Dry run for ratinmaze program

#1

when the recursion starts and j value increases till 4 and at 4 it returns false as it goes out of the grid…then the false is returned to which part and after false is returned what is the next line that executes

#2

using 0 indexed
0,4
then false returns to previous point ie (0 , 3)

from 1,3 the fn call for ( i+1 , j ) is called ie ( 1, 3 ) then ( i, j+1 ) ->( 1, 4) then return false
returns back to 1, 3 ->then calls (i+1 , j ) 2 , 3

in short if the fn is
fn( i , j ) {
if( i == 4 || j == 4 )
return fasle;

fn( i , j+1)

fn( i+1 , j )
}

so then next call is called that comes in the code