1n2kb1r/rb3p1p/p1pp4/2n1Bpp1/1PN3P1/4P2N/P2P3P/R2K1R2 b k - 1 20
FEN state: 1n2kb1r/rb3p1p/p1pp4/2n1Bpp1/1PN3P1/4P2N/P2P3P/R2K1R2 b k - 1 20 ; Best move: d6e5
The current state of the chess board is: Black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black rook at a7, black bishop at b7, black pawn at f7 and black pawn at h7. Black pawn at a6, black pawn at c6 and black pawn at d6. Black knight at c5, white bishop at e5, black pawn at f5 and black pawn at g5. White pawn at b4, white knight at c4 and white pawn at g4. White pawn at e3 and white knight at h3. White pawn at a2, white pawn at d2 and white pawn at h2. White rook at a1, white king at d1 and white rook at f1. Black kingside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.