HARD (ER) KANJI - JLPT 2 KYUU

A shell [] with a hat means to lose
おう to bear; to be indebted to ける to lose; be defeatedかす to beat; defeat
勝負 shou bu - a match, contest, bout
負け make - a defeat
根負け kon make - to run out of patience; to give up due to being out-done