Ambush!

It was released under Avalon's Victory Games label and was developed by Eric Lee Smith and John Butterfield.

It accomplished this via tables, charts and a "paragraph book" which the player referred to see how the opponent was reacting.

Some chits contained question marks or otherwise hid what was actually on the space, but the opposing player knew where likely areas for the enemy were.

Players, then, were usually required to purchase Avalon Hill's expansion modules in order to play additional scenarios.

was released by Victory Games which put the player in command of US tanks in WW II.

[3] While not the first boxed solitaire board wargame to be produced (Avalon Hill's B-17, Queen of the Skies had preceded it in 1983), Ambush!

While the additional modules are testament to this successful design, the concept also appears to have been validated by Ambush!, as a fair number of other purpose-designed solitaire games (as opposed to two player games that "could" be played solitaire) followed it shortly after.