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40becf6e66
We were using the result of Board.make_move!() to determine whether the current player could jump again. This worked by accident but was not part of the specified interface. I've changed the code to ignore the return value and instead query the move object itself.
Checkers
As published in Basic Computer Games (1978) https://www.atariarchives.org/basicgames/showpage.php?page=40
Downloaded from Vintage Basic at http://www.vintage-basic.net/games.html
The file checkers.annotated.bas contains an indented and annotated
version of the source code. This is no longer valid BASIC code but
should be more readable.
Known Issues In the Original BASIC Code
- If the computer moves a checker to the bottom row, it promotes, but leaves the original checker in place. (See line 1240)
- Human players may move non-kings as if they were kings. (See lines 1590 to 1810)
- Human players are not required to jump if it is possible.
- Curious writing to "I" variable without ever reading it. (See lines 1700 and 1806)