WeiGrand

/**
 * Get all solutions of `n queens` problem
 * https://zh.wikipedia.org/wiki/%E5%85%AB%E7%9A%87%E5%90%8E%E9%97%AE%E9%A2%98
 * @param n
 * @returns {*}
 * @constructor
 */
const Nqueens = n => {
  if (typeof n !== 'number') {
    console.warn('Expect `n` to be a number got ' + typeof n + '.');

WeiGrand

const a1 = {name: 'a1', child: null, sibling: null, return: null};
const b1 = {name: 'b1', child: null, sibling: null, return: null};
const b2 = {name: 'b2', child: null, sibling: null, return: null};
const b3 = {name: 'b3', child: null, sibling: null, return: null};
const c1 = {name: 'c1', child: null, sibling: null, return: null};
const c2 = {name: 'c2', child: null, sibling: null, return: null};
const d1 = {name: 'd1', child: null, sibling: null, return: null};
const d2 = {name: 'd2', child: null, sibling: null, return: null};

a1.child = b1;