Unconstrained Stochastic Scheduling (USS) - in this problem resources are also available in sufficient quantities and there is no need to hire any additional resources or to delay tasks due to the shortage of resources but the exact duration of each task is not known. Due to the uncertainty there is a need to monitor and control the project during its execution and to take corrective a c- tions when needed. In the Gantt chart the duration of each activity is the average of its three point time estimate (the average of the optimistic time, most likely time and the pessimistic time rounded to the nearest integer). The Gantt chart is used for planning and a control system is used for monitoring and control.