predicate all_different_int(array [int] of var int: x);
predicate count(array [int] of var int: x, var int: y, var int: c);
predicate fixed_cumulative(array [int] of var int: s, array [int] of int: d, array [int] of int: r, int: b);
predicate global_cardinality(array [int] of var int: x, array [int] of int: cover, array [int] of var int: counts);
predicate maximum_int(var int: m, array [int] of var int: x);
predicate minimum_int(var int: m, array [int] of var int: x);
predicate sliding_sum(int: low, int: up, int: seq, array [int] of var int: vs);
predicate sort(array [int] of var int: x, array [int] of var int: y);
predicate table_bool(array [int] of var bool: x, array [int, int] of bool: t);
predicate table_int(array [int] of var int: x, array [int, int] of int: t);
predicate var_cumulative(array [int] of var int: s, array [int] of int: d, array [int] of int: r, var int: b);
array [1..6] of var 1..9: from :: output_array([1..6]);
array [1..6] of var 1..6: permutation :: output_array([1..6]);
array [1..6] of var 1..9: to :: output_array([1..6]);
constraint all_different_int(permutation);
constraint array_var_int_element(permutation[1], to, from[1]);
constraint array_var_int_element(permutation[2], to, from[2]);
constraint array_var_int_element(permutation[3], to, from[3]);
constraint array_var_int_element(permutation[4], to, from[4]);
constraint array_var_int_element(permutation[5], to, from[5]);
constraint array_var_int_element(permutation[6], to, from[6]);
constraint int_eq(1, from[1]);
constraint int_eq(1, from[3]);
constraint int_eq(1, from[6]);
constraint int_eq(1, permutation[2]);
constraint int_eq(1, to[2]);
constraint int_eq(1, to[3]);
constraint int_eq(1, to[6]);
constraint int_eq(2, from[5]);
constraint int_eq(2, permutation[6]);
constraint int_eq(2, to[4]);
constraint int_eq(3, permutation[3]);
constraint int_eq(4, permutation[5]);
constraint int_eq(5, from[4]);
constraint int_eq(5, permutation[4]);
constraint int_eq(5, to[5]);
constraint int_eq(6, permutation[1]);
constraint int_eq(9, from[2]);
constraint int_eq(9, to[1]);
solve satisfy;