Fair and square

We won the game fair and square.

Source: wiktionary

He said they give licenses now to steal — steal folks'es senses away, and then they would steal every thing else, and murder, and tear round into every kind of wickedness. But he didn't ask that. He wanted things done fair and square: he jest wanted to steal horses. He was goin' West, and he thought he could do a good business, and lay up something. If he had a license, he shouldn't be afraid of bein' shot up, or shot.

Source: wiktionary

They had crawled in and staked the land and stood ready to shoot those of us who came in, fair and square, in the Run.

Source: wiktionary

For the "Most Accurate Assessment of an International Situation" the unanimous winner is the Republican U.S. Senate hopeful from California, S.E. Hayakawa. He said, "Of course we should keep the Panama Canal, we stole it fair and square."

Source: wiktionary