There is an alternative solution, although it is a bit longer, but the tactical motif can be spotted easier:

1.48-42 37x48 2.17-12 7x18 3.15-10 5x14 4.44-39 48x34 5.35x4 18-22 6.4x27 36-41 7.27-31 41x21 8.25-20 21-27 9.20-14 27-32 10.14-10 32-38 11.10-5 38-43 12.5-46

Very interesting and clever find Kalnap! The puzzle will be disabled, thnx!

Personally, i think your variation is harder to spot btw.