Initial data commit

Task/N-queens-problem/Python/n-queens-problem-6.py

@@ -0,0 +1,10 @@
+def queens(x, i, a, b, c):
+    if a:  # a is not empty
+        for j in a:
+            if i + j not in b and i - j not in c:
+                yield from queens(x + [j], i + 1, a - {j}, b | {i + j}, c | {i - j})
+    else:
+        yield x
+
+for solution in queens([], 0, set(range(8)), set(), set()):
+    print(solution)