1. Any piece may move from one square to another in a right line, as
from _a_ to _c_; but not corner-wise, or from _a_ to _e_.
2. It is not allowed to pass over the heads of any other pieces that
may be in the way, or to move, for instance, from _b_ to _m_, in case
any were stationed at _e_ or _i_.
3. If the king should stand in _b_, and no other piece in _e_, _i_, or
_m_, he may escape by that road, unless one of the Muscovites
immediately gets possession of one of the squares in question, so as to
interrupt him.