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
a2a4
a2a3
g1h1
g1f1
g2g4
g2g3
h2e5
h2f4
h2g3
f3e1
f3e5
f3g5
f3d2
f3d4
f3h4
d6c6
d6d1
d6d2
d6d3
d6d4
d6d5
d6h6
d6g6
d6f6
d6e6
d6d8
d6d7
b7a7
b7b5
b7b6
b7g7
b7f7
b7e7
b7d7
b7c7
b7b8

## Board State Fen
r5k1/1R4bn/2pR4/pr4p1/7p/5N1P/P4PPB/6K1 w - - 1 28
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
a2a4
a2a3
g1h1
g1f1
g2g4
g2g3
h2e5
h2f4
h2g3
f3e1
f3e5
f3g5
f3d2
f3d4
f3h4
d6c6
d6d1
d6d2
d6d3
d6d4
d6d5
d6h6
d6g6
d6f6
d6e6
d6d8
d6d7
b7a7
b7b5
b7b6
b7g7
b7f7
b7e7
b7d7
b7c7
b7b8

## Board State Fen
r5k1/1R4bn/2pR4/pr4p1/7p/5N1P/P4PPB/6K1 w - - 1 28
assistant
b7b5