A high‐density, laser‐initiated, gas‐embeddedZ‐pinch is modeled computationally in two dimensions. All aspects of an actual experiment are modeled: the computer model includes a laser optics package, a Marx‐bank/transmission line package, an electron avalanche prescription, and two‐dimensional magnetohydrodynamics. The experimental observations are reproduced to a very satisfactory degree. Predictions of performance in nonstandard operating modes are given.