rn2kb2/4pppr/ppq2n1p/3p3b/2QP4/PPB2N2/2P1PPPP/1R1K1B1R b q - 1 15
FEN state: rn2kb2/4pppr/ppq2n1p/3p3b/2QP4/PPB2N2/2P1PPPP/1R1K1B1R b q - 1 15 ; Best move: d5c4
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8 and black bishop at f8. Black pawn at e7, black pawn at f7, black pawn at g7 and black rook at h7. Black pawn at a6, black pawn at b6, black queen at c6, black knight at f6 and black pawn at h6. Black pawn at d5 and black bishop at h5. White queen at c4 and white pawn at d4. White pawn at a3, white pawn at b3, white bishop at c3 and white knight at f3. White pawn at c2, white pawn at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at b1, white king 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 15. Black to move.