Interesting 1-move tsume shogi

I am planning to publish a “1-move tsume shogi collection” in the future. For that purpose, I’m making and tweeting 1-move tsume shogi problems.

In the tsume shogi above, Which movement do you think is the right answer?

The answer is…

+R-69 is the correct answer.

After the answer figure, Gote can’t drop either N*49, L*49, or P*49. Because these movements are illegal moves.

Like this, I’ve created 111 tsume shogi problems and published the book.

Tsume Shogi: 1-move checkmate 111 problems

See also:

About this app…

Piyoshogi — The best Shogi app for beginners

About illegal moves…

Shogi Rules — An overall explanation of Japanese Chess