1rbnkb1r/pppp1p2/2B1pqpn/7p/3B2P1/3PP3/PPP2P1P/RN1Q1KNR b k - 4 10
FEN state: 1rbnkb1r/pppp1p2/2B1pqpn/7p/3B2P1/3PP3/PPP2P1P/RN1Q1KNR b k - 4 10 ; Best move: e6e5
The current state of the chess board is: Black rook at b8, black bishop at c8, black knight at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black pawn at c7, black pawn at d7 and black pawn at f7. White bishop at c6, black pawn at e6, black queen at f6, black pawn at g6 and black knight at h6. Black pawn at h5. White bishop at d4 and white pawn at g4. White pawn at d3 and white pawn at e3. White pawn at a2, white pawn at b2, white pawn at c2, white pawn at f2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white king at f1, white knight at g1 and white rook at h1. Black kingside is the only castle move available. Half move number is 4. Full move number is 10. Black to move.