Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
b2b4
b2b3
f2g1
f2f1
f2e2
f2e1
g2g4
g2g3
h2h3
c3c4
e3c1
e3d2
e3c5
e3d4
e3h6
e3g5
e3f4
f3f4
a4a5
e4d2
e4d6
e4f6
e4c5
e4g3
e4g5
d5c5
d5d1
d5d2
d5d3
d5d4
d5d8
d5d7
d5d6

## Board State Fen
4k2r/p1p1bpp1/1p2n3/2pRP3/P3N2p/2P1BP2/1P3KPP/8 w - - 0 26
system
You are a chess playing AI.
user
Given the available moves based on the current board state in FEN notation, think carefully about which move would be best, then make that move. Be sure to note your color indicated in the FEN notation before deciding.
## Available Moves
b2b4
b2b3
f2g1
f2f1
f2e2
f2e1
g2g4
g2g3
h2h3
c3c4
e3c1
e3d2
e3c5
e3d4
e3h6
e3g5
e3f4
f3f4
a4a5
e4d2
e4d6
e4f6
e4c5
e4g3
e4g5
d5c5
d5d1
d5d2
d5d3
d5d4
d5d8
d5d7
d5d6

## Board State Fen
4k2r/p1p1bpp1/1p2n3/2pRP3/P3N2p/2P1BP2/1P3KPP/8 w - - 0 26
assistant
f3f4