rn1q1bn1/ppp1p3/3pk1r1/1B2Nbp1/4P3/P1P5/1P1P1P1P/RNB1K1R1 b Q - 3 13
FEN state: rn1q1bn1/ppp1p3/3pk1r1/1B2Nbp1/4P3/P1P5/1P1P1P1P/RNB1K1R1 b Q - 3 13 ; Best move: f5e4
The current state of the chess board is: Black rook at a8, black knight at b8, black queen at d8, black bishop at f8 and black knight at g8. Black pawn at a7, black pawn at b7, black pawn at c7 and black pawn at e7. Black pawn at d6, black king at e6 and black rook at g6. White bishop at b5, white knight at e5, black bishop at f5 and black pawn at g5. White pawn at e4. White pawn at a3 and white pawn at c3. White pawn at b2, white pawn at d2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white bishop at c1, white king at e1 and white rook at g1. White queenside is the only castle move available. Half move number is 3. Full move number is 13. Black to move.