275.js

let arr = [[15,7,18,11,19,10,14,16,8,2,3,6,5,1,17,12,9,4,13],[17,15,9,8,11,13,7,6,5,1,3,16,12,19,10,2,4,14,18],[19,14,12,10,8,9,17,16,4,3,13,18,1,5,7,11,2,15,6],[4,2,10,15,19,16,8,9,5,3,1,11,13,14,6,18,12,17,7],[13,19,9,16,5,8,6,12,14,11,18,10,7,2,3,4,15,17,1],[4,7,18,11,17,16,5,12,10,1,15,13,14,6,19,2,3,9,8],[14,5,15,1,18,6,12,7,8,9,3,13,2,10,19,4,11,16,17],[10,3,1,8,14,19,11,18,15,13,9,12,16,17,7,4,5,2,6],[14,13,19,18,7,2,4,8,10,17,12,5,15,1,6,9,11,3,16],[19,8,10,18,16,12,11,17,4,9,7,2,5,13,15,3,6,1,14],[1,10,6,14,7,18,3,9,4,16,5,11,13,17,15,8,19,2,12],[13,10,5,16,1,19,17,3,9,11,7,8,12,6,4,2,14,15,18],[17,2,1,6,9,19,18,14,4,11,12,13,16,5,8,7,3,10,15],[1,4,10,5,13,6,18,11,3,2,15,14,16,12,17,19,8,9,7],[2,14,3,12,16,17,11,9,1,6,5,19,10,13,4,18,7,15,8],[15,9,8,18,14,13,4,12,5,17,6,1,11,16,19,3,7,2,10],[15,8,12,16,13,2,6,19,18,14,10,5,11,9,7,1,3,17,4],[15,6,17,7,5,3,1,9,19,12,10,11,16,14,18,8,2,13,4],[6,11,10,14,2,13,16,1,9,15,8,19,17,3,5,18,7,4,12]]


var checkLine = arr => {
    for (let i = 1; i <= arr.length; i++) {
        if (!arr.includes(i)) return false;
    }

    return true;
}
var checkValid = function(matrix) {
    let n = matrix.length
    for (let i = 0; i < n; i++) {
        if (!checkLine(matrix[i])) return false;
    }

    for (let i = 0; i < n; i++) {
        let arr = [];
        for (let j = 0; j < n; j++) {
            arr.push(matrix[j][i])
        }

        if (!checkLine(arr)) return false;
    }

    return true
};


let res = checkValid(arr);

console.log(res);