Here is the puzzle so far
38* *** 92*
*** 439 785
**9 *2* 3**
*6* *9* ***
8** 3*2 **9
9** *4* *7*
**1 97* 5*8
495 286 137
**8 *** *92
There is a 1-5 naked pair in Bottom row (r9?) in Middle box at the middle and left (c4-c5?). This leaves the other two options in this square to be 3 or 4 but I cannot figure out which one could be eliminated from there.