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
e1e2
e1d1
f1a6
f1b5
f1c4
f1d3
f1e2
c2a2
c2b2
c2c1
c2f2
c2e2
c2d2
c3c4
f3e5
f3g1
f3g5
f3d2
f3d4
f3h2
f3h4
g3f2
g3b8
g3c7
g3d6
g3e5
g3f4
g3h2
g3h4
h5a5
h5b5
h5c5
h5d5
h5e5
h5f5
h5g5
h5h1
h5h2
h5h3
h5h4
h5h8
h5h7
h5h6

## Board State Fen
r1b2rk1/pp6/2n1pp2/7R/8/2P1bNB1/2R3P1/4KB2 w - - 0 21
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
e1e2
e1d1
f1a6
f1b5
f1c4
f1d3
f1e2
c2a2
c2b2
c2c1
c2f2
c2e2
c2d2
c3c4
f3e5
f3g1
f3g5
f3d2
f3d4
f3h2
f3h4
g3f2
g3b8
g3c7
g3d6
g3e5
g3f4
g3h2
g3h4
h5a5
h5b5
h5c5
h5d5
h5e5
h5f5
h5g5
h5h1
h5h2
h5h3
h5h4
h5h8
h5h7
h5h6

## Board State Fen
r1b2rk1/pp6/2n1pp2/7R/8/2P1bNB1/2R3P1/4KB2 w - - 0 21
assistant
f1d3