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LiChess: Learn from your mistakes

en.lichess.org

101–110 of 115 posts

Re: LiChess: Learn from your mistakes

#101
post #62

Most of the times I get this message when I open lichess. Your connection is not private Attackers might be trying to steal your information from en.lichess.org (for example, passwords, messages or credit cards). NET::ERR_CERT_AUTHORITY_INVALID This resolves after 2-3 days and then within a week it again reappears.

That is suspicious. I play on lichess frequently and have never seen an invalid cert there.

Re: LiChess: Learn from your mistakes

#102
post #94

Earlier quoted context omitted.

Yes, but variants are supported in the application, anti-chess, horde, atomic, three-check etc. Agreed, those are not really chess, as the rules or end conditions are significantly changed. But it's like chess960 chess, the pieces are on a different position or there are less pieces and a smaller board. The reason for my wish is that I want to play a small chess game with my son before bed, it should be a bit less da…

Can't you just make this yourself? Why does it have to be a part of the lichess platform?

Why do any rule variants have to be a part of the lichess platform?

Re: LiChess: Learn from your mistakes

#103
post #52

lichess is legitimately one of the most impressive web applications I've seen and used. I've never been a big fan of playing chess, but I discovered the site several months ago, and it allowed me to get into the game in a way that I thought I never would. It started with the tactical puzzles. They're derived algorithmically (using Stockfish analysis) from games actually played on the website. This alone is fascinatin…

Very cool project, I was blown away by this feature.

Did stumble upon a bug though. I had three puzzles which I thought were buggy. I forgot the URL and details on the first one (so it may or may not been buggy), and I was flat out wrong about the second one (a bishop was making sure a horse couldn't move which I thought could be used to take the piece supposedly causing checkmate).

My third one though is clearly buggy: https://en.lichess.org/training/61461

Its not over when the game says victory. Black has 4 (! EDIT: 3, but still) ways to avoid the checkmate, and Stockfish also suggests these moves.

Nevertheless a very nice project, including Stockfish integration. I can't repeat that enough! App of the year for me.

Re: LiChess: Learn from your mistakes

#104
post #42

Earlier quoted context omitted.

Sorry, but this makes my head hurt. >>> best chess engines are still worse at analyzing openings than humans. >> Is that actually the case, or perhaps humans try a lot of sub-optimal opening lines? > Sub optimal from the perspective of the AI There's no perspective involved: optimal play is perfect play, assuming the opponent also plays perfectly. If a move is sub-optimal for White that means White has a better move,…

Of course there's perspective involved. Restricting yourself to perfect opponents is very silly firstly, because there are no perfect opponents because chess is unsolved. So right out of the gate our definition assumes the counterfactual for all chess games every played and is both inaccurate (does not describe actual chess) and impractical (cannot be implemented) Secondly, if there were such an opponent (which is no…

You're going off a tangent here. There's nothing in my argument that relies on having an optimal opponent only; forget about the "assuming the opponent also plays perfectly" part for a moment, the key part is getting the best move no matter what the opponent plays.

Re: LiChess: Learn from your mistakes

#105

LiChess is one of the most amazing hosted platforms out there, it's very fast, it has a minimalistic design, it has no ads and does the thing that it does very well. Furthermore they sympathetically state: "Lichess mobile is developed and translated to 80 languages by volunteers. Just like the website, it's 100% free forever, and there will never be advertisements. This is humanist software, made open source for the…

>new variant to change the chess rules to accommodate a smaller board 5x6, 4x5 or 6x6 for even shorter games. That makes no sense. You can have games as short as you want. Just play using a different time control. I play 1+2 (minute plus seconds) and those games last 2 to 3 minutes at most. BTW with variants, you're not really playing chess anymore. You're playing a different game with chess pieces. Not all the strat…

I don't like time control, I can't handle the stress behind that.

Re: LiChess: Learn from your mistakes

#106
post #103
post #52

lichess is legitimately one of the most impressive web applications I've seen and used. I've never been a big fan of playing chess, but I discovered the site several months ago, and it allowed me to get into the game in a way that I thought I never would. It started with the tactical puzzles. They're derived algorithmically (using Stockfish analysis) from games actually played on the website. This alone is fascinatin…

Very cool project, I was blown away by this feature. Did stumble upon a bug though. I had three puzzles which I thought were buggy. I forgot the URL and details on the first one (so it may or may not been buggy), and I was flat out wrong about the second one (a bishop was making sure a horse couldn't move which I thought could be used to take the piece supposedly causing checkmate). My third one though is clearly bug…

I don't think the goal of that puzzle is to achieve checkmate. "Victory" just means you solved the puzzle, not that the game is over.

The goal is just to find the most optimal move given the board configuration. In that particular position, white can use its knight to simultaneously attack the black king and queen. Since the king is more important, it must be moved, effectively forcing black to sacrifice their queen. So the goal of that puzzle isn't to checkmate black, but to use a temporary check against black to capture the black queen (at the cost of a white knight -- still a worthwhile exchange, since the queen is much more powerful than a knight).

Re: LiChess: Learn from your mistakes

#107
post #81

Can someone recommend excellent books and/or tutorials to learn chess? I know only basic rules, but no tactics/strategy/opening/etc.

for books starting from scratch or nearly from scratch, I have enjoyed the "winning chess" series by Yasser Seirawan

Re: LiChess: Learn from your mistakes

#108
post #72
post #10

> I tested the new feature on my favorite opening: 1.e4 e5 2.f4!, a.k.a. the mighty King Gambit. Stockfish hates it, and asked me to review it like it was a mistake! Yet it's considered playable. Actually Carlsen played it against Arionian in 2015. Not acceptable, Mr Stockfish! Actually, the King's Gambit has been (essentially) solved: https://en.chessbase.com/post/rajlich-busting-the-king-s-gam... There is only one…

> Actually, the King's Gambit has been (essentially) solved: https://en.chessbase.com/post/rajlich-busting-the-king-s-gam... . > There is only one move that doesn't lose by force after 2. ... exf4, and that is the strange-looking 3. Be2. Does that mean this opening is a "mistake"? Well, maybe not, obviously a human wouldn't know the perfect lines, but personally I wouldn't play it :) It was an April Fools Prank. Appa…

What gives it away as a prank? I surely couldn't tell. Anything more than the reference to March 31?

Re: LiChess: Learn from your mistakes

#109
post #62

Most of the times I get this message when I open lichess. Your connection is not private Attackers might be trying to steal your information from en.lichess.org (for example, passwords, messages or credit cards). NET::ERR_CERT_AUTHORITY_INVALID This resolves after 2-3 days and then within a week it again reappears.

Maybe an expired certificate? -- is your OS fully patched/updated?

Re: LiChess: Learn from your mistakes

#110
post #2

It's interesting that even the best chess engines are still worse at analyzing openings than humans.

Is that actually the case, or perhaps humans try a lot of sub-optimal opening lines?

I think the case is more that opening theory is very deep. A computer without an opening book is having to work out what humans have spent hundreds of years learning/memorizing. It may also be that since the eval function of an AI can skip opening/endgame with tables, it doesn't need to focus on some of those concepts as much in favor of being optimized for general midgame positions
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