The “book” on Fritz 20 is, “Yes, (it is) largely succeeds in playing like specific, configurable personalities by deliberately reducing tactical precision to mimic human decision-making, positional preferences, and weaknesses.”
During the following game I ignored the hints the program suggested and simply plated my own game. Honestly, I don’t know how Morphy-like the program played, but I never saw any tactics or traps from the program nor did I ever feel like I was in any danger of losing. “Morphy” seemed to play a pretty passive game. Also, I cannot explain the horrible blunder on move 34. 
One thing is clear though. If you are interested in training and practicing against a fairly realistic environment then Fritz 20 (or even Fritz 19 which does not have the historic players) then it is an entertaining program that is well worth the price. (Note: I have no financial interest in ChessBase products.)
[Event "Fritz 20 Personality"]
[Site "?"]
[Date "2026.??.??"]
[Round "?"]
[White "Tartajubow"]
[Black "Paul Morphy (Personality)"]
[Result "1-0"]
[ECO "C55"]
[Annotator "Stockfish 17.1"]
[PlyCount "115"]
[EventDate "2026.01.29"]
{C55: Two Knights Defense} 1. e4 e5 2. Nf3 d6 {I am not familiar with Morphy's
play, but this lools like something he might have played.} 3. Bc4 Be7 4. O-O
Nc6 5. c3 Nf6 6. Re1 {White usually plays 6.d3} O-O (6... Nxe4 {This looks
more like a Morphy move than the text.} 7. Rxe4 d5 {This position is
tactically tricky!} 8. Nxe5 (8. Re1 dxc4 9. Nxe5 Nxe5 10. Rxe5 O-O {White has
some problems trying to get developed so black is better.}) 8... Nxe5 (8...
dxe4 9. Nxf7 {wins}) 9. Bb5+ Bd7 {with a completely equal position.} 10. Rxe5
Bxb5) 7. d4 {[%mdl 32] Again, white almost always plays 7.d3} Bg4 {The threat
is ...Bxf3 removing the guard from the d-Pawn, so white does not have much
choice/} 8. d5 Nb8 {Here I was not happy with my position. It's closed and so
tactics are at a minimum which is probably a good thing against the Morphy
personality, but the bad B and lack of attacking prospects is a downer.} 9. h3
(9. Nbd2 c6 10. Nf1 Nbd7 11. h3 Bxf3 12. Qxf3 cxd5 13. exd5 Rc8 14. Ne3 g6 15.
Bb3 {is about equal. Vykouk,J (2445)-Dolezal,R (2396) Liga Zapad Czech
Republic 2015}) 9... Bh5 {Should I play 10.g4 risking that black will
sacrifice a piece?} (9... Bc8 10. Bf1 h6 11. c4 Nbd7 12. Nc3 a5 {White is
slightly better. Niephaus,W-Witkowski,S Heidelberg 1949}) 10. Bd3 {It would
have been OK to play 10.g4 because any sacrifice would not have been quite
correct...black has no followup to het to the white K.} h6 11. Nbd2 Nbd7 12. g4
{Played after coming to the conclusion that there is no other way of making
progress.} Bg6 13. Nh4 a5 {Oddly, this is not a bad move, but it came as a
total surprise.} (13... Bh7 {was what I expected.} 14. Nf5 {I would not expect
black to play 14...Bxf5 which allows the opening of the g-file, but Stockfish
finds ni fault with it. Evidently, black can defend any attack on the g-file.
Equally good would be counterattacking in the center with 14...c6}) 14. Nxg6 {
I was surprised to find that Stockfish disapproves of this move, It wants me
to play 14.Nc5. It now considers black's position to be more promising.} fxg6 {
There is no way to take advantage of the doubled Ps, so I decided to improve
the position of my N.} 15. Nf1 {Now black should play ...Nh7 and ...Bg5
eliminating the dark squared Bs/ Instead, the next move is rather aimless as
black's opportunities on the Q-side are limited.} a4 16. Ng3 Nh7 17. Be3 Ng5
18. Bxg5 Bxg5 19. Qc2 {The idea is to connect the Rs and hopefully open the
h-file.} Qf6 20. Rf1 h5 {[%mdl 512] I thought this was a mistake, but the
auto-analysis by Fritz gave it a ! and black is better by about 1.75 Ps.} 21.
f3 Be3+ 22. Kg2 Bf4 23. Ne2 Qh4 {This is hardly bad, but keeping the B woth 23.
..Be3 was a bit better.} 24. Nxf4 {Happy to eliminated the B!} exf4 25. Qf2
Qxf2+ {Keeping Qs on with 25...Qe7 was a bit better.} 26. Kxf2 Ne5 27. Be2 {
White is weak on the dark squares and the B is useless. If 27.Rac1 there would
be no chance that blacl would make the mistake of exchanging his good N for it.
It’s a miracle that the B actually makes a major contribution to winning the
game.} hxg4 28. hxg4 g5 29. Rh1 Rfb8 30. Rh5 {At long last...counterplay
against the weak g-Pawns!} Ra5 31. Rah1 (31. Rxg5 {is a bad mistake.} g6 {
and the R is trapped.}) 31... Kf7 32. Rh8 Rxh8 33. Rxh8 {[%mdl 4096] Here I
was confident that with the R behind enemy lines I would not lose the game and
might even win. Actually, the position is equal.} b6 34. Rc8 {I cannot explain
black's next move which loses outright. 34...Ra7 draws.} Ke7 {[%mdl 8192]} 35.
Rxc7+ Kf8 36. Rb7 b5 37. Rxb5 Rxb5 {Keeping the Rs on would have held out
longer.} 38. Bxb5 a3 39. bxa3 Ke7 40. a4 g6 41. a5 Kd8 42. a6 Kc8 43. Bc6 Kb8
44. Bb5 Kc7 45. a4 {[%mdl 32]} Kb6 46. a5+ Ka7 47. Be2 {To free the K to
advance to the Q-side.} Nd7 48. Ke1 Ka8 49. Kd2 Ne5 50. Kc2 Kb8 51. Kb3 Kc7 52.
Kb4 Kb8 53. c4 Nd7 {Wards off c5} 54. Kb5 Kc7 55. a7 {Sacrificing the P to
allow the K to penetrate.} Kb7 56. a8=Q+ Kxa8 57. Kc6 Nf6 58. Kxd6 {Here I
resigned for black. Unfirtunately you cannot resign for your opponent in a
real game.} 1-0
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