Mephisto Dallas 68020 x Novag Star Diamond

[Event "Computer chess game"] [Site "OMPERICIAS-PC"] [Date "2020.06.27"] [Round "?"] [White "Mephisto Dallas 68020"] [Black "Novag Star Diamond"] [Result "1/2-1/2"] [ECO "B01"] [Annotator "Tactical Analysis 3.0 (8s)"] [PlyCount "81"] [EventDate "2020.??.??"] 1. e4 d5 2. exd5 Nf6 3. Bb5+ Bd7 4. Bc4 Bg4 5. f3 Bc8 6. Nc3 Nbd7 $1 7. d3 Nb6 $1 8. Nge2 Nfxd5 9. Nxd5 Nxd5 10. O-O e6 11. Qe1 Bc5+ 12. d4 Bd6 13. Bxd5 (13. Kh1 $11 {is more appropriate.}) 13... exd5 $14 14. Nf4+ Kf8 15. Nxd5 Bxh2+ 16. Kxh2 Qxd5 17. Qb4+ Kg8 18. Bf4 (18. Re1 $16 {[%cal Re1e8]} Be6 19. Re5) 18... Qf5 (18... a5 $14 19. Qe7 Be6) 19. Bxc7 $16 Qxc2 20. Rac1 Qf5 21. Rfe1 {[%cal Re1e8]} h6 22. Re8+ Kh7 23. Rxh8+ Kxh8 24. Qf8+ Kh7 25. Be5 $1 { [%csl Ge5][%cal Rf8g7]} Qg5 26. Qxf7 (26. Rxc8 Qh4+ 27. Kg1 Qe1+ 28. Kh2 Qh4+ 29. Kg1 Qe1+ 30. Kh2 Qh4+ $11) 26... Be6 27. Qxb7 ({And not} 27. Qxe6 Qxc1 28. Qf5+ Kg8 $11) 27... Rc8 28. Rf1 ({Weaker is} 28. Rxc8 Qh4+ 29. Kg1 Qe1+ 30. Kh2 Qh4+ 31. Kg1 Qe1+ 32. Kh2 Qh4+ $11) (28. Qe4+ $1 $18 {and the rest is easy.} Bf5 29. Rxc8 Bxe4 30. fxe4) 28... Rc2 {[%csl Gc2][%cal Rg5g2] [#]} 29. f4 $1 { [%cal Rf4g5]} Qg4 (29... Qh5+ $14 {deserves consideration.} 30. Kg1 Qg4) 30. b4 ({Don't play} 30. Kg1 $6 Bf5 $11) ({Better is} 30. f5 $16 Bc8 31. Qf3 Qxf3 32. Rxf3 Rxb2 33. d5) 30... Rxa2 31. Kg1 Rd2 (31... Bf5 $11) 32. Ra1 (32. f5 $14 Bc4 33. Qf3 Qxf3 34. Rxf3) 32... Qg3 (32... a6 $11 {remains equal.}) 33. Qe4+ ( {White should try} 33. Qf3 $16 Qxf3 34. gxf3) 33... Kg8 $14 34. f5 (34. Bxg7 $14 Qf2+ 35. Kh1 Qh4+ 36. Kg1 Kxg7 37. Rxa7+ Bf7 {[#]} 38. Rxf7+ $1 {[%mdl 512] } Kxf7 39. Qd5+ Kg6 40. Qg8+ Kh5 41. Qf7+ Kg4 42. Qe6+ Kxf4 43. Qe5+ Kg4 44. Qe6+ Kh5 45. Qf7+ Kg5 46. Qe7+ Kh5 47. Qf7+ Kg5 48. Qe7+ Kh5 49. Qf7+) 34... Qf2+ $11 35. Kh2 Bxf5 36. Qa8+ Kh7 {( -> ...Qh4+)} 37. Qb7 $132 {[%csl Ge5] [%cal Rb7g7][%mdl 2048] White has counterplay} Qh4+ 38. Kg1 {[%csl Ge5][%cal Rb7g7]} Qf2+ {The position is equal.} 39. Kh2 {[%csl Ge5][%cal Rb7g7]} Qh4+ 40. Kg1 {[%csl Ge5][%cal Rb7g7]} Qf2+ 41. Kh2 {Accuracy: White = 62%, Black = 68%.} 1/2-1/2