The task you want to set is a little challenging but Fritz 6 is up to the task of pointing out blunders.
More than the engine, what probably matters is the speed of your computer, the memory and so on.
If you really want confusion, compare Fritz results with the Chess.com analysis.
No, the title is not a typo.
I have an ancient copy of Chessbase. Its most recent engine is Fritz 6, which is a ~2000 era distribution. I used it to analyze one of my recent games. Is the analysis correct? I've heard about Stockfish, but I already have this installed and ready to go. The game and analysis is below.
{C24: Bishop's Opening: 2...Nf6} 1. e4 e5 2. Bc4 Nf6 {last book move} 3. Qf3
Bc5 4. Nh3 O-O 5. Ng5 (5. d3 $5 $11 {must be considered}) 5... h6 6. Nxf7 Rxf7
7. Bxf7+ Kxf7 8. Qb3+ d5 9. exd5 Nxd5 (9... Qxd5 10. d3 $17) 10. O-O (10. Nc3
Be6 11. Qxb7 Nb4 12. Qxa8 Nxc2+ 13. Kd1 Nxa1 14. Qf3+ Kg8 $15) 10... c6 (10...
Nc6 11. c3 $17) 11. Nc3 Be6 (11... Qb6 12. Qc4 Qb4 13. Qd3 $17) 12. Nxd5 Bxd5 (
12... Qxd5 $4 13. Qxb7+ Qd7 14. Qxa8 $18) (12... cxd5 $6 {is impossible} 13.
Qxb7+ Nd7 14. Kh1 $15) 13. Qxb7+ (13. Qh3 $5 $17) 13... Nd7 $19 14. b4 $4 {
White falls apart} (14. d3 Rb8 15. Qa6 Rb4 $17) 14... Bb6 (14... Bd4 15. c3 Rb8
16. Qxb8 Qg5 $19) 15. d3 (15. c4 $142 Bxc4 16. d3 $19) 15... Rb8 $4 {
releasing the pressure on the opponent} (15... a5 $142 {
and Black gets the upper hand} 16. c4 Ra7 17. Qxa7 Bxa7 18. cxd5 cxd5 $19) 16.
Qa6 $15 e4 (16... c5 $142 $5 {should be investigated more closely} 17. b5 c4
$15) 17. dxe4 $14 Bxe4 18. Rd1 (18. Bf4 $142 Bc7 19. Rad1 $14) 18... Bxc2 $4 {
not a good decision, because now the opponent is right back in the game} (18...
Qf6 19. Be3 (19. Rxd7+ $2 {looks very tantalising, but} Kg8 20. Qe2 Qxa1 $19)
19... Kg8 20. Bxb6 axb6 21. Qe2 $11) 19. Rd2 (19. Qc4+ $142 {
and the rest is a matter of technique} Kf8 20. Qxc2 $18) 19... Be4 $15 20. Qc4+
Bd5 21. Qf4+ Nf6 22. Bb2 Bc7 23. Qf5 (23. Qh4 $142 $5 $17) 23... Rxb4 $19 24.
Bc3 (24. Be5 Bb6 $19) 24... Rc4 25. Rc1 $2 (25. Be5 $19) 25... Qd6 26. Rdd1 (
26. Qh3 {there is nothing better in the position} Qf4 27. Rcc2 $19) 26... Qxh2+
27. Kf1 Qxg2+ 28. Ke2 Be6 (28... Re4+ 29. Kd3 Rf4 30. Qxf4 Bxf4 31. Kc2 Qxf2+
32. Rd2 Bxd2 33. Bxd2 Be4+ 34. Kc3 Nd5+ 35. Kb2 Qxd2+ 36. Rc2 Qxc2+ 37. Ka3
Qc3+ 38. Ka4 Qb4#) 29. Rg1 Qxg1 $1 {Black should return material} 30. Rxg1 (30.
Qxe6+ {a fruitless try to alter the course of the game} Kxe6 31. Rxg1 Rxc3 32.
Rxg7 Bb6 $19) 30... Bxf5 (30... Rxc3 $6 {succumbs to} 31. Qg6+ Ke7 32. Qxg7+
Bf7 33. Re1 $15) 31. Bxf6 Kxf6 32. Rd1 Rc2+ 33. Ke1 Rxa2 34. Rc1 Ba5+ 35. Kf1
Be4 36. Rc5 Bb6 (36... Bb6 37. Rc3 Ra1+ 38. Ke2 Ba5 $19) (36... Ra1+ 37. Rc1
Rxc1+ 38. Ke2 Re1#) 0-1