During a recent Cluedo weekend, four games were played.
� In one game Miss Scarlet used the spanner, but not in the library.
� In another game the rope was used in the study, but not by Colonel Mustard.
� During one game the gun was used in the conservatory, whilst in another game Professor Plum was not to be found in the library.
� Colonel Mustard was never in the conservatory and Mrs White never used the rope.
� The lead piping may or may not have been used in the kitchen.
Can you determine who used what and where?