1nb1k2r/1r5p/2p1p2n/bp4p1/p1PpP1P1/PPNP4/3B1P1P/1R2KB1R b k - 1 20
FEN state: 1nb1k2r/1r5p/2p1p2n/bp4p1/p1PpP1P1/PPNP4/3B1P1P/1R2KB1R b k - 1 20 ; Best move: d4c3
The current state of the chess board is: Black knight at b8, black bishop at c8, black king at e8 and black rook at h8. Black rook at b7 and black pawn at h7. Black pawn at c6, black pawn at e6 and black knight at h6. Black bishop at a5, black pawn at b5 and black pawn at g5. Black pawn at a4, white pawn at c4, black pawn at d4, white pawn at e4 and white pawn at g4. White pawn at a3, white pawn at b3, white knight at c3 and white pawn at d3. White bishop at d2, white pawn at f2 and white pawn at h2. White rook at b1, white king at e1, white bishop at f1 and white rook at h1. Black kingside is the only castle move available. Half move number is 1. Full move number is 20. Black to move.