__optimal play__: The score from this game was printed in The Daily Telegraph, Saturday August 19, 1905, page 10White: T. M. Bradshaw.

Black: Spen. Crakanthorp.

01. P to Q 4 ; P to Q 4

02. P to Q B 4 ; P to K 3

03. Kt to Q B 3 ; Kt to K B 3

04. B to B 4 ; B to Kt 5

05. P to Q R 3 ; B takes Kt ch

06. P takes B ; Castles

07. Kt to B 3 ; P takes P

08. Q to B 2 ; P to Q Kt 4

09. P to K 4 ; B to Kt 2

10. P to K 5 ; Kt to Q 4

11. Kt to Kt 5 : P to Kt 3

12. B to Q 2 ; Kt to Q 2

13. P to K R 4 ; K to Kt 2

14. P to R 5 ; R to R sq

15. Kt to B 3 ; P to Q B 4

16. B to Kt 5 ; Q to R 4

17. P to R 6 ch ; K to B sq

18. K to Q 2 ; P takes P

19. Kt takes P ; Kt takes K P

20. R to Q Kt sq ; P to R 3

21. P to B 4 ; Kt to Q B 3

22. Kt takes Kt ; B takes Kt

23. Q to Kt 2 ; P to B 3

24. B to R 4 ; R to Q sq

25. K to K 2 ; Kt takes Q B P ch

26. K to B 2 ; R to Q 7 ch

And White resigned.

https://trove.nla.gov.au/newspaper/...

The 25th move is clearly Kt takes Q B P ch (25...Nxc3+)

This confirms <Sally Simpson>'s assumption that it must have been the c-pawn (ie Queen's Bishop's Pawn)
which was captured by the Knight, and not the f-pawn (ie King's Bishop's Pawn).

This game is from the 5th round of the New South Wales state championship played in Sydney on 18th August 1905.

The final standings were:-

Spencer Crakanthorp 9/10

William Henry Jonas 7/10

Thomas Mason Bradshaw 5/10

George W Baynes 4/10

Henry Taylour 3½/10

J Spedding 1½/10