Can someone help me?

[janggi-korea]

Can you tell me how to remove pgn duplicate games?
It's not a chess pgn. This is Janggi pgn in Korea.
So the "pgn-extract" doesn't work.
Can someone help me?

ex) I prepared 3 samples of same pgn games. (The full list of games is very large.
)Delete duplicate games does not work on all chess gui such as chessbase or scid.

[Event "온라인 넷마블"]
[Site "넷마블 장기"]
[Date "2023-07"]
[Round "친선"]
[White "23651206ㅣyeng 9단"]
[Black "환구23 9단"]
[Result "0-1"]
[Variant "janggi"]
[FEN "reha1aehr/4k4/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/4K4/REHA1AEHR w 0 1"]
[SetUp "1"]
[PlyCount "68"]

{--------------
r e h a . a e h r
. . . . k . . . .
. c . . . . . c .
p . p . p . p . p
. . . . . . . . .
. . . . . . . . .
P . P . P . P . P
. C . . . . . C .
. . . . K . . . .
R E H A . A E H R
white to play
--------------}
1. Hd2 Hd7 2. Cg2 Ce7 3. Ke0 Ed6 4. Ade1 ef6 5. gf3 ab6 6. ih3 Ee6 7. cd3
Ra5 8. d4 Rg5 9. He4 Rc5 10. Ee2 Hf8 11. a4 f5 12. ab4 fe5 13. bc4 Rb5 14.
cb4 Rc5 15. dc4 Rd5 16. Cg8+ Ke9 17. Cg1 exe4 18. exe4 Cxe4 19. fe3 Ce7 20.
Cd1 Rg5 21. Hi2 ih6 22. Cd2 Afe8 23. Cxd7 Axd7 24. ef3 Rg2 25. Ee3 Exf3 26.
Exc6+ bxc6 27. Cf1 Ec3+ 28. Kd0 Exa0 29. Cxf8 Rixi2 30. Rxi2 Rxi2 31. Cf2
Cxh3 32. Cc2 Ri5 33. Cxc6 Rd5+ 34. Ke0 Cc3
0-1

[Event "온라인 넷마블"]
[Site "넷마블 장기"]
[Date "2023-07"]
[Round "친선"]
[White "23651206ㅣyeng 9단"]
[Black "환구23 9단"]
[Result "0-1"]
[Variant "janggi"]
[FEN "reha1aehr/4k4/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/4K4/REHA1AEHR w 0 1"]
[SetUp "1"]
[PlyCount "68"]

{--------------
r e h a . a e h r
. . . . k . . . .
. c . . . . . c .
p . p . p . p . p
. . . . . . . . .
. . . . . . . . .
P . P . P . P . P
. C . . . . . C .
. . . . K . . . .
R E H A . A E H R
white to play
--------------}
1. Hd2 Hd7 2. Cg2 Ce7 3. Ke0 Ed6 4. Ade1 ef6 5. gf3 ab6 6. ih3 Ee6 7. cd3
Ra5 8. d4 Rg5 9. He4 Rc5 10. Ee2 Hf8 11. a4 f5 12. ab4 fe5 13. bc4 Rb5 14.
cb4 Rc5 15. dc4 Rd5 16. Cg8+ Ke9 17. Cg1 exe4 18. exe4 Cxe4 19. fe3 Ce7 20.
Cd1 Rg5 21. Hi2 ih6 22. Cd2 Afe8 23. Cxd7 Axd7 24. ef3 Rg2 25. Ee3 Exf3 26.
Exc6+ bxc6 27. Cf1 Ec3+ 28. Kd0 Exa0 29. Cxf8 Rixi2 30. Rxi2 Rxi2 31. Cf2
Cxh3 32. Cc2 Ri5 33. Cxc6 Rd5+ 34. Ke0 Cc3
0-1

[Event "온라인 넷마블"]
[Site "넷마블 장기"]
[Date "2023-07"]
[Round "친선"]
[White "23651206ㅣyeng 9단"]
[Black "환구23 9단"]
[Result "0-1"]
[Variant "janggi"]
[FEN "reha1aehr/4k4/1c5c1/p1p1p1p1p/9/9/P1P1P1P1P/1C5C1/4K4/REHA1AEHR w 0 1"]
[SetUp "1"]
[PlyCount "68"]

{--------------
r e h a . a e h r
. . . . k . . . .
. c . . . . . c .
p . p . p . p . p
. . . . . . . . .
. . . . . . . . .
P . P . P . P . P
. C . . . . . C .
. . . . K . . . .
R E H A . A E H R
white to play
--------------}
1. Hd2 Hd7 2. Cg2 Ce7 3. Ke0 Ed6 4. Ade1 ef6 5. gf3 ab6 6. ih3 Ee6 7. cd3
Ra5 8. d4 Rg5 9. He4 Rc5 10. Ee2 Hf8 11. a4 f5 12. ab4 fe5 13. bc4 Rb5 14.
cb4 Rc5 15. dc4 Rd5 16. Cg8+ Ke9 17. Cg1 exe4 18. exe4 Cxe4 19. fe3 Ce7 20.
Cd1 Rg5 21. Hi2 ih6 22. Cd2 Afe8 23. Cxd7 Axd7 24. ef3 Rg2 25. Ee3 Exf3 26.
Exc6+ bxc6 27. Cf1 Ec3+ 28. Kd0 Exa0 29. Cxf8 Rixi2 30. Rxi2 Rxi2 31. Cf2
Cxh3 32. Cc2 Ri5 33. Cxc6 Rd5+ 34. Ke0 Cc3
0-1