noun
test of strength; test of ability; trial of skill
Used when someone tries out their physical strength, skill, or ability against a challenge, opponent, or task. Often implies a personal challenge or a way to gauge one's own level.
新しいゲームで力試しをしてみた。
I tried my hand at the new game to test my skills.
彼は腕相撲で力試しをしたがった。
He wanted to test his strength in an arm-wrestling match.