Move coloring

•	green-colored moves are proved, confirmed and set as to-play moves (being user and engine related)*

•	blue-colored moves are experimental moves, already examined without any final conclusions but interesting enough for further researching and that's why set as to-play/no-played moves temporarily as an user option (being user related)*

•	red-colored moves are rejected and that's why set as no-played moves definitively (being user and engine related)*

•	black-colored moves are playable ones (e.g. not examined ones so far) depending on their features as "Total", "played %" and learning statistics as 'weight learning', 'result learning' and 'position learning" but always ranked after green-colored moves (being engine related)*

•	orange-colored moves were already examined with an intermediate conclusion of being not ranking along other good alternatives and so rejected temporarily, other (black-colored) moves have to be examined before - set as no-played moves temporarily (being user related)*

•

purple-colored moves are temporarily set as no-played moves independently wether being green- or blue- or black-colored moves. There are very different reasons for doing that, be it of tactical reason related to a specific opponent or trying out new ideas while playing matches or anything else. (being user related)*

•	Grey moves are 'phantom' moves, these are moves than can be in the book as result of adding a variations for only white or black, the other colors moves will not be playable but added as phantom moves, they don't play a roles in move selection but may help the user to know what's in the book.

* setting a focus just on main context!

Mapping between priority and move color

For those who prefer numbers, the following mapping exist:

pri color

0 black / gray

1 orange

2 purple

3 black

4 blue

5 green

Note: Only moves with a priority value of 3,4 or 5 are considered playable.