r1bqk3/p1ppnp1p/4pnr1/1p4p1/Pb1P1NPP/2PKB3/RP2PP2/1N1Q1B1R w q - 1 12
FEN state: r1bqk3/p1ppnp1p/4pnr1/1p4p1/Pb1P1NPP/2PKB3/RP2PP2/1N1Q1B1R w q - 1 12 ; Best move: f4g6
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8 and black king at e8. Black pawn at a7, black pawn at c7, black pawn at d7, black knight at e7, black pawn at f7 and black pawn at h7. Black pawn at e6, black knight at f6 and black rook at g6. Black pawn at b5 and black pawn at g5. White pawn at a4, black bishop at b4, white pawn at d4, white knight at f4, white pawn at g4 and white pawn at h4. White pawn at c3, white king at d3 and white bishop at e3. White rook at a2, white pawn at b2, white pawn at e2 and white pawn at f2. White knight at b1, white queen at d1, white bishop at f1 and white rook at h1. Black queenside is the only castle move available. Half move number is 1. Full move number is 12. White to move.