?- demo(100). numbers = {1,6,5,2,2} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {6,2,6,9,3} and goal = 0 considering rule 1 ... considering rule 2 ... application of rule 2 produces solution: ( ( 6 - 6 ) * ( 2 * ( 9 * 3 ) ) ) numbers = {2,4,5,7,9} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {9,4,3,4,4} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... application of rule 8 produces solution: ( 3 + ( ( 4 - 4 ) * ( 9 * 4 ) ) ) numbers = {4,0,5,7,8} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 7 - 4 ) + ( 0 * ( 5 * 8 ) ) ) numbers = {0,5,0,9,1} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {8,2,9,1,8} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {8,5,3,6,7} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {3,8,3,7,0} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 8 - 3 ) + ( 3 * ( 7 * 0 ) ) ) numbers = {5,4,6,9,0} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 9 + ( 0 * ( 5 * ( 4 * 6 ) ) ) ) numbers = {0,5,7,2,3} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 7 + 2 ) + ( 0 * ( 5 * 3 ) ) ) numbers = {0,6,3,3,4} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 6 + 3 ) + ( 0 * ( 3 * 4 ) ) ) numbers = {5,0,6,0,5} and goal = 0 considering rule 1 ... application of rule 1 produces solution: ( 5 * ( 0 * ( 6 * ( 0 * 5 ) ) ) ) numbers = {0,0,5,8,6} and goal = 0 considering rule 1 ... application of rule 1 produces solution: ( 0 * ( 0 * ( 5 * ( 8 * 6 ) ) ) ) numbers = {7,6,8,9,2} and goal = 6 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {8,9,5,8,8} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,4,3,7,0} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {2,9,7,7,5} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... application of rule 8 produces solution: ( 9 + ( ( 7 - 7 ) * ( 2 * 5 ) ) ) numbers = {9,0,4,3,6} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 9 - 4 ) + ( 0 * ( 3 * 6 ) ) ) numbers = {7,1,1,1,1} and goal = 6 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 7 - 1 ) + ( ( 1 - 1 ) * 1 ) ) numbers = {5,0,4,4,6} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {9,9,2,7,3} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... application of rule 8 produces solution: ( 3 + ( ( 9 - 9 ) * ( 2 * 7 ) ) ) numbers = {0,0,4,5,3} and goal = 8 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 5 + 3 ) + ( 0 * ( 0 * 4 ) ) ) numbers = {2,7,8,4,7} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 8 - 4 ) + ( ( 7 - 7 ) * 2 ) ) numbers = {4,3,2,4,1} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 3 - 1 ) + ( ( 4 - 4 ) * 2 ) ) numbers = {0,2,2,4,3} and goal = 1 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 4 - 3 ) + ( 0 * ( 2 * 2 ) ) ) numbers = {8,1,1,3,0} and goal = 1 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 1 + ( 0 * ( 8 * ( 1 * 3 ) ) ) ) numbers = {9,4,7,6,8} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,1,1,0,9} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 4 + ( 0 * ( 1 * ( 1 * 9 ) ) ) ) numbers = {3,2,3,9,4} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 4 - 2 ) + ( ( 3 - 3 ) * 9 ) ) numbers = {3,5,6,6,2} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {1,1,6,1,4} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... application of rule 6 produces solution: ( ( 1 + 4 ) + ( ( 1 - 1 ) * 6 ) ) numbers = {1,0,0,9,2} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 9 + ( 0 * ( 1 * ( 0 * 2 ) ) ) ) numbers = {5,5,7,4,2} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... application of rule 8 produces solution: ( 7 + ( ( 5 - 5 ) * ( 4 * 2 ) ) ) numbers = {4,6,1,4,6} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... application of rule 6 produces solution: ( ( 6 + 1 ) + ( ( 4 - 4 ) * 6 ) ) numbers = {4,1,1,7,5} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... application of rule 6 produces solution: ( ( 4 + 5 ) + ( ( 1 - 1 ) * 7 ) ) numbers = {7,2,0,7,5} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 7 + 2 ) + ( 0 * ( 7 * 5 ) ) ) numbers = {6,7,6,1,2} and goal = 6 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 7 - 1 ) + ( ( 6 - 6 ) * 2 ) ) numbers = {0,7,0,8,4} and goal = 0 considering rule 1 ... application of rule 1 produces solution: ( 0 * ( 7 * ( 0 * ( 8 * 4 ) ) ) ) numbers = {8,6,6,0,4} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 8 - 6 ) + ( 6 * ( 0 * 4 ) ) ) numbers = {8,9,2,7,6} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {1,7,9,9,2} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 7 - 2 ) + ( ( 9 - 9 ) * 1 ) ) numbers = {8,9,1,0,9} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {7,6,0,5,6} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 5 + ( 0 * ( 7 * ( 6 * 6 ) ) ) ) numbers = {8,1,9,6,5} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,5,3,6,2} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {5,5,4,5,5} and goal = 0 considering rule 1 ... considering rule 2 ... application of rule 2 produces solution: ( ( 5 - 5 ) * ( 4 * ( 5 * 5 ) ) ) numbers = {7,4,3,5,4} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 7 - 3 ) + ( ( 4 - 4 ) * 5 ) ) numbers = {7,3,8,1,5} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {8,4,4,4,7} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {3,4,7,3,9} and goal = 1 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,1,1,5,0} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 5 + ( 0 * ( 4 * ( 1 * 1 ) ) ) ) numbers = {6,5,7,2,6} and goal = 1 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {1,4,9,0,2} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 1 + 2 ) + ( 4 * ( 9 * 0 ) ) ) numbers = {5,5,7,8,0} and goal = 6 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,4,4,4,2} and goal = 0 considering rule 1 ... considering rule 2 ... application of rule 2 produces solution: ( ( 4 - 4 ) * ( 4 * ( 4 * 2 ) ) ) numbers = {1,5,2,4,3} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {2,8,7,8,8} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,3,1,5,3} and goal = 0 considering rule 1 ... considering rule 2 ... application of rule 2 produces solution: ( ( 3 - 3 ) * ( 4 * ( 1 * 5 ) ) ) numbers = {3,6,1,3,5} and goal = 0 considering rule 1 ... considering rule 2 ... application of rule 2 produces solution: ( ( 3 - 3 ) * ( 6 * ( 1 * 5 ) ) ) numbers = {1,1,1,2,4} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {3,4,5,7,8} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {0,1,6,1,8} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {5,3,1,5,6} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... application of rule 6 produces solution: ( ( 1 + 6 ) + ( ( 5 - 5 ) * 3 ) ) numbers = {5,3,7,9,0} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 5 - 3 ) + ( 7 * ( 9 * 0 ) ) ) numbers = {6,7,6,4,8} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {5,0,0,2,6} and goal = 0 considering rule 1 ... application of rule 1 produces solution: ( 5 * ( 0 * ( 0 * ( 2 * 6 ) ) ) ) numbers = {3,8,4,8,6} and goal = 1 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 4 - 3 ) + ( ( 8 - 8 ) * 6 ) ) numbers = {1,5,3,9,5} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,5,5,7,2} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 7 - 4 ) + ( ( 5 - 5 ) * 2 ) ) numbers = {6,9,8,4,9} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 8 - 4 ) + ( ( 9 - 9 ) * 6 ) ) numbers = {8,3,0,3,7} and goal = 0 considering rule 1 ... application of rule 1 produces solution: ( 8 * ( 3 * ( 0 * ( 3 * 7 ) ) ) ) numbers = {8,3,9,2,8} and goal = 0 considering rule 1 ... considering rule 2 ... application of rule 2 produces solution: ( ( 8 - 8 ) * ( 3 * ( 9 * 2 ) ) ) numbers = {6,4,4,8,1} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 8 - 6 ) + ( ( 4 - 4 ) * 1 ) ) numbers = {2,9,0,4,0} and goal = 8 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {6,2,4,8,6} and goal = 6 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... application of rule 6 produces solution: ( ( 2 + 4 ) + ( ( 6 - 6 ) * 8 ) ) numbers = {7,5,5,3,7} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 5 - 3 ) + ( ( 7 - 7 ) * 5 ) ) numbers = {9,8,9,0,0} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {4,8,5,3,9} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {8,1,9,2,3} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {9,4,0,0,5} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 5 + ( 0 * ( 9 * ( 4 * 0 ) ) ) ) numbers = {0,6,2,1,6} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 6 - 1 ) + ( 0 * ( 2 * 6 ) ) ) numbers = {5,2,9,3,4} and goal = 0 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {1,2,7,9,8} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {2,8,4,9,7} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {3,4,8,3,7} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... application of rule 7 produces solution: ( ( 8 - 4 ) + ( ( 3 - 3 ) * 7 ) ) numbers = {2,3,0,4,1} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 2 + 3 ) + ( 0 * ( 4 * 1 ) ) ) numbers = {9,1,2,6,6} and goal = 3 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... application of rule 6 produces solution: ( ( 1 + 2 ) + ( ( 6 - 6 ) * 9 ) ) numbers = {5,2,8,7,7} and goal = 0 considering rule 1 ... considering rule 2 ... application of rule 2 produces solution: ( ( 7 - 7 ) * ( 5 * ( 2 * 8 ) ) ) numbers = {7,1,3,9,4} and goal = 0 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {3,9,0,3,6} and goal = 6 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 6 + ( 0 * ( 3 * ( 9 * 3 ) ) ) ) numbers = {8,6,5,7,7} and goal = 8 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... application of rule 8 produces solution: ( 8 + ( ( 7 - 7 ) * ( 6 * 5 ) ) ) numbers = {9,8,5,1,7} and goal = 7 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... considering rule 7 ... considering rule 8 ... NO SOLUTION found with this rule base. numbers = {0,0,4,2,1} and goal = 6 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 4 + 2 ) + ( 0 * ( 0 * 1 ) ) ) numbers = {9,4,8,5,0} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... application of rule 3 produces solution: ( 9 + ( 0 * ( 4 * ( 8 * 5 ) ) ) ) numbers = {8,8,0,7,0} and goal = 0 considering rule 1 ... application of rule 1 produces solution: ( 8 * ( 8 * ( 0 * ( 7 * 0 ) ) ) ) numbers = {0,5,1,8,1} and goal = 9 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 1 + 8 ) + ( 0 * ( 5 * 1 ) ) ) numbers = {2,1,6,0,2} and goal = 4 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... application of rule 4 produces solution: ( ( 2 + 2 ) + ( 1 * ( 6 * 0 ) ) ) numbers = {9,1,6,4,0} and goal = 2 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... application of rule 5 produces solution: ( ( 6 - 4 ) + ( 9 * ( 1 * 0 ) ) ) numbers = {4,5,4,5,1} and goal = 5 considering rule 1 ... considering rule 2 ... considering rule 3 ... considering rule 4 ... considering rule 5 ... considering rule 6 ... application of rule 6 produces solution: ( ( 4 + 1 ) + ( ( 5 - 5 ) * 4 ) ) true .