[what is this?]

[what is this?]

Instructive Games 60 games, 1795-2006 tpstar 4N 1-99 4. Bb5 Bd6 a) Bxc6 b) GP c) RL d) etc. 100-200 4. d4 ed 5. Nxd4 Bb4 6.Nxc6 bxc6 7. Bd3 0-0 8. 0-0 d5 9. ed cd 57 games, 1874-2016 tpstar anti-London 1 game, 2018 tpstar C4 18 games, 1936-2016 tpstar F4 9 games, 1927-2004 tpstar GP 32 games, 1851-2017 tpstar KG 0-99 100-199 1. e4 e5 2. f4 ef 3. Nf3 d6 4. Bc4 h6 5. d4 g5 6. 0-0 g5 1) 7. c3 Nc6 8. g3 Bh3 9. gf Qd7 2) 7. c3 Nc6 8. g3 Bh3 9. Rf2 Nf6 200-299 300-399 75 games, 1841-2010 tpstar ML 32 games, 1860-2005 tpstar NI 1-100 4. Qc2 101-199 4. a3 200-299 4. e3 300-399 4. Nf3 400-499 4. Bg5 500-599 4. f3 57 games, 1928-2016 tpstar QG 3 games, 1926-2004 tpstar QI 39 games, 1918-2008 tpstar RL 1-99 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 1) 5. Nxe5 2) 5. 0-0 3) 5. Nc3 4) 5. d3 5) 5. 0-0 Qd6 100-199 5. d4 ed 6. Qxd4 Qxd4 7. Nxd4 Bd7 200-299 4. Ba4 Nf6 5. 0-0 Nxe4 6. Re1 Nc5 500-599 1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. 0-0 Nxe4 6. d4 c5 7. Bb3 d5 8. de Be6 9. Nbd2 Nc5 10. c3 d4 11. Bxe6 Nxe6 12. cd Ncxd4 13. Nxd4 Qxd4 111 games, 1854-2016 tpstar SG 1-99 1. e4 e5 2. Nf3 Nc6 3. d4 ed 4. Nxd4 Bc5 5. Nxc6 Qf6 100-199 5. Be3 Qf6 6. c3 Qg6 200-299 5. Nb3 Bb6 76 games, 1873-2014 tpstar VG 1-99 100-199 200-299 1. e4 e5 2. Nc3 Nf6 3.Bc4 Nxe4 34 games, 1889-2006