首攻D8。这个打牌过程link不知能不能看到。

https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=st%7C%7Cmd%7C3SJ7HAKT6DK74CKQJ3%2CSKQ53HQJ753D8CT84%2CSA9864H842DA9C972%2CST2H9DQJT6532CA65%7Csv%7C0%7Cah%7CBoard%201%7Cmb%7CP%7Cmb%7C3D%7Can%7CPreempt%20--%207%2B%20%21D%3B%205-9%20HCP%3B%20%21DQ%3B%206%2B%20total%20points%7Cmb%7C3N%7Can%7C2-5%20%21C%3B%202-5%20%21D%3B%202-5%20%21H%3B%202-5%20%21S%3B%2016-22%20HCP%3B%20stop%20in%20%21D%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CD8%7Cpc%7CD9%7Cpc%7CDT%7Cpc%7CD4%7Cpc%7CD6%7Cpc%7CD7%7Cpc%7CS5%7Cpc%7CDA%7Cpc%7CC2%7Cpc%7CC6%7Cpc%7CCQ%7Cpc%7CC4%7Cpc%7CCJ%7Cpc%7CC8%7Cpc%7CC7%7Cpc%7CCA%7Cpc%7CC5%7Cpc%7CCK%7Cpc%7CCT%7Cpc%7CC9%7Cpc%7CC3%7Cpc%7CH3%7Cpc%7CS4%7Cpc%7CH9%7Cpc%7CHK%7Cpc%7CH5%7Cpc%7CH2%7Cpc%7CDQ%7Cpc%7CDK%7Cpc%7CH7%7Cpc%7CS6%7Cpc%7CDJ%7Cpc%7CH6%7Cpc%7CHQ%7Cpc%7CH4%7Cpc%7CD2%7Cpc%7CHJ%7Cpc%7CH8%7Cpc%7CD5%7Cpc%7CHA%7Cpc%7CHT%7Cpc%7CS3%7Cpc%7CS8%7Cpc%7CS2%7Cpc%7CS7%7Cpc%7CSK%7Cpc%7CSA%7Cpc%7CST%7Cpc%7CS9%7Cpc%7CD3%7Cpc%7CSJ%7Cpc%7CSQ%7C