Rules
Toads and Frogs is played on a 1 × n strip of squares. At any time, each square is either empty or occupied by a single toad or frog. Although the game may start at any configuration, it is customary to begin with toads occupying consecutive squares on the leftmost end and frogs occupying consecutive squares on the rightmost end of the strip.
On his turn, Left may move a toad one square to the right if it is empty. Alternatively, if a frog occupies the space immediately to a toad's right, and the space immediately right of the frog is empty, Left may move the toad into that empty space; such a move constitutes a "hop". Toads may not hop over more than one frog, nor are they allowed to hop over another toad. Analogous rules apply for Right: on a turn, he may move a frog left into a neighboring empty space, or hop a frog over a single toad into an empty square immediately to the toad's left. As usual, the first player to be unable to move on his turn loses.
Read more about this topic: Toads And Frogs (game)
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