r2qn1r1/p1pkbppp/np1P4/4p3/1P1B4/N4P1P/P1bPP1PR/R2QKBN1 b Q - 0 12
FEN state: r2qn1r1/p1pkbppp/np1P4/4p3/1P1B4/N4P1P/P1bPP1PR/R2QKBN1 b Q - 0 12 ; Best move: e7h4
The current state of the chess board is: Black rook at a8, black queen at d8, black knight at e8 and black rook at g8. Black pawn at a7, black pawn at c7, black king at d7, black bishop at e7, black pawn at f7, black pawn at g7 and black pawn at h7. Black knight at a6, black pawn at b6 and white pawn at d6. Black pawn at e5. White pawn at b4 and white bishop at d4. White knight at a3, white pawn at f3 and white pawn at h3. White pawn at a2, black bishop at c2, white pawn at d2, white pawn at e2, white pawn at g2 and white rook at h2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white knight at g1. White queenside is the only castle move available. Half move number is 0. Full move number is 12. Black to move.