r2q2nr/pb1pk3/2pb1ppp/4p3/1P2PP2/5K1N/P1PP2PP/RNB1QB1R w - - 0 12
FEN state: r2q2nr/pb1pk3/2pb1ppp/4p3/1P2PP2/5K1N/P1PP2PP/RNB1QB1R w - - 0 12 ; Best move: b1a3
The current state of the chess board is: Black rook at a8, black queen at d8, black knight at g8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at d7 and black king at e7. Black pawn at c6, black bishop at d6, black pawn at f6, black pawn at g6 and black pawn at h6. Black pawn at e5. White pawn at b4, white pawn at e4 and white pawn at f4. White king at f3 and white knight at h3. White pawn at a2, white pawn at c2, white pawn at d2, white pawn at g2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white queen at e1, white bishop at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 0. Full move number is 12. White to move.