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Using
the endgame tablebase:
Returns
the score of the given position. The input is the position in FEN
notation.
A description of FEN can be found at Wikipedia.
The score is given as distance to
mat, or 0 when the position
is
a draw. An error response is returned when position
is invalid or
not
in database. e.g. M5 = color to move gives mate in 5 , -M3 =
color
to move gets mated in 5 moves. Given
a FEN position as input, the return is a list
of all the valid moves
together with their scores.
For
Example:
FEN:
8/8/8/8/6p1/7p/4kB2/6K1
b - -
returns:
Ke1-d1
0
Ke2-d2 0
h3-h2
M17
Ke2-d3 0
Ke2-f3
0
g4-g3 0
An example in using FEN notation:
Here's
the FEN for the starting
position:
rnbqkbnr/pppppppp/8/8/8/8/PPPPPPPP/RNBQKBNR
w KQkq - 0 1
And
after the move 1. e4:
rnbqkbnr/pppppppp/8/8/4P3/8/PPPP1PPP/RNBQKBNR
b KQkq e3 0 1
And
then after 1. ... c5:
rnbqkbnr/pp1ppppp/8/2p5/4P3/8/PPPP1PPP/RNBQKBNR
w KQkq c6 0 2
And
then after 2. Nf3:
rnbqkbnr/pp1ppppp/8/2p5/4P3/5N2/PPPP1PPP/RNBQKB1R
b KQkq - 1 2
For
two kings on their home
squares and a white pawn on e2 (White to move)
with thirty eight
full
moves played with five halfmoves since the last pawn move or capture:
4k3/8/8/8/8/8/4P3/4K3
w - - 5
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