Takumigo Jul 201 minThe mystery of 13 x 13The mystery of 13x13 Volume 4, (nearly) inmpossible choice in 19x19
Takumigo Jul 161 minThe mystery of 13 x 13The mystery of 13x13 Volume 3 How should white defend on the top right coner?
Takumigo Jul 151 minThe mystery of 13 x 13The mystery of 13x13 Volume 2 How should black limit white's efficiency