However, eUCT did not improve the proportion of solved molecules. Both dUCT-v2 and eUCT achieved higher solve rates for time-based testing and all enhancements showed improvements in the number of routes to a target molecule (Table ). dUCT-v1 achieved the largest uplift against the default for the number of routes to the target, with at least a 30% increase across all time constraints. Therefore, dUCT-v1 yielded the highest RCS for all enhancements (Figure ). Furthermore, for a given time, all enhancements reached larger iteration counts than UCT. The most impressive iteration increase was once again from dUCT-v1, which performed over double the number of iterations than UCT (Figure ). The number of iterations is positively correlated to the number of solved molecules, and enhancements which allow more iterations will be beneficial for retrosynthesis. Reducing the clock-time directly reduces the computational carbon footprint.