So recently I was looking for punching bags for some stronger engines I've been playing with and around the same time read Frank Q's "Dragon 4.6 is a very positional program" as well as notes about Quark being tactical.
They are both around 2400 at CCRL blitz, so I loaded them up and played a couple of 1+1 games (bullet vs engines is silly, but I was only "style testing").
Here are the interesting losses I managed. Both as black.
Dragon 4.6 (2417) vs Brendan 1-0
[pgn]
[Event "1+1 Bullet"]
[Site "?"]
[Date "2020.11.27"]
[Round "?"]
[White "Dragon 4.6"]
[Black "Norman"]
[Result "1-0"]
[ECO "C41"]
[WhiteElo "2417"]
[PlyCount "67"]
[EventDate "2020.??.??"]
1. d4 d6 2. e4 Nf6 3. Nc3 Nbd7 4. Nf3 e5 5. Bc4 Be7 6. O-O h6 7. dxe5 dxe5 8.
Qe2 c6 9. a4 Qc7 10. Be3 Ng4 11. Bd2 Nf8 12. h3 Nf6 13. Rad1 Rh7 14. Rfe1 g5
15. Be3 Ng6 16. Qd3 Nf4 17. Bxf4 gxf4 18. Nh4 Rg7 19. Rd2 Bd7 20. Nf5 Bxf5 21.
exf5 Rd8 22. Qe2 Rxd2 23. Qxd2 f3 24. g3 Kf8 25. Qxh6 Bc5 26. Qh8+ Ng8 27. Ne4
Bb6 28. Qh5 Qd8 29. Qxf3 Nf6 30. a5 Bc7 31. Rd1 Qe7 32. Nxf6 Qxf6 33. Rd7 Bxa5
34. Qa3+ 1-0
[/pgn]
I was doing very well in that one, but the wheels fell off as I started to get low on time.
Here's the game against Quark 2.35.
Quark 2.35 (2423) vs Norman 1-0
[pgn]
[Event "1+1 Bullet"]
[Site "?"]
[Date "2020.11.26"]
[Round "?"]
[White "Quark 2.35"]
[Black "Norman"]
[Result "1-0"]
[ECO "C16"]
[WhiteElo "2423"]
[PlyCount "59"]
[EventDate "2020.??.??"]
1. e4 e6 2. d4 d5 3. Nc3 Bb4 4. e5 b6 5. Qg4 Bf8 6. Nh3 Bb7 7. Be3 Qd7 8. Be2
Nc6 9. O-O Nge7 10. Ng5 Nf5 11. Bd3 h6 12. Bxf5 exf5 13. Qh5 hxg5 14. Qxh8 f4
15. Qh5 fxe3 16. fxe3 Nd8 17. Qxg5 Ne6 18. Qh5 g6 19. Qh7 Ng5 20. Qh4 Be7 21.
Qh8+ Bf8 22. h4 Ne6 23. Qg8 c5 24. Nb5 Nd8 25. Nd6+ Ke7 26. Rf6 Ba6 27. Rxf7+
Nxf7 28. Qxf7+ Kd8 29. Qxf8+ Kc7 30. Qxa8 1-0
[/pgn]
What I like about these engines is that you can see that they both have distinct styles and also that I actually
had a chance.
I feel like at long time controls I would probably still lose, but only after a long fight.
So I recommend these guys as sparring partners.