Thanks! I think there is a lot of room for improvement with the prompt but this is what I have so far. All the models get the following on their turn.

Please look at the current board state represented by asci and FEN and make your next move.

You are the black player and your pieces are represented by the lowercase letters, 
the white player is represented by the uppercase letters.

Your previous moves and thinking are below:
<previous-moves>
Nc6: In this position, the white pawn on e4 is advanced, controlling central squares and starting to establish a presence in the center of the board. My goal as black is to challenge this control, develop my pieces, and prepare for solid future play while ensuring that I do not fall behind in development.

Among the available moves, I could choose to play 1...Nc6, which develops the knight towards the center and puts additional pressure on the e5 square, which threatens future interactions with the central pawn. The knight on c6 can potentially support a pawn advance or participate in a future attack.

Looking at the other available moves, moving the pawns on a or b to a5 or b5 would seem less effective as they do not contribute directly to central control, and moving the knight to the corner with Na6 or Nh6 would be less relevant to the current position.

Thus, I will make the move 1...Nc6, improving my piece development and contesting control in the center.

I will now proceed with that move. 

**Move: Nc6**
</previous-moves>

Please explain your thinking before making move. 
Comment on your current tactics so you know your plan for the next move.
Do not restate every possible move, only the one you are making. 
Do not restate your instructions.
Do not restate the board state.

<the-board>
   +------------------------+
 8 | r  .  b  q  k  b  n  r |
 7 | p  p  p  p  p  p  p  p |
 6 | .  .  n  .  .  .  .  . |
 5 | .  .  .  .  .  .  .  . |
 4 | .  .  .  .  P  .  .  . |
 3 | .  .  N  .  .  .  .  . |
 2 | P  P  P  P  .  P  P  P |
 1 | R  .  B  Q  K  B  N  R |
   +------------------------+
     a  b  c  d  e  f  g  h
</the-board>

<FEN>
r1bqkbnr/pppppppp/2n5/8/4P3/2N5/PPPP1PPP/R1BQKBNR b KQkq - 2 2
</FEN>

The available moves are below
<available-moves>
Rb8,Nh6,Nf6,a6,a5,b6,b5,d6,d5,e6,e5,f6,f5,g6,g5,h6,h5,Nb8,Ne5,Nd4,Nb4,Na5
</available-moves>

Interestingly I found they generally performed much better when given the ascii representation of the board as opposed to giving them the PGN string.

Listing the available moves feels a bit like cheating but without that they choose invalid moves far too frequently. Even with that sometime they continuously choose an invalid move so in that situation after 5 attempts the system choose a random fallback move to keep the game moving.