Không rõ —
Fifty Years of Delayed Cannon #38
Central Cannon Opening Library - Fifty Years of Supplemented Column Cannon · 5-7 cannon mutual 7th pawns vs screen horses
Central Cannon Opening Library - Fifty Years of Supplemented Column Cannon · 5-7 cannon mutual 7th pawns vs screen horses
Central Cannon Opening Library - Fifty Years of Supplemented Column Cannon · 5-7 cannon mutual 7th pawns vs screen horses
300 Games of Zhao Guorong · 5-7 cannon mutual 7th pawns vs screen horses