2r1k1nr/1bpp1p1p/1pn3p1/p3p3/6Bb/3P2BN/PQ2NPPP/R3KR2 b Q - 10 20
FEN state: 2r1k1nr/1bpp1p1p/1pn3p1/p3p3/6Bb/3P2BN/PQ2NPPP/R3KR2 b Q - 10 20 ; Best move: h4f6
The current state of the chess board is: Black rook at c8, black king at e8, black knight at g8 and black rook at h8. Black bishop at b7, black pawn at c7, black pawn at d7, black pawn at f7 and black pawn at h7. Black pawn at b6, black knight at c6 and black pawn at g6. Black pawn at a5 and black pawn at e5. White bishop at g4 and black bishop at h4. White pawn at d3, white bishop at g3 and white knight at h3. White pawn at a2, white queen at b2, white knight at e2, white pawn at f2, white pawn at g2 and white pawn at h2. White rook at a1, white king at e1 and white rook at f1. White queenside is the only castle move available. Half move number is 10. Full move number is 20. Black to move.