White ones hide the least

SELECT * FROM gallery2 WHERE topic_id="1522384" UNION SELECT * FROM gallery2 WHERE topic_id="893053" UNION SELECT * FROM gallery2 WHERE topic_id="744034" UNION SELECT * FROM gallery2 WHERE topic_id="1188817" UNION SELECT * FROM gallery2 WHERE topic_id="1170424" UNION SELECT * FROM gallery2 WHERE topic_id="1696526" UNION SELECT * FROM gallery2 WHERE topic_id="486838" UNION SELECT * FROM gallery2 WHERE topic_id="456365" UNION SELECT * FROM gallery2 WHERE topic_id="1076183" UNION SELECT * FROM gallery2 WHERE topic_id="679552" UNION SELECT * FROM gallery2 WHERE topic_id="929590" UNION SELECT * FROM gallery2 WHERE topic_id="980362" UNION SELECT * FROM gallery2 WHERE topic_id="1075828" UNION SELECT * FROM gallery2 WHERE topic_id="276645" UNION SELECT * FROM gallery2 WHERE topic_id="1558355" UNION SELECT * FROM gallery2 WHERE topic_id="1395521"