Key facts: Kansas will contests must be filed within 6 months of probate admission under K.S.A. 59-2224; standing is limited to interested persons with direct financial interest; valid grounds include lack of testamentary capacity, undue influence, fraud, duress, and improper execution; wills must comply with K.S.A. 59-606 signing and witnessing requirements; estates over $50,000 require formal probate proceedings; and contestants bear the burden of proof by preponderance of the evidence.