Game #1 move #49 {5, 4}: Player 2 is on square 19
Game #1 move #50 {5, 3}: Player 1 is on square 84
Game #2 move #1 {5, 5}: Player 2 is on square 29

expected:<Player [1 is on square 10]> but was:<Player [2 is on square 29]>

please explain what happened here.
the game is not over yet

That's JUnit telling you where two strings are different, the brackets aren't part of the strings.

"expected:<[]brrtnmdttqmutezxgc>
but was:<[rphbnsryttrfj]brrtnmdttqmutezxgc>"

that is, parentheses and other characters are also considered delimiters?