 21.? (Sunday, March 15) A Becker vs Euwe, 1929  (C42) Petrov Defense, 56 moves, 1-0 20.? (Sunday, March 22) Radjabov vs Gelfand, 2010  (C42) Petrov Defense, 38 moves, 1-0 18...? (Monday, August 17) Ivanchuk vs Anand, 1988  (C42) Petrov Defense, 18 moves, 0-1 17.? (Sunday, November 8) B Adhiban vs L Wu, 2019  (C42) Petrov Defense, 26 moves, 1-0 52.? (Tuesday, November 9) Stellwagen vs Koneru, 2003  (C42) Petrov Defense, 53 moves, 1-0 20 ? (Saturdday,November 27) Kudrin vs H A Machado Jr, 1988  (C42) Petrov Defense, 29 moves, 1-0 33.? (Tuesday, December 28) S P Sethuraman vs N Guliyev, 2019  (C42) Petrov Defense, 34 moves, 1-0 20.? (Sunday, March 27) D Paravyan vs S Golubov, 2018  (C42) Petrov Defense, 28 moves, 1-0 23.? (Wednesday, March 30) Psakhis vs E Martinovsky, 1989  (C42) Petrov Defense, 25 moves, 1-0 16.? (Saturday, April 30) M Lagarde vs P Michalik, 2018  (C42) Petrov Defense, 29 moves, 1-0 31.? (Monday, May 23) Showalter vs Pillsbury, 1904  (C42) Petrov Defense, 31 moves, 1-0 7.? (Friday, December 2) B Gurgenidze vs R Bellin, 1977  (C43) Petrov, Modern Attack, 20 moves, 1-0 41.? (Monday, February 13) A Hoffman vs D Pereyra Arcija, 1995  (C43) Petrov, Modern Attack, 47 moves, 1-0 22...? (Monday, June 19) Anand vs Mamedyarov, 2022  (C42) Petrov Defense, 22 moves, 0-1 61 games