r1b1kb1r/pp3p2/nqppp3/P2n3p/2P1NPpP/R3P3/1P1P2P1/2BQKBNR b Kkq - 1 13
FEN state: r1b1kb1r/pp3p2/nqppp3/P2n3p/2P1NPpP/R3P3/1P1P2P1/2BQKBNR b Kkq - 1 13 ; Best move: b6b4
The current state of the chess board is: Black rook at a8, black bishop at c8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black pawn at b7 and black pawn at f7. Black knight at a6, black queen at b6, black pawn at c6, black pawn at d6 and black pawn at e6. White pawn at a5, black knight at d5 and black pawn at h5. White pawn at c4, white knight at e4, white pawn at f4, black pawn at g4 and white pawn at h4. White rook at a3 and white pawn at e3. White pawn at b2, white pawn at d2 and white pawn at g2. White bishop at c1, white queen at d1, white king at e1, white bishop at f1, white knight at g1 and white rook at h1. White kingside, black kingside and black queenside castles are available. Half move number is 1. Full move number is 13. Black to move.