Here is the one beting Hamster in 10 piece handicap.
This is the line from the start to the end with some comments of mine.
Handicap: 10 pieces
1. ... K-4b
*The first move of K-4b is protecting the square of 3c preparing for your opening Bishop's diagonal line.
*You opened your Bishop's diagonal line. Please confirm it goes to the square of 3c.
*Second, you advanced Rook pawn. In shogi, Rook and Bishop are called Ohgoma(Major pieces). It is generally important to activate these major pieces to win a game.
*You advanced your Rook's pawn again to make it possible to float to 2f.
*You moved your Rook from 2h to 2f. The aim is to slide it to 3f to attack the square of 3c with two major pieces such as your Rook and Bisohp.
*Please confirm that the 2pieces such as your Bishop and Rook can go to the square of 3c while it is protected by only one piece such as your opponent's King. You have numerical advantage on the square of 3c.
*Your Rook took the pawn on 3c with getting promoted. It's also check. Since the Bishop on 8h supports the promoted Rook, then the King cannot take it.
*Checkmate. The king cannot take the promoted Rook since the Bishop on 8h still supports it.