The object of the game is to advance the captain to the center of the board
(marked as a red dot) through the 17-step outlined path
An optional rule to winning is for one player to advance their captain three spaces
further along the outlined path than the other player.
The captain can advance one step at a time to an unoccupied point on the outlined path.
The captain also cannot capture enemy pieces.
The guards can move orthogonally or diagonally one space at a time onto an empty point.
The guards can capture by jumping over an adjacent enemy guard in an orthogonal direction
and landing on a vacant point on the other side.
Captures are mandatory. Multiple captures are allowed.
Guards cannot capture the captain, but they can block its path.
The guards cannot enter the red dot.
All 18 pieces are placed in the first two ranks of each player's side.
The captain is placed at the center of the first rank.
Blue and Gray is a two-player strategy board game invented by Henry Busch and Arthur Jaeger in 1903.
They obtained a patent for the game, but may never have published it.
Blue and Gray was featured in the book A Gamut of Games (1969) by Sid Sackson.