Which element represents a backward element that can contribute to the scoring of UB?

The Tkatchev is recognized as a backward element in uneven bars routines and is valued for its difficulty and artistry. This skill involves a release move where the gymnast swings backward from the high bar to catch the bar again after performing a flip. It is essential for adding difficulty to a routine, as backward elements can enhance the overall composition of the gymnast's performance.

In the context of scoring on the uneven bars, judges look for a mix of skills, including both backward and forward elements, to assess the gymnasts' capability and execution. The Tkatchev not only demonstrates technical skill but also contributes significantly to the routine's connection and flow, which are crucial for achieving higher scores.