r1bq1br1/p1pk1n1p/3p1p2/1Pn1p3/1B1P1PpP/PP2P3/3N2PR/RN1QKB2 b Q - 0 15
FEN state: r1bq1br1/p1pk1n1p/3p1p2/1Pn1p3/1B1P1PpP/PP2P3/3N2PR/RN1QKB2 b Q - 0 15 ; Best move: e5d4
The current state of the chess board is: Black rook at a8, black bishop at c8, black queen at d8, black bishop at f8 and black rook at g8. Black pawn at a7, black pawn at c7, black king at d7, black knight at f7 and black pawn at h7. Black pawn at d6 and black pawn at f6. White pawn at b5, black knight at c5 and black pawn at e5. White bishop at b4, white pawn at d4, white pawn at f4, black pawn at g4 and white pawn at h4. White pawn at a3, white pawn at b3 and white pawn at e3. White knight at d2, white pawn at g2 and white rook at h2. White rook at a1, white knight at b1, white queen at d1, white king at e1 and white bishop at f1. White queenside is the only castle move available. Half move number is 0. Full move number is 15. Black to move.