How to write solutions in the rated competitions
a) in direct mate problems: all moves in all variations of full length which defend against the threat, including the threat if it is of full length, except the last move of Black and the mating move (i.e. in twomovers only the key; in threemovers all three-move variations, including the full length threat, up to the second white move, etc.) If there is no threat at all or an existing threat of full length is not written, all variations of full length are to be given.
b) in selfmate problems: all moves except the mating move in all variations of full length which defend against the threat, including the threat if it is of full length. If there is no threat at all or an existing threat of full length is not written, all variations of full length are to be given.
c) in helpmate problems: all moves.
d) in studies: all moves up to an obvious win or draw.
In helpmate(s) for which more than one single solution is indicated the solver has to give all requested single solutions for a complete solution. In all other problems and studies only one solution is to be given.
The correct and complete solution of a problem scores 5 points. An incomplete solution scores fewer points. Incorrect or incomplete variations or single solutions score 0 (zero) points. If more than the required number of solutions for a particular problem is written, it is enough that one of the solutions is incorrect for the solver to score 0 (zero) points for this problem. If more than one continuation following a defence (or more than one threat) is written, it is enough that one of them is incorrect for the solver to score 0 (zero) points for this variation (threat).