rnbqkb2/1p1pr3/p3pppp/1NB5/1PPn1P1P/7N/P1P1P1P1/R2QKB1R b KQq - 0 15
FEN state: rnbqkb2/1p1pr3/p3pppp/1NB5/1PPn1P1P/7N/P1P1P1P1/R2QKB1R b KQq - 0 15 ; Best move: d4b5
The current state of the chess board is: Black rook at a8, black knight at b8, black bishop at c8, black queen at d8, black king at e8 and black bishop at f8. Black pawn at b7, black pawn at d7 and black rook at e7. Black pawn at a6, black pawn at e6, black pawn at f6, black pawn at g6 and black pawn at h6. White knight at b5 and white bishop at c5. White pawn at b4, white pawn at c4, black knight at d4, white pawn at f4 and white pawn at h4. White knight at h3. White pawn at a2, white pawn at c2, white pawn at e2 and white pawn at g2. White rook at a1, white queen at d1, white king at e1, white bishop at f1 and white rook at h1. White kingside, white queenside and black queenside castles are available. Half move number is 0. Full move number is 15. Black to move.