Solving (continued)

Step 13: There is only one possibility left in this column, so we can complete it.

Step 14: In this column, the two possibilities overlap on one square. So we can blacken this square.

Step 15: The beginning of the only remaining portion is displayed, so we can complete the entire row.

Step 16: The end of the first portion is displayed. So we can complete it.

Step 17: The only portion of this column is already displayed. We can therefore complete the entire column.

Step 18: The only portion of this row is too large to be located between these two crosses. So we can cross out this box.

Step 19: There is only one possibility left in this column.

Step 20: Same, there is only one possibility left in this row.

Step 21: Same, there is only one possibility left in this column.

Step 22: The last portion is displayed. We can therefore delimit it with a cross.

Step 23: Same, the last portion is displayed. So we can fill in the remaining boxes with crosses.