不分胜负bù fēn shèng fù

a dead heat; a drawn battle; (result/end) in a draw (/tie); (of a game)tie (/break/draw/come out) even; it cannot be told who is the victor and who vanquishes; neither side has the better of the other
❍ 那怪与行者斗了十数回合，～，渐渐红日当午，……(《西游记》230) That monster fought with pilgrim for more than ten rounds. They fought until about noon,but the battle was a draw.

不分胜负bù fēn shènɡ fù

分不出输赢。come out even, dingdong, tie, even(game), be all square