River crossing puzzle – Nguyen Thuy Vy

[Prolog] Missionaries and Cannibals – M Missionaries & C Cannibals & Boat carries N passengers version

In the missionaries and cannibals problem, three missionaries and three cannibals must cross a river using a boat which can carry at most two people, under the constraint that, for both banks, if there are missionaries present on the bank, they cannot be outnumbered by cannibals (if they were, the cannibals would eat the missionaries). [...]

[Prolog] The Three Jealous Men and Their Wives

Three men, travelling with their wives, came to a river which they wanted to cross. The one available boat would accomodate only two people. Since the husbands were very jealous, no woman could be with a man unless her own husband was present. Under these severe handicaps, how can they get across the river using [...]