rn2k3/1p2np1r/p2b4/3PPbpp/6P1/P1P4N/1P2KPBP/RN1QB1R1 b q - 0 20
FEN state: rn2k3/1p2np1r/p2b4/3PPbpp/6P1/P1P4N/1P2KPBP/RN1QB1R1 b q - 0 20 ; Best move: h5g4
The current state of the chess board is: Black rook at a8, black knight at b8 and black king at e8. Black pawn at b7, black knight at e7, black pawn at f7 and black rook at h7. Black pawn at a6 and black bishop at d6. White pawn at d5, white pawn at e5, black bishop at f5, black pawn at g5 and black pawn at h5. White pawn at g4. White pawn at a3, white pawn at c3 and white knight at h3. White pawn at b2, white king at e2, white pawn at f2, white bishop at g2 and white pawn at h2. White rook at a1, white knight at b1, white queen at d1, white bishop at e1 and white rook at g1. Black queenside is the only castle move available. Half move number is 0. Full move number is 20. Black to move.