1r1qkb1r/pp1bp2p/2p4n/1P1p1p2/K1PB1Pp1/N2P1nPN/P3P2P/R1Q2B1R b k - 5 20
FEN state: 1r1qkb1r/pp1bp2p/2p4n/1P1p1p2/K1PB1Pp1/N2P1nPN/P3P2P/R1Q2B1R b k - 5 20 ; Best move: f3d4
The current state of the chess board is: Black rook at b8, black queen at d8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7, black bishop at d7, black pawn at e7 and black pawn at h7. Black pawn at c6 and black knight at h6. White pawn at b5, black pawn at d5 and black pawn at f5. White king at a4, white pawn at c4, white bishop at d4, white pawn at f4 and black pawn at g4. White knight at a3, white pawn at d3, black knight at f3, white pawn at g3 and white knight at h3. White pawn at a2, white pawn at e2 and white pawn at h2. White rook at a1, white queen at c1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 5. Full move number is 20. Black to move.