This is a list of Battle Chess submissions, significant as all of these submissions occurred within a span of a few days. Eight of the ten of them occurred within 24 hours.

-#2768: Weirwindle's NES Battle Chess "Fastest Mate" in 04:19.54 NewPPU:
Weirwindle

player vs. CPU (Novice), 3D
Standard
1. h3 e5
2. Nf3 Nc6
3. d4 Nxd4
4. Nxe5 Bc5
5. e3 Nf5
6. Bc4 f6
7. Qd5 fxe5
8. Qf7#

This was intended to be a significant milestone in computer chess TAS research. However, someone failed to do the research, as the sequence below was well-known in this forum already.

-#2769: adelikat's NES Battle Chess "Fastest Mate" in 02:53.35 OldPPU:
adelikat

player vs. CPU (Novice), 3D
Standard
1. e4 e5
2. Qh5 Nc6
3. Bc4 Nh6
4. d4 exd4
5. Bxh6 gxh6
6. Qxf7#

-#2772: Weirwindle's NES Battle Chess "Fastest Mate" in 02:53.30 NewPPU:
Weirwindle

player vs. CPU (Novice), 3D
Standard

Same sequence as #2769: adelikat's NES Battle Chess "Fastest Mate" in 02:53.35, except using New PPU.

-#2773: adelikat's NES Battle Chess in 00:44.88 OldPPU:
adelikat

player vs. CPU (Novice), 2D
Standard

Same sequence as #2769: adelikat's NES Battle Chess "Fastest Mate" in 02:53.35, except done in 2D, which doesn't have those animations.

-#2774: adelikat's NES Battle Chess "Fastest Checkmate ever" in 00:16.61 OldPPU:
adelikat

player vs. CPU (Novice), 2D
Standard -WPe2 -BPf7 -BPg7
1. Qh5#

The first submitted set-up mate.

-#2775: adelikat & Weirwindle's NES Battle Chess "Fastest Mate Without Cheating" in 00:44.58 NewPPU:
Weirwindle

player vs. CPU (Novice), 2D

Same sequence as #2773: adelikat's NES Battle Chess in 00:44.88, except using New PPU. adelikat's name was pointlessly added as author sometime after.

-#2776: DarkKobold's NES Battle Chess "CHEATING RUL3Z!!!!!1111eleventy" in 00:14.08 OldPPU:
DarkKobold

player vs. CPU (Novice), 3D
Standard -WPb2 -WNb1 -WBc1 -BKe8 +BKb2
1. Qc1#

Faster due to using the black king to replace pieces rather than clicking them off the board during the set-up.

-#2777: Sonikkustar's NES Battle Chess "CH3AT1NG RUL3Z!!!!!1111eleventyfivemillionhundred" in 00:13.54 NewPPU:
Sonikkustar

player vs. CPU (Novice), 3D

Same as #2776: DarkKobold's NES Battle Chess "CHEATING RUL3Z!!!!!1111eleventy" in 00:14.08, but faster due to wrapping during the set-up, and New PPU.

-#2778: DarkKobold, Sonikkustar, Nach & Definitely NOT adelikat's NES Battle Chess "OMG CH34T3RZ ALWAYS PERSPIRE!!!!1111eleventy" in 00:13.49 NewPPU:
DarkKobold, Sonikkustar, Nach

player vs. CPU (Novice), 3D
Standard -WPc2 -WQd1 -BKe8 +BKc2
1. Na3#

First submitted mate delivered with something other than the queen.

-#2779: adelikat's NES Battle Chess "Fastest Checkmate!!!!!!!!!1111111111 P(a)wned" in 00:06.77 NewPPU:
adelikat

CPU (novice) vs. CPU (novice), 3D
Standard
1. e4 e5
2. Nf3 Nc6
3. Bc4 Nf6
4. Nc3 Bc5
5. O-O O-O
6. d3 d6
7. Nd5 Nxd5
8. exd5 Nd4
9. c3 Nxf3+
10. Qxf3 Bd7
11. b4 Bb6
12. Be3 Bxe3
13. Qxe3 b5
14. Bb3 c6
15. dxc6 Bxc6
16. Rfe1 a5
17. bxa5 Qxa5
18. d4 exd4
19. Qxd4 Rfd8
20. Rad1 d5
21. Qe5 Re8
22. Qd4 Qa7
23. Rxe8+ Bxe8
24. Bxd5 Qxd4
25. cxd4 Rc8
26. Bb7 Rd8
27. d5 Kf8
28. d6 Bd7
29. Re1 h6
30. Kf1 Bf5
31. Be4 Bxe4
32. Rxe4 Rxd6
33. Ke2 g5
34. Re3 f5
35. Kf3 g4+
36. Kf4 Rd5
37. Re5 Rxe5
38. Kxe5 Ke7
39. Kxf5 h5
40. a3 Kd6
41. h3 gxh3
42. gxh3 Kd5
43. f4 h4
44. Kg5 Ke4
45. f5 Ke5
46. f6 Ke6
47. Kg6 Kd7
48. f7 Ke7
49. Kg7 b4
50. f8=Q+ Ke6
51. Qxb4 Kd5
52. Kf6 Kc6
53. Ke6 Kc7
54. Ke7 Kc6
55. Qc4+ Kb6
56. Kd6 Ka5
57. Qb4+ Ka6
58. Kc6 Ka7
59. Qb7#

You didn't think there were loopholes? Anyway, the last move and animation (including king capture) is completed at 26 minutes and 13 seconds.