This is the requirement of the problem

The first player is asked from the keyboard for a decimal number from
0 to 9 without being displayed on the screen. The second player must
guess the number that the first player thought of by entering it on
the keyboard. After input, a message will always be printed indicating
to the player if the number is too high, too low or the correct one.
The player must enter numbers until he guesses the correct one. If the
figure is correct, this is indicated and the game is stopped.

Hint: see function 8 of INT 21h”

This is what I tried.. It works fine, but shows me double when the number is less “numarul este mic”, and grater “numarul este mare”, what should I do?

.model small
.stack 100h

.data 
    prompt  db 'Introduceti o valoare intre 0 si 9:' ,0DH,0AH,'$'
    mesaj_1 db 'Numarul este mic'                    ,0DH,0AH,'$'
    mesaj_2 db 'Numarul este mare'                   ,0DH,0AH,'$'
    mesaj_3 db 'Numarul este corect!'                ,0DH,0AH,'$'
    mesaj_4 db 'Player introdu'                      ,0DH,0AH,'$'
    
.code

start:
   Mov ax, @data
   Mov ds, ax
   mov dx, offset mesaj_4
   
   mov ah, 9h
   int 21h
   
   mov ah, 8h
   int 21h
   
   mov cl, al
   
   mov dx, offset prompt
            
bucla:
   mov ah, 9h
   int 21h
   
   mov ah, 01h
   int 21h
   
   mov ch, al
   cmp ch, cl

   jl maiMic
   jg maiMare
   je corect
      
        
maiMic:
   mov dx, offset mesaj_1
   mov ah, 9h
   int 21h
   jl bucla
   
maiMare:
   mov dx, offset mesaj_2
   mov ah, 9h
   int 21h
   jmp bucla
      
corect:
   mov dx, offset mesaj_3
   mov ah, 9h
   int 21h 
   jmp tipareste
   
tipareste: 
   mov ah, 9
   int 21h
     
   mov ax, 4c00h
   int 21h