  In this paper, a nonclassical algebraic solution of a 3-variable irregular
Garnier system is constructed. Diarra--Loray have studied classification of
algebraic solutions of irregular Garnier systems. There are two type of the
algebraic solutions: classical type and pull-back type. They have shown that
there are exactly three nonclassical algebraic solutions for $N$-variables
irregular Garnier systems with $N>1$. Explicit forms of two of the three
solutions are already given. The solution constructed in the present paper is
the remained algebraic solution.
