rn2kb1r/pb4pp/2p4n/qp1p1pN1/NP1P1p2/P7/2PKP1PP/1RBQ1B1R w kq - 0 15
FEN state: rn2kb1r/pb4pp/2p4n/qp1p1pN1/NP1P1p2/P7/2PKP1PP/1RBQ1B1R w kq - 0 15 ; Best move: b4a5
The current state of the chess board is: Black rook at a8, black knight at b8, black king at e8, black bishop at f8 and black rook at h8. Black pawn at a7, black bishop at b7, black pawn at g7 and black pawn at h7. Black pawn at c6 and black knight at h6. Black queen at a5, black pawn at b5, black pawn at d5, black pawn at f5 and white knight at g5. White knight at a4, white pawn at b4, white pawn at d4 and black pawn at f4. White pawn at a3. White pawn at c2, white king at d2, white pawn at e2, white pawn at g2 and white pawn at h2. White rook at b1, white bishop at c1, white queen at d1, white bishop at f1 and white rook at h1. Black kingside and black queenside castles are available. Half move number is 0. Full move number is 15. White to move.