How to jQuery select <td> with only a checkbox in it

The Goal I want to select `<td>` elements that contain only a checkbox. I want to do this with a single selector (not using chaining or logic outside the selector) so that I can use the selector with jQuery functions like `live` or `delegate`. The bigger pictures is that I want to listen for a click event on these `<td>`s and pass the click event on to the checkbox, thus creating a larger clicking area. This is important, because the `<tr>` also has a different click event that I don't want to activate when users click and miss the checkbox. The specifics I created a jsfiddle with an example scenario: http://jsfiddle.net/ytA3X/ This is what I started with that is not working. In other words, select any td element that has a checkbox but does not have anything that is not a checkbox. ``` $('td:has(:checkbox):not(:has(:not(:checkbox)))') => [] ``` `:not(:has(...))` works in my jsfiddle example. `:has(:not(...))` works in my jsfiddle example. `:not(:has(:not(...)))` always seems to select nothing. Is there a different way that I can select td elements with only a checkbox, or am I doing something wrong?