Answers.Body: <p><strong>No.</strong></p>
  
  <p>Chess computers are now fantastically strong. To put things in perspective:</p>
  
  <ul>
  <li>In 2006, then undisputed world champion Kramnik lost a match against Deep Fritz.</li>
  <li>Four years later, in 2010, Deep Fritz had been further developed into Deep Rybka 4. If you look at <a href="https://en.wikipedia.org/wiki/Fritz_%28chess%29#History" rel="noreferrer">Wikipedia's page on Fritz</a>, Deep Fritz was over a hundred elo weaker than Deep Rybka 3, and Deep Rybka 4 improved even further.</li>
  <li>In February this year, <a href="https://www.youtube.com/watch?v=NaQ1gzX_gNo" rel="noreferrer">Stockfish 9 had improved to the point where it was able to crush Deep Rybka 4</a> with a score of 10-0 in a 10-game match.</li>
  <li>The latest version of Stockfish is itself <a href="https://nextchessmove.com/dev-builds" rel="noreferrer">~50 elo stronger than Stockfish 9</a>. To put it in game terms, Alphazero's score vs. Stockfish 8, +155 -6 =839, was an elo difference of about 50.</li>
  </ul>
  
  <p>In other words, Stockfish 10 crushes Stockfish 9 crushes Deep Rybka 4 crushes Deep Fritz which beat Kramnik. There's only one conclusion from this. Realistically, humans have no chance, and would be lucky to even draw a game.</p>
  
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Answers.Body: <p>In contrast to Rauan Sagit, I'm going to offer some reasons I think any human should (assuming they don't get lucky and play some computer-level games themselves) lose such a match. </p>
  
  <ul>
  <li>Elo differential: As of Nov.15, 2014, the highest-ranked engine on <a href="http://www.computerchess.org.uk/ccrl/4040/" rel="noreferrer">CCRL 40/40</a> is Komodo with an Elo of 3303 on relatively modest hardware of an Athlon 64 X2 4600+ 2.4 GHz (Engine ratings were initially based on human ones, but you could debate how relevant it is to compare the two. We have no other metrics, though, so I'm going with this). The all time peak rating was Carlsen's 2882 - let's use him as our example and assume he is able to play consistently at a 2882 rating level. This is a differential of 421, and the central observation of the Elo rating system is that a rating difference of 400 points should correlate to a <strong>95% probability of the higher rated player winning</strong> (not counting the possibility of draws). Top GM games draw around 50% of the time, meaning that even if this rate stays the same, Carlsen will be fighting for draws with no practical possibility to push for a win. This means that, <em>at best</em>, you would be expecting him to stand a chance of <em>just</em> winning the match with him playing at a peak level consistently throughout the match.</li>
  <li>Time control: If the time control is short, humans are likely to blunder when at best computers will make sub-optimal positional choices. If the games are long, it becomes very hard for the human player to remain consistent until the end of the match.</li>
  <li>The engine (assuming the people setting it up actually want it to win) would have it's 'contempt for draws' set really high, meaning it would keep pushing on until the human cracked.</li>
  <li>The psychology of such a match (assuming that there is enough of a prize/prestige for the human to be taking it seriously) can be really taxing on the human player. Kasparov-Deep Blue were 6-game matches and Kasparov was finding to hard to maintain his mindset and mental stamina well before the end of these. Of course, there were other factors at play at the time, but a 10-game classical control match is very taxing.</li>
  </ul>
  
  <p>I'd also point out that Rauan's last paragraph suggest a modification that would likely make it <em>too</em> easy for a human player to win. keeping the computer's calculated advantage relatively low after 30 moves should not be too difficult with appropriate opening choices. I think a better adjustment would be that if the score is 0.00 +- 0.05 for at least 5 ply <em>and</em> the human offers a draw, the machine must accept. Either that, or make the match take place over a long period of time, with one game every 3 months or so (in amongst other tournaments) to prevent fatigue.</p>
  
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Answers.Text: Just a note about the time controls: the settings of the computer affect a lot to their play, and I doubt their positional understanding amounts to something measurable. Check [this game](http://www.chessgames.com/perl/chessgame?gid=1497429).
Answers.UserDisplayName: Pablo S. Ocal
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Answers.UserDisplayName: DTR
Answers.Body: <p>Let's see what happens if we just look at the math.</p>
  
  <p>According to the <a href="http://www.fide.com/fide/handbook.html?id=172&amp;view=article" rel="nofollow noreferrer">FIDE handbook</a>, a rating difference of 422 points would mean the engine would get an average score of about 0.93 per game.  Assuming that the human player is only going to draw and not win, that results in the computer winning about 86% of the time, and the human drawing 14%.</p>
  
  <p>If the computer wins 86% of the time, the computer will win a 10 game match about 99.3% of the time.  About 0.6% of the time, it will be a 5-5 tie, and 0.1% of the time, the human will win.</p>
  
  <p>But this ignores the effect of giving the human the White pieces.  <a href="http://www.robweir.com/blog/2014/01/first-move-advantage-in-chess.html" rel="nofollow noreferrer">This blog</a> suggests the first-move advantage is worth about 35 rating points.  That would put the computer's odds of winning a single game at perhaps 83% instead of 86%.  Using those odds, the computer would win the 10-game match about 98.3% of the time, it would be a 5-5 tie about 1.4% of the time, and the human would win about 0.3% of the time.</p>
  
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Answers.Text: Worth pointing out that engine ratings don't translate to human ratings. They're anchored differently.
Answers.UserDisplayName: Allure
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Answers.UserDisplayName: D M
Answers.Body: <p>Any top human would be annihilated under those conditions. Even a mobile phone can destroy any human in a ten game match even under those conditions.
  The only hope would be those conditions plus give the human an exchange odds in every game.</p>
  
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Answers.UserDisplayName: Danny
Body: <p>What would happen in a 10-game match between one of the strongest human player (Carlsen, Caruana, Aronian, Kramnik or Anand) and one of the strongest engine (Komodo, Stockfish or Houdini), but with the following two conditions:</p>
  
  <ul>
  <li>The human always has the White pieces in every single game.</li>
  <li>The human is given draw odds: a draw is counted as a White win (i.e. in the advent of a draw White gets 1 point and Black gets 0 point).</li>
  </ul>
  
  <p>The games are played at classical time control: 120 minutes for the first 40 moves, 60 minutes for the next 20 moves and then 15 minutes for the rest of the game with an increment of 30 seconds per move starting after move 61 has been made.</p>
  
  <p>The engine is run on a powerful computer, gets 7-piece Lomonosov endgame tablebases, has permanent brain (ponder) on, and has a big opening book designed to avoid getting into drawish positions.</p>
  
Tags: <engines><draw><stockfish><houdini><computer-chess>
Title: Can a human defeat an engine in a 10-game match if he is given the White pieces and draw odds in every game?
ThreadText: # Can a human defeat an engine in a 10-game match if he is given the White pieces and draw odds in every game?
  
  (Asked by: username_0 on 2014-11-16)
  
  What would happen in a 10-game match between one of the strongest human player (Carlsen, Caruana, Aronian, Kramnik or Anand) and one of the strongest engine (Komodo, Stockfish or Houdini), but with the following two conditions:
  
  * The human always has the White pieces in every single game.
  * The human is given draw odds: a draw is counted as a White win (i.e. in the advent of a draw White gets 1 point and Black gets 0 point).
  
  The games are played at classical time control: 120 minutes for the first 40 moves, 60 minutes for the next 20 moves and then 15 minutes for the rest of the game with an increment of 30 seconds per move starting after move 61 has been made.
  
  The engine is run on a powerful computer, gets 7-piece Lomonosov endgame tablebases, has permanent brain (ponder) on, and has a big opening book designed to avoid getting into drawish positions.
  
  **Tags:** engines, draw, stockfish, houdini, computer-chess
  
  
  ---
  
  ## 4 answers
  
  ### Answer by username_1 on 2018-12-07. Score: 7
  
  **No.**
  
  Chess computers are now fantastically strong. To put things in perspective:
  
  * In 2006, then undisputed world champion Kramnik lost a match against Deep Fritz.
  * Four years later, in 2010, Deep Fritz had been further developed into Deep Rybka 4. If you look at [Wikipedia's page on Fritz](https://en.wikipedia.org/wiki/Fritz_%28chess%29#History), Deep Fritz was over a hundred elo weaker than Deep Rybka 3, and Deep Rybka 4 improved even further.
  * In February this year, [Stockfish 9 had improved to the point where it was able to crush Deep Rybka 4](https://www.youtube.com/watch?v=NaQ1gzX_gNo) with a score of 10-0 in a 10-game match.
  * The latest version of Stockfish is itself [~50 elo stronger than Stockfish 9](https://nextchessmove.com/dev-builds). To put it in game terms, Alphazero's score vs. Stockfish 8, +155 -6 =839, was an elo difference of about 50.
  
  In other words, Stockfish 10 crushes Stockfish 9 crushes Deep Rybka 4 crushes Deep Fritz which beat Kramnik. There's only one conclusion from this. Realistically, humans have no chance, and would be lucky to even draw a game.
  
  
  ---
  
  ### Answer by username_2 on 2014-11-16. Score: 5
  
  In contrast to Rauan Sagit, I'm going to offer some reasons I think any human should (assuming they don't get lucky and play some computer-level games themselves) lose such a match.
  
  * Elo differential: As of Nov.15, 2014, the highest-ranked engine on [CCRL 40/40](http://www.computerchess.org.uk/ccrl/4040/) is Komodo with an Elo of 3303 on relatively modest hardware of an Athlon 64 X2 4600+ 2.4 GHz (Engine ratings were initially based on human ones, but you could debate how relevant it is to compare the two. We have no other metrics, though, so I'm going with this). The all time peak rating was Carlsen's 2882 - let's use him as our example and assume he is able to play consistently at a 2882 rating level. This is a differential of 421, and the central observation of the Elo rating system is that a rating difference of 400 points should correlate to a **95% probability of the higher rated player winning** (not counting the possibility of draws). Top GM games draw around 50% of the time, meaning that even if this rate stays the same, Carlsen will be fighting for draws with no practical possibility to push for a win. This means that, *at best*, you would be expecting him to stand a chance of *just* winning the match with him playing at a peak level consistently throughout the match.
  * Time control: If the time control is short, humans are likely to blunder when at best computers will make sub-optimal positional choices. If the games are long, it becomes very hard for the human player to remain consistent until the end of the match.
  * The engine (assuming the people setting it up actually want it to win) would have it's 'contempt for draws' set really high, meaning it would keep pushing on until the human cracked.
  * The psychology of such a match (assuming that there is enough of a prize/prestige for the human to be taking it seriously) can be really taxing on the human player. Kasparov-Deep Blue were 6-game matches and Kasparov was finding to hard to maintain his mindset and mental stamina well before the end of these. Of course, there were other factors at play at the time, but a 10-game classical control match is very taxing.
  
  I'd also point out that Rauan's last paragraph suggest a modification that would likely make it *too* easy for a human player to win. keeping the computer's calculated advantage relatively low after 30 moves should not be too difficult with appropriate opening choices. I think a better adjustment would be that if the score is 0.00 +- 0.05 for at least 5 ply *and* the human offers a draw, the machine must accept. Either that, or make the match take place over a long period of time, with one game every 3 months or so (in amongst other tournaments) to prevent fatigue.
  
  > **Comments:**
  > **username_3**: Just a note about the time controls: the settings of the computer affect a lot to their play, and I doubt their positional understanding amounts to something measurable. Check [this game](http://www.chessgames.com/perl/chessgame?gid=1497429).  
  
  ---
  
  ### Answer by username_4 on 2017-05-27. Score: 3
  
  Let's see what happens if we just look at the math.
  
  According to the [FIDE handbook](http://www.fide.com/fide/handbook.html?id=172&view=article), a rating difference of 422 points would mean the engine would get an average score of about 0.93 per game. Assuming that the human player is only going to draw and not win, that results in the computer winning about 86% of the time, and the human drawing 14%.
  
  If the computer wins 86% of the time, the computer will win a 10 game match about 99.3% of the time. About 0.6% of the time, it will be a 5-5 tie, and 0.1% of the time, the human will win.
  
  But this ignores the effect of giving the human the White pieces. [This blog](http://www.robweir.com/blog/2014/01/first-move-advantage-in-chess.html) suggests the first-move advantage is worth about 35 rating points. That would put the computer's odds of winning a single game at perhaps 83% instead of 86%. Using those odds, the computer would win the 10-game match about 98.3% of the time, it would be a 5-5 tie about 1.4% of the time, and the human would win about 0.3% of the time.
  
  > **Comments:**
  > **username_1**: Worth pointing out that engine ratings don't translate to human ratings. They're anchored differently.  
  
  ---
  
  ### Answer by username_5 on 2018-05-23. Score: 2
  
  Any top human would be annihilated under those conditions. Even a mobile phone can destroy any human in a ten game match even under those conditions.
  The only hope would be those conditions plus give the human an exchange odds in every game.
  
  
  ---
  
  