##################################################################
# montecarlo - Use montecarlo tree search (MCTS) if set to 1
# treeht - Maximum size of tree to store in memory given in MB.
# Note that this memory is not allocated at start up; it only
# specifies the maximum limit the tree could grow to.
# Note: Don't think you are making scorpio weak by not setting
# this memory to high value, infact treeht=0 is the strongest
# MCTS setting.
# frac_freeze_tree [0 - 100] - freeze tree after this percentage of time is spent
# frac_alphabeta [0 - 100] - use alpha-beta search this percent of the time
# mcts_strategy_depth - Lookahead depth for MCTS
# alphabeta_depth [0 - 64] - depth for the shallow standard alphabeta searches at the leaves
# evaluate_depth [0 - 64] - search depth for evaluation of new children
# backup_type - minmax = 0, averaging = 1, mixed = 2, for mixing score with previous ID use 3,4,5 resp.
# reuse_tree - reuse tree between moves
##################################################################
montecarlo 1
treeht 12800
frac_freeze_tree 100
frac_alphabeta 100
mcts_strategy_depth 30
alphabeta_depth 16
evaluate_depth 0
backup_type 0
reuse_tree 1
To get #12 (i.e scorpio-mcts-min) change the following three options
the temptation to apply alpha beta elements (search,eval etc) in lczero is high and will
become higher and higher, then will be proper to delete the word "zero"
i think this temptation comes from the hidden impatience to see lczero to beat stockfish and this is bad. the lczero stuff and her fans cultivated expectations to ppl that
lczero soon will crush sf houdini komodo etc.
i predict sooner or later they will add aplha beta elements due to to impatience
but pls forget the word "zero"
You obviously did not read the paper. SF did win some games. Overall though, QED. DeepMind demonstrated that a NN could become a world class chess champ with only self play. Now its time to solve the real problems in the world with AI.
That seems about right to get scorpio-mcts-min. If leela beats that convincingly switch to the alpha-beta rollouts with depth=3 (scorpio-mcts-ab3) and go up the ranks increasing the alphabeta depth...