CREATE TABLE table_203_651 (id DECIMAL, "year" DECIMAL, "competition" TEXT, "venue" TEXT, "position" TEXT, "notes" TEXT)

what was galina chistyakova 's last competition ?
SELECT "competition" FROM table_203_651 ORDER BY "year" DESC LIMIT 1
SELECT "competition" FROM "table_203_651" ORDER BY "year" DESC NULLS LAST LIMIT 1