Hitachi Number 840
Minoru Harada's No. 840 (2012 May 28) elementary problem.
This problem contains a small mistake: One white stone is missing in the original diagram, but present in the solution diagram.
Minoru Harada's No. 840 (2012 May 28) elementary problem.
This problem contains a small mistake: One white stone is missing in the original diagram, but present in the solution diagram.