Contradiction with 1 Samuel 31:2
This verse describes the Philistines striking down Saul’s sons but does not specifically mention their defeat as happening before Saul's death, which can be seen as a contradiction in sequence.
1 Samuel 31:2: And the Philistines followed hard upon Saul and upon his sons; and the Philistines slew Jonathan, and Abinadab, and Malchishua, Saul's sons.
Contradiction with 1 Samuel 28:19
This verse foretells the defeat of Saul and his sons, suggesting it as an act of divine will, whereas 1 Chronicles 10:2 narrates it as a direct military consequence, implying different causes for their downfall.
1 Samuel 28:19: Moreover the LORD will also deliver Israel with thee into the hand of the Philistines: and to morrow [shalt] thou and thy sons [be] with me: the LORD also shall deliver the host of Israel into the hand of the Philistines.