คู่ต่อสู้ของอานันท์คือใครในแมตช์ด้วย 20 กระบวนท่าที่เปิดด้วย E15 Queen's Indian Defence?ไม่จำเป็นต้องใช้โต๊ะทั้งหมด
Who was the opponent of Anand in the match with 20 moves that opened with E15 Queen's Indian Defence?It is not neccessary to use all the tables.
 table_12970:  "White" [ text]  "Black" [ text]  "Year" [ real]  "Result" [ text]  "Moves" [ real]  "Tournament" [ text]  "Opening" [ text] 
SELECT "Black" FROM table_12970 WHERE "White" = 'anand' AND "Moves" = '20' AND "Opening" = 'e15 queen''s indian defence'