28-22 iso 28-23 in the end of the line also winning.

6.22-18 is also winning

Also winning is 4.39-33, 5.37-31, 6.38-32 7.40-34

Also winning are 1.39-34 and 1.45-40 with the same idea

Also winning is 4.39x30 5.37-32 and 6.40-35, though I agree the white pieces are better placed after the accepted line 5.40x29.

Though the proposed solution (1.27-21 2.28-23) is optimal, the suboptimal solution 1.28-23 is also clearly winning. Hence, I do not think this is a great puzzle.

Also winning is 4.49-43! 5.43x34

(Should be puzzle 1487*)

After 2.37-31 4.33-29 5.43-39 it is also possible to play 6.39-33 and 7.41-37 iso 6.41-37 and 8.39-33 etc.

7.38-33 8.43x32 is also winning