Không rõ —
Xu Yinchuan's Winning Games at the 6th World Championship (Annotated by Hu Ronghua) #54
Sacrifice Observation Method · Central cannon vs left three-step tiger to opposite cannons — red left direct chariot
Sacrifice Observation Method · Central cannon vs left three-step tiger to opposite cannons — red left direct chariot
Sacrifice Observation Method · Central cannon vs left three-step tiger to opposite cannons — red left direct chariot
Cantong Linglei Ji · Central cannon vs left three-step tiger to opposite cannons — red left direct chariot