RIDDLER - June 4 2021

Letters are "topologically equivalent" if they can be transformed into each other through deformations such as twisting, stretching, bending (tearing not allowed).

The uppercase sans serif font can be separated into different sets of letters that are topologically equivalent:

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

{A R}

{B}

{C G I J L M N S U V W Z}

{D O}

{E F T Y}

{H K}

{P Q}

{X}

To decipher the message, we consider topologically equivalent sets of letters that each letter of YIRTHA belongs to:

Y  {E F T Y}
I  {C G I J L M N S U V W Z}
R  {A R}
T  {E F T Y}
H  {H K}
A  {A R}

It makes sense to start with the last two letters since the only combinations are

HA, HR, KA, KR

So words ending in HA or KA seem to make the most sense. From there, it's a matter of trying various word combinations, keeping in mind the message MAY refer to actually solving the puzzle... And indeed, a flash of insight produces EUREKA ⚡