Originally posted by OrangeKingThat is exactly it. He has calculated that any opening leads to one of the 10 piece endgames if both players play perfectly. Of course there is little chance that both players will play perfectly so the game is still good for humans. The same would apply to chess if it was ever solved.
I think the game is technically not solved - the USA Today article: http://www.usatoday.com/tech/science/mathscience/2007-07-19-checkers-solved_N.htm
It merely says that:
Schaeffer's proof is what is called a "weakly solved" result. It calculates the result from an initial position — 10 pieces on the board — rather than from the beginning of the gam ...[text shortened]... it wrong and it's only solved for 10-pieces-or-less, which wouldn't shock me either.