<html>
<head>
<title>Sudoku - RJM Programming - December, 2022</title>
<style>
.bright { border-right: 5px solid black; }
.bbottom { border-bottom: 5px solid black; }
td { font-size: 24px; width: 11%; height: 9%; text-align: center; vertical-align: middle; }
select { font-size: 24px; }
th { text-align: left; }
</style>
<script type='text/javascript'>
var hrecs=['','','','','','','','',''];
var lines=['','','','','','','','',''];
var squares=['','','','','','','','',''];
var mustbeguessed=location.search.split('mustbeguessed=')[1] ? decodeURIComponent(location.search.split('mustbeguessed=')[1].split('&')[0]) : '';
var mustnotbeguessed=location.search.split('mustnotbeguessed=')[1] ? decodeURIComponent(location.search.split('mustnotbeguessed=')[1].split('&')[0]) : '';
var gls=getls();
var stemp="<select data-answer=\" \" id=xxx><option value=\" \"> </option><option value='1'>1</option><option value='2'>2</option><option value='3'>3</option><option value='4'>4</option><option value='5'>5</option><option value='6'>6</option><option value='7'>7</option><option value='8'>8</option><option value='9'>9</option></select>";
var okay=false;
var goes=0;
var easyarr=',3,4,7,10,12,14,15,19,20,27,28,29,30,32,34,39,41,44,45,49,51,52,55,57,59,61,67,68,70,71,74,75,76,80,';
var hardarr=',1,5,8,9,13,19,21,28,33,36,37,39,43,49,52,54,61,62,63,67,69,70,72,80,';
var ipuzzle=-1;
var puzzles=[
'684159732751832946923674185192365874845217693367498251239746518516983427478521369',
'436128759951746283872359416785914362213675894694283571528491637167532948349867125',
'647538192953261478281497653865729314394185267712643985128974536576312849439856721',
'974613528583427691612598734135976842867142953249385167351864279428759316796231485',
'271456893856139724349827156638294517925371468417685239183942675592768341764513982',
'842359761137684952956271384679138425523467198481592673795813246364725819218946537',
'765293481124786359839514267257138946916425738348679125681347592492851673573962814',
'167534289589712463324896571892367154471925836635148927748651392253479618916283745',
'731265894645983172829471536417639258263854719598127463354792681982516347176348925',
'253947168967831254481562937749653821625418379138279645512786493876394512394125786',
'615927438478563291293184765136452879957318624842796153729831546361245987584679312',
'485719362937264815612583794269456173378126549154937628543672981896341257721895436'];
//ipuzzle=Math.floor(Math.random() * puzzles.length);

function dependingdo(ans, iqs) {
var jqs=eval(1 + eval('' + iqs));
if (document.URL.indexOf('hard=') != -1) { // hard
document.getElementById('smode').value='hard';
if (hardarr.indexOf(',' + iqs + ',') != -1 || document.URL.indexOf('extremelyeasy=') != -1) {
return ans + stemp.replace('xxx','s' + iqs).replace(' value=" "',' value="' + ans + '"').replace(' data-answer=" "',' style=display:none; data-answer="' + ans + '"').replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
} else {
return stemp.replace('xxx','s' + iqs).replace(' data-answer=" "',' data-answer="' + ans + '"'); //.replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
}
} else if (mustbeguessed.trim() != '' && mustnotbeguessed.trim() != '') {
document.getElementById('smode').value='tailored';
if (((',' + mustbeguessed.trim() + ',').indexOf(',' + jqs + ',') == -1 || (',' + mustnotbeguessed.trim() + ',').indexOf(',' + jqs + ',') != -1) || document.URL.indexOf('extremelyeasy=') != -1) {
return ans + stemp.replace('xxx','s' + iqs).replace(' value=" "',' value="' + ans + '"').replace(' data-answer=" "',' style=display:none; data-answer="' + ans + '"').replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
} else {
return stemp.replace('xxx','s' + iqs).replace(' data-answer=" "',' data-answer="' + ans + '"'); //.replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
}
} else if (mustbeguessed.trim() != '' && mustnotbeguessed.trim() == '') {
document.getElementById('smode').value='tailored';
if ((',' + mustbeguessed.trim() + ',').indexOf(',' + jqs + ',') == -1 || document.URL.indexOf('extremelyeasy=') != -1) {
return ans + stemp.replace('xxx','s' + iqs).replace(' value=" "',' value="' + ans + '"').replace(' data-answer=" "',' style=display:none; data-answer="' + ans + '"').replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
} else {
return stemp.replace('xxx','s' + iqs).replace(' data-answer=" "',' data-answer="' + ans + '"'); //.replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
}
} else if (mustbeguessed.trim() == '' && mustnotbeguessed.trim() != '') {
document.getElementById('smode').value='tailored';
if ((',' + mustnotbeguessed.trim() + ',').indexOf(',' + jqs + ',') != -1 || document.URL.indexOf('extremelyeasy=') != -1) {
return ans + stemp.replace('xxx','s' + iqs).replace(' value=" "',' value="' + ans + '"').replace(' data-answer=" "',' style=display:none; data-answer="' + ans + '"').replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
} else {
return stemp.replace('xxx','s' + iqs).replace(' data-answer=" "',' data-answer="' + ans + '"'); //.replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
}
} else { // easy
if (easyarr.indexOf(',' + iqs + ',') != -1 || document.URL.indexOf('extremelyeasy=') != -1) {
return ans + stemp.replace('xxx','s' + iqs).replace(' value=" "',' value="' + ans + '"').replace(' data-answer=" "',' style=display:none; data-answer="' + ans + '"').replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
} else {
return stemp.replace('xxx','s' + iqs).replace(' data-answer=" "',' data-answer="' + ans + '"'); //.replace('>' + ans + '<',' selected>' + ans + '<').replace('>', ' disabled>');
}
}
}

function newgame() {
var j, k, tds=document.getElementsByTagName('td'), m=-1, isq=-1;
hrecs=['','','','','','','','',''];
lines=['','','','','','','','',''];
squares=['','','','','','','','',''];
for (var i=0; i<tds.length; i++) {
if (eval(i % 9) == 0) { m++; }
if (eval(i % 3) == 0) { isq++; }
if (eval(i % 9) == 0) { isq=eval(Math.floor(eval(i / 27)) * 3); }
//console.log('i=' + i + ' leads to isq=' + isq);
hrecs[i]='';
if (eval('' + ipuzzle) >= 0) {
j=eval(puzzles[ipuzzle].substring(i).substring(0,1));
} else {
j=Math.min(9,eval(Math.floor(Math.random() * 9) + 1));
}
k=0;
while (hrecs[m].indexOf('' + j) != -1 || lines[eval(i % 9)].indexOf('' + j) != -1 || squares[isq].indexOf('' + j) != -1) {
j=Math.min(9,eval(Math.floor(Math.random() * 9) + 1));
k++;
if (eval('' + k) > 30) { goes++; document.title+='' + goes; if (1 == 1) { console.log(goes + ' at i=' + i + ' hrecs[0]=' + hrecs[0] + ' hrecs[1]=' + hrecs[1] + ' hrecs[2]=' + hrecs[2]); } return false; }
}
tds[i].title='Square number ' + eval(1 + eval('' + i));
tds[i].innerHTML=dependingdo('' + j, i);
hrecs[m]+='' + j;
lines[eval(i % 9)]+='' + j;
squares[isq]+='' + j;
}
//alert(squares[0] + ' ... ' + squares[1]);
document.getElementById('mytable').style.cursor='pointer';
return true;
}

function checksels() {
var isok=true;
var sels=document.getElementsByTagName('select');
for (var jj=0; jj<sels.length; jj++) {
if (('' + sels[jj].id) != 'smode') {
if (sels[jj].value.trim() == '') { alert('Not solved yet'); return false; }
if (sels[jj].outerHTML.indexOf(' data-answer="' + sels[jj].value + '"') == -1) { alert('Not solved yet'); return false; }
}
}
alert('Congratulations!');
return true;
}

function askmaybe(indef) {
var tans='';
var tpars='';
if (indef.indexOf('tailored=') == 0) {
tans=prompt('Using square numbers of 9x9 grid from 1 to 81, specify in comma separated list, where prefixed by minus would be pre-answered else represents squares to be answered, for Sudoku game to follow. To remember for the future involve leading or trailing spaces. Involve an x to delete any pre-existing saved tailored Sudoku game configurations.', '');
if (tans == null) { tans=''; }
var atansarr=tans.replace(/x/g,'').replace(/X/g,'').split(',');
if (gls!= '' && tans.toLowerCase().indexOf('x') != -1) {
window.localStorage.removeItem('sudokudefs');
gls='';
}
for (var it=0; it<atansarr.length; it++) {
if (('' + atansarr[it]).trim() != '') {
if (('' + atansarr[it] + ' ').indexOf('-') == 0) {
if (tpars.indexOf('mustnotbeguessed=') == -1) { tpars+='&mustnotbeguessed=' + atansarr[it].trim().substring(1); } else { tpars=tpars.replace('&mustnotbeguessed=', '&mustnotbeguessed=' + atansarr[it].trim().substring(1) + ','); }
} else {
if (tpars.indexOf('mustbeguessed=') == -1) { tpars+='&mustbeguessed=' + atansarr[it].trim(); } else { tpars=tpars.replace('&mustbeguessed=', '&mustbeguessed=' + atansarr[it].trim() + ','); }
}
}
}
if (tpars != '') {
if (tans.trim() != tans) {
if (getls() != '') {
window.localStorage.removeItem('sudokudefs');
}
window.localStorage.setItem('sudokudefs', encodeURIComponent(tpars.substring(1)));
}
return tpars.substring(1);
}
}
return indef;
}

function getls() {
return decodeURIComponent(('' + window.localStorage.getItem('sudokudefs')).replace(/^undefined/g,'').replace(/^null/g,''));
}

function checkls() {
if (gls != '' && document.URL.indexOf('?') == -1) {
location.href=document.URL.split('#')[0].split('?')[0] + '?' + gls;
}
}
</script>
</head>
<body onload="checkls(); while (!okay) { okay=newgame(); }">
<table><tr id="ourrow"><th id="onleft">
<h1>Sudoku <select id="smode" onchange="location.href=document.URL.split('?')[0].split('#')[0] + '?' + askmaybe(this.value + '=' + this.value);"><option value='easy'>Easy</option><option value=hard>Hard</option><option value='tailored'>Tailored</option></select></h1>
<h3>RJM Programming - December, 2022 <span id="semojis"></span></h3>
</th></tr></table>

<table id=mytable style='width:95%;height:81%;cursor:progress;background-color:#f0f9f2;' border=5>
<tr id=tr1of9><td id=td11></td><td id=td21></td><td id=td31 class=bright></td><td id=td41></td><td id=td51></td><td id=td61 class=bright></td><td id=td71></td><td id=td81></td><td id=td91></td></tr>
<tr id=tr2of9><td id=td12></td><td id=td22></td><td id=td32 class=bright></td><td id=td42></td><td id=td52></td><td id=td62 class=bright></td><td id=td72></td><td id=td82></td><td id=td92></td></tr>
<tr id=tr3of9><td id=td13 class=bbottom></td><td id=td23 class=bbottom></td><td id=td33 class="bright bbottom"></td><td id=td43 class=bbottom></td><td id=td53 class=bbottom></td><td id=td63 class="bright bbottom"></td><td id=td73 class=bbottom></td><td id=td83 class=bbottom></td><td id=td93 class=bbottom></td></tr>
<tr id=tr4of9><td id=td14></td><td id=td24></td><td id=td34 class=bright></td><td id=td44></td><td id=td54></td><td id=td64 class=bright></td><td id=td74></td><td id=td84></td><td id=td94></td></tr>
<tr id=tr5of9><td id=td15></td><td id=td25></td><td id=td35 class=bright></td><td id=td45></td><td id=td55></td><td id=td65 class=bright></td><td id=td75></td><td id=td85></td><td id=td95></td></tr>
<tr id=tr6of9><td id=td16 class=bbottom></td><td id=td26 class=bbottom></td><td id=td36 class="bright bbottom"></td><td id=td46 class=bbottom></td><td id=td56 class=bbottom></td><td id=td66 class="bright bbottom"></td><td id=td76 class=bbottom></td><td id=td86 class=bbottom></td><td id=td96 class=bbottom></td></tr>
<tr id=tr7of9><td id=td17></td><td id=td27></td><td id=td37 class=bright></td><td id=td47></td><td id=td57></td><td id=td67 class=bright></td><td id=td77></td><td id=td87></td><td id=td97></td></tr>
<tr id=tr8of9><td id=td18></td><td id=td28></td><td id=td38 class=bright></td><td id=td48></td><td id=td58></td><td id=td68 class=bright></td><td id=td78></td><td id=td88></td><td id=td98></td></tr>
<tr id=tr9of9><td id=td19></td><td id=td29></td><td id=td39 class=bright></td><td id=td49></td><td id=td59></td><td id=td69 class=bright></td><td id=td79></td><td id=td89></td><td id=td99></td></tr>
</table>
<br><button style=background-color:yellow; onclick=checksels();>Check My Answers</button> <button style=background-color:orange; onclick='location.href=document.URL;'>New Game</button>
</body>
</html>