user550: Before I begin, I'm not asking about people playing "Blindfold chess", but those who are actually blind.
Reading through the FIDE rules of chess like any good player should, I've previously noticed the section containing rules for players who are visually handicapped. I never really paid this any attention before other than to note how difficult it must be to both learn the game (containing as it does complex spatial movements and a large amount of information to be kept in the head if it cannot be seen) and to study it (most learning resources being books that are probably nowhere near popular enough to be made 'accessible'). 
Just recently I started thinking about this, and I'd like to know a bit more about this aspect of the game, but information is rather hard to find. To begin with, How strong are the strongest blind chess players in comparison to those without disability? Ideally we'd be talking about people using the same scale (i.e. theoretically entering the same 'ordinary' tournament with perhaps minor allowances for the games of the disabled person, and needing to have comparable Elo ratings, etc.), though if there's a separate rating system that information would be useful too.
On a related note, Have there been any blind players notable for their strength or players they have faced?

user12402: I played a blind player with a high expert rating in the 1970s.  He said that going blind cost him about 200 rating points.  His play was very strong but then he would miss things that I don't think a sighted player would.

user11749: At the 15th IBCA Chess Olympiad for Blind and Visually Impaired Chess Players 2017, the best player was the polish GM Marcin Tazbir (2525 in April 2018).  
Here is the list of the 10 best rated players in this event.

GM  Tazbir Marcin   1122452 2514    POL POLAND 
Smirnov Alexey  4168437 2427    RUS RUSSIA
IM  Tuka  Oleg  14114453    2407    UKR UKRAINE
IM  Pakhomov
    Alexey  4129016 2350    RUS RUSSIA 
FM  Dimic        Pavle  937428  2349    SRB SERBIA 
FM  Babarykin    Stanislav  4101898 2332    RUS RUSSIA 
IM  Meshkov Yuri      A.    4107101 2328    RUS RUSSIA 
FM  Suslov    Evgeniy   24149411    2313    RUS RUSSIA 
IM  Nikac    Predrag    908975  2308    MNE MONTENEGRO
FM Magnusson       Jorgen  1700880 2290    SWE SWEDEN


user70: According to this link, the World Blind chess championship includes IM-strength players.
A separate rating system isn't used but one cannot accurately compare ratings from two different player pools.
According to this link, the 2009 Blind US champion was a USCF Expert.
Roughly, I'd say being blind costs 600 rating points. Why? An USCF Expert is around 2100, the USCF National champion is about 2800, so subtraction gives 700. Similarly, a super-GM has about 450 more ELO points than an IM (2400 vs 2850)  700... 450... call it 600...)

user2258: I believe Stanislav Babarykin is the current (or former) world champion among blind chess players and his rating is around 2350.
In my country India, arguably the strongest (blind) player is Darpan Inani (rated 2041).
So while the current strongest blind chess players are not in the GM category, it is also the case that there are very few such players.

550: <p>Before I begin, I'm not asking about people playing "Blindfold chess", but those who are actually blind.</p>

<p>Reading through the FIDE rules of chess like any good player should, I've previously noticed the section containing rules for players who are visually handicapped. I never really paid this any attention before other than to note how difficult it must be to both learn the game (containing as it does complex spatial movements and a large amount of information to be kept in the head if it cannot be seen) and to study it (most learning resources being books that are probably nowhere near popular enough to be made 'accessible'). </p>

<p>Just recently I started thinking about this, and I'd like to know a bit more about this aspect of the game, but information is rather hard to find. To begin with, <strong>How strong are the strongest blind chess players in comparison to those without disability?</strong> Ideally we'd be talking about people using the same scale (i.e. theoretically entering the same 'ordinary' tournament with perhaps minor allowances for the games of the disabled person, and needing to have comparable Elo ratings, etc.), though if there's a separate rating system that information would be useful too.</p>

<p>On a related note, <strong>Have there been any blind players notable for their strength or players they have faced?</strong></p>
 12402: <p>I played a blind player with a high expert rating in the 1970s.  He said that going blind cost him about 200 rating points.  His play was very strong but then he would miss things that I don't think a sighted player would.</p>
 11749: <p>At the <a href="http://chess-results.com/tnr281869.aspx?lan=1&amp;art=2&amp;rd=1&amp;turdet=YES&amp;flag=30" rel="nofollow noreferrer">15th IBCA Chess Olympiad for Blind and Visually Impaired Chess Players 2017</a>, the best player was the polish GM <a href="https://ratings.fide.com/card.phtml?event=1122452" rel="nofollow noreferrer">Marcin Tazbir</a> (2525 in April 2018).  </p>

<p><a href="http://chess-results.com/tnr281869.aspx?lan=1&amp;art=16&amp;turdet=YES&amp;flag=30" rel="nofollow noreferrer">Here</a> is the list of the 10 best rated players in this event.</p>

<ol>
<li>GM  Tazbir Marcin   1122452 2514    POL POLAND </li>
<li>Smirnov Alexey  4168437 2427    RUS RUSSIA</li>
<li>IM  Tuka  Oleg  14114453    2407    UKR UKRAINE</li>
<li>IM  Pakhomov
    Alexey  4129016 2350    RUS RUSSIA </li>
<li>FM  Dimic        Pavle  937428  2349    SRB SERBIA </li>
<li>FM  Babarykin    Stanislav  4101898 2332    RUS RUSSIA </li>
<li>IM  Meshkov Yuri      A.    4107101 2328    RUS RUSSIA </li>
<li>FM  Suslov    Evgeniy   24149411    2313    RUS RUSSIA </li>
<li>IM  Nikac    Predrag    908975  2308    MNE MONTENEGRO</li>
<li>FM Magnusson       Jorgen  1700880 2290    SWE SWEDEN</li>
</ol>
 70: <p>According to <a href="http://www.uschess.org/content/view/12608/760" rel="nofollow">this link</a>, the World Blind chess championship includes IM-strength players.</p>

<p>A separate rating system isn't used but one cannot accurately compare ratings from two different player pools.</p>

<p>According to <a href="http://www.chess.com/forum/view/general/who-is-the-highest-rated-blind-chess-player" rel="nofollow">this link</a>, the 2009 Blind US champion was a USCF Expert.</p>

<p>Roughly, I'd say being blind costs 600 rating points. Why? An USCF Expert is around 2100, the USCF National champion is about 2800, so subtraction gives 700. Similarly, a super-GM has about 450 more ELO points than an IM (2400 vs 2850)  700... 450... call it 600...)</p>
 2258: <p>I believe Stanislav Babarykin is the current (or former) world champion among blind chess players and his rating is around 2350.</p>

<p>In my country India, arguably the strongest (blind) player is Darpan Inani (rated 2041).</p>

<p>So while the current strongest blind chess players are not in the GM category, it is also the case that there are very few such players.</p>
