(After stating the foregoing facts.)
Code § 70-204 states in part as follows: “A new trial may be granted in all cases when any material evidence, not merely cumulative or impeaching in its character, but relating to new and material facts, shall be discovered by the applicant after the rendition of a verdict against him.” Extraordinary motions for a new trial based on newly discovered evidence are provided for in Code § 70-303. From the affidavits attached to the motion it appears that the defendant’s attorneys could not, in the exercise of all diligence, have discovered prior to the trial that the chief witness for the State had made prior contradictory statements which might have cast serious doubt on her credibility as a witness. It further appears that evidence that the defendant and the deceased did not leave the first room would have been material, since on the trial of the case the defendant contended that he shot the Harrison woman in an effort to protect himself against an assault by her, whereas it was the State’s contention that as she fled from- him to the back of the house he deliberately followed with the intention of killing her. Under Code § 38-1803, one method of impeaching a witness is by proving contradictory statements previously made by her as to matters relevant to her testimony and to the case. When this is done, the effect of the evidence and the credibility of the witness is entirely a matter for the jury to determine. See
Reed
v.
State,
163
Ga.
206 (
It has been frequently held that the ultimate criterion by which the merit of newly discovered evidence should be measured is the probability of a different result. See
McDaniel
v.
State,
74
Ga. App.
5 (
However, the excellent showing made might constitute a compelling reason for a tribunal invested with discretionary pow *417 ers such as the Pardon and Parole Board of this State, to take affirmative action which is beyond the purview of this court.
The trial court did not err in overruling the motion for a new trial.
Judgment affirmed.
