let value1 = 0;
let flip = 0;
let picture1, picture2;
let ary = new Array(17);

for (i = 0; i < ary.length; i++) {
    ary[i] = [];
    ary[i][1] = 0;
}
for (i = 1; i < 9; i++) {
    ary[i][0] = i;
}
for (i = 1; i < 9; i++) {
    ary[i + 8][0] = i;
}

function memory(ns) {
    if (ary[ns][1] == 0 && ary[ns][1] == 0) {
        if (value1 == 0) {
            picture1 = ns;

        } else {
            picture2 = ns;
        }
        if (value1 < 2) {
            document.images[ns].src = 'imgPK/' + ns + '.png';
        }
        value1 = value1 + 1
        if (value1 == 2) {
            let temp = setTimeout("proof()", 500);
            value1 = 0;
        }
    }
}

function proof() {
    counter();
    if (ary[picture1][0] == ary[picture2][0]) {
        ary[picture1][1] = 1;
        ary[picture2][1] = 1;

    } else {
        close(picture1);
        close(picture2);
    }
}

function close(s) {
    document.images[s].src = 'imgPK/Logo.png';
}

function counter() {
    flip = flip + 1;
    document.getElementById('Flipper').innerHTML = 'Flip: ' + flip;
}