Sometimes your advantage does not become clear until you reduce the number of pieces on the board. Basically – Simplify to Win .

Now instead of playing … Bb7+ and chasing the King around for another 25 moves the “easy way” was – Simplify to Win  eg.

1. … Rxe1  2.Rxe1 Rxe1  3.a4 Rc1  clear the way for the c pawn  4.a5 Rxc3  5.h4 Ra3  6.Kh3 c4  7.Kg4 c3  8.h5 c2  9.f4 c1Q  10.g4 Qh1#