WHITE. BLACK.
4. B to B 4 4. B to R 5: ch.
5. K to B sq. ...
This is the best move, which should give the advantage to White. Less
favourable is Cunningham's own line of play: 5. P to K Kt 3, P takes P;
6. Castles, P takes P: ch.; 7. K to R sq., P to Q 4, 8. B takes P, Kt
to K B 3; 9. B takes P. ch., K takes B; 10. Kt takes B, R to B sq.; 11.
P to Q 4, K to Kt sq., with a good game for Black.
5. ... 5. P to Q 4
6. B takes P 6. Kt to K B 3