After opening moves, we must find "interesting positions".
EXAMPLE 1:
Move Whiteknight1 to d5.
d5 is interesting because the knight can take the blackKnight2 at f6.
d5 is a "from" position in the strategy KB:
A position key WhiteKnight1_d5f6.
d5 is not reachable from the parent KB.
I.E: We must find a move that can protect d5.
This we can find in the strategy KB.
EXAMPLE 2:
WhiteKnight1 to b5.
b5 is interesting because it can take BlackBishop2 at d6.
b5 is not threatened by the opponent.
EXAMPLE 3:
WhiteKnite1 to e4 is NOT interesting, because e4 is threatened by a black pawn.
After opening moves, we must find "interesting positions".
EXAMPLE 1:
Move Whiteknight1 to d5.
d5 is interesting because the knight can take the blackKnight2 at f6.
d5 is a "from" position in the strategy KB:
A position key WhiteKnight1_d5f6.
d5 is not reachable from the parent KB.
I.E: We must find a move that can protect d5.
This we can find in the strategy KB.
EXAMPLE 2:
WhiteKnight1 to b5.
b5 is interesting because it can take BlackBishop2 at d6.
b5 is not threatened by the opponent.
EXAMPLE 3:
WhiteKnite1 to e4 is NOT interesting, because e4 is threatened by a black pawn.