r1bq1b2/p1pppk1r/np5n/1P3ppp/2N2P2/2P3PB/PB1PP2P/RN1Q1K1R w - - 2 12
FEN state: r1bq1b2/p1pppk1r/np5n/1P3ppp/2N2P2/2P3PB/PB1PP2P/RN1Q1K1R w - - 2 12 ; Best move: b5a6
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black bishop at f8. Black pawn at a7, black pawn at c7, black pawn at d7, black pawn at e7, black king at f7 and black rook at h7. Black knight at a6, black pawn at b6 and black knight at h6. White pawn at b5, black pawn at f5, black pawn at g5 and black pawn at h5. White knight at c4 and white pawn at f4. White pawn at c3, white pawn at g3 and white bishop at h3. White pawn at a2, white bishop at b2, white pawn at d2, white pawn at e2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at f1 and white rook at h1. Both players have exhausted their castles. Half move number is 2. Full move number is 12. White to move.