3e SRD:Great Sunder
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Great Sunder [Psionic]
Prerequisite: Str 13+, Power Attack, Sunder, reserve power points 5+.
Benefit: When the character strikes at an opponents weapon, he or she ignores half of the weapons total hardness (round down). Total hardness includes any magical or psionic enhancements possessed by the weapon that normally add to its hardness. However, to strike and do any damage to a magically or psionically enhanced weapon, the character still needs a weapon of equal or better enhancement.
Special: A character can also sense the stress points in any hard construction, such as wooden doors or stone walls, and can ignore half of the objects total hardness (round down) when attacking that object.