A finite, simple, undirected graph $G=(V,E)$ is said to be *(vertex-)critical* if for all $v\in V$ we have $\chi(G\setminus\{v\}) < \chi(G)$.

Is there a vertex-critical graph $G = (V,E)$ with $|V|> 1$ and $G \cong H_1\times H_2$ for some graphs $H_1, H_2$? (Here, $H_1 \times H_2$ denotes the [categorical, or tensor, product](https://en.wikipedia.org/wiki/Tensor_product_of_graphs) of graphs.)