document.addEventListener("DOMContentLoaded", ()=>{
    var blocks = Array.from(document.getElementsByClassName("c"));
    var matrix = [];
    for(var i = 0; i < 8; i++){
        var rav = [];
        for(var j = 0; j < 8; j++){
            rav.push(blocks[i*8+j]);
        }
        matrix.push(rav);
    }

    for (var i = 0; i < matrix.length; i++) {
        for (var j = 0; j < matrix[i].length; j++) {
            matrix[i][j].addEventListener("click", (function (ci, cj) {
                return function (){
                    try{
                        var flag = true;
                        if(matrix[ci +1][cj+2].children.length == 0) flag = false;
                        if(matrix[ci -1][cj-2].children.length == 0) flag = false;
                        if(matrix[ci +2][cj+1].children.length == 0) flag = false;
                        if(matrix[ci -2][cj-1].children.length == 0) flag = false;
                        console.log(flag)
                    }catch{}
                }
            })(i , j));
        }
    }
});