If the problem is difficult then you can have a database of intermediate positions saved after the computation and which has to be re-loaded for the next computation. This speeds up further runs. Storing the data base and loading in later runs can also be useful if the maximal computation time is too short and the problem is simply submitted again. Any problems or errors that you encounter can be submitted easily. SGF data You can type in the position of the board, the aim and who moves next in SGF format in this window.
Letters go from left to right and numbers from bottom to top.
A8D9 using the letters A to T without I, upper or lower case. The remaining input below the submit button is optional. This makes it simpler to explore a problem. You save having to delete and afterwards to add captured stones in the above board position. The color of the first move in this sequence is the one you specified above.