Miura Yasuyuki wrote : "Nakayama created a ladder problem especially for me. ... He kindly gave me a few hints: JAL has to fly high above on the board. Black on the border at the right of the "L" captures the 23 white stones in the corner. If White resists, it results in a ladder that flies all over the board. Two black stones are waiting for you to arrive safely at the final destination in the lower-left corner. ... The lower-left corner is not only the destination but also the turn-around point. Have a nice flight."