You can play Roller here:-
The "kr/s" figure is showing thousands of complete rollouts (random games) per second.
Interestingly when pitted against a true random mover version of itself, Roller wins all of the games, other than sometimes accidentally falling into 3-fold repetition because it does not know that rule.
Roller can be used in Arena etc like Lozza.
If rollouts last longer than 450 ply, a draw is assumed, as some crazy games can last longer than 1000 ply. This does kinda of compromise the no-knowledge (or "zero") element, but I can live with it.
It does not terminate at known draws like KK for example, because that is definitely feeding in knowledge; however tempting it is to do so in the name of kr/s.
You can change the number of seconds Roller takes to move from the entry field above the board, which by default is 10s.
While thinking Roller displays a status above the board of the form:-
time so far (seconds) |
thousands of rollouts (games) so far |
thousands of rollouts per second so far |
best move so far
After moving Roller displays the net score and number of rollouts for each legal move, for example:-
e6 9 / 1150
d5 31 / 1192 ****
d6 -8 / 1197
**** depicts the best score and the move chosen.