He didn't deny being at the party, or knowing her. She was still anonymous at the time he made his statement so he couldn't.
This the trap, if, now that her name is known, you get someone else able to say there was a party that they both attended, then it tends to support her, and undermine him, even though it says nothing about the actual facts in the bedroom.
All they need to do is get him to admit he acted inappropriately and force him to withdraw his nomination.
And the Rats and fake news media will begin the scrim to ensure it happens.
Wait and watch.
There’s no trap here. The Democrats deliberately waited until after Kavanaugh testified before releasing this allegation, so he doesn’t even have to answer any questions about it at all.