Tsume Shogi(詰将棋) can improve your game ending skill for Shogi play. I would recommend you solve as many problems as possible with 3 and 5 moves, or less than 9 moves tsume and then challenge yourself with more lengthy move problems (11,13,15 etc.,) But there is a crafty part of his checkmate solving puzzle.

Throughout the entire history of Shogi, Tsume Shogi has evolved into its own genre.

There are many tsume-problems that are 30~50 moves long. There are even few hundred moves tsume problems!

The longest tsumeshogi exists today is "Mikrokosmos" published in 1986. It is 1525 moves tsume. Several Shogi Engines verified only a single solution exists, meaning it's a perfect problem.

Hidetch has a video explaining the solution on YouTube.

How you enjoy these puzzles depends on your skill level. Some people just see the answer and enjoy the flow of the solution. Some people spend days and months trying to solve the problem. Many experts suggest you look at the solution if its too hard. Learning from these moves will still improve your overall Shogi skills.

The problem shown on the board below was a part of presentation made to Tokugawa Shogunate in 1755 A.C. by Ito Soukan the Third (三代伊藤宗看). The book's title is 将棋図巧 and this is listed as #30 problem. This particular problem is often dubbed as 神局（roughly Translated to 'God Play') It is 119 moves long, so, you as a beginner, just enjoy the flow.