The rarest move in chess

[@swaree]

the right hand bandaged after getting struck by lightning is such a nice detail

[@fili275]

Yes!!!

[@joe_z]

I'm glad that hand survived its injuries.

[@flippa_da_boss9998]

i thought it was after punching the glass in the previous frame

[@joe_z]

No, the left hand punched the glass.

[@flippa_da_boss9998]

@@joe_z i reckon it wouldve suited more

[@chessplayer6632]

The rarest move is me not blundering in bullet

[@HhnUjbf]

0 comments? Let me fix that.

[@stan0033x]

so super grandmasters do rare moves all the time

[@Mr.xDLel124]

@@HhnUjbf 0 replies? Let me fix that.

[@lucky_marz]

+2

[@rainingBrackets]

​@@stan0033x No, because the requirements are that specifically @chessplayer6632 achieves the move

[@Huntracony]

This is the wonderful type of video that accidentally destroys the data it was based on, as this will encourage people to try and be the first person (on Lichess) to do a doubly disambiguated bishop capture checkmate.

[@kayquealbuquerque7213]

If a lot of people do this, he will not need to classify the moves to diferenciate then

[@daniellemurnett2534]

Can't wait for the speedrun leaderboard

[@randmzer]

A job for Eric Rosen!

[@vvitch-mist20]

I don't think so because very specific sets of circumstances have to happen, however it might see an uptick in uses because of this video. No I don't play chess, however he states in the video that things like this happen because the circumstances behind it are rare.

[@ChaeDoc]

Kinda like that Veritasium video about 37.

[@arrizu]

Hikaru played both "doubly disambiguated bishop capture checkmate" & "doubly disambiguated knight capture checkmate" against a random in blitz just after watching this video. Very cool

[@bobSeigar]

Does that mean he was the 666th bishop to do that? Because there were 665 without cm.

[@devilbob]

@@bobSeigar 665 on Lichess. Hikaru plays on Chesscom

[@Anodder1]

So he managed 2 checkmates in a single match? Now that is what I call rare!

[@Domeer42]

​@@Anodder1 he played the sape person twice

[@Shovel_Dad]

@@Domeer42three times he had it set up the first game and took with the wrong knight😂😂😂

[@devilbob]

Wait, hear me out! "Doubly disambiguated bishop non-capture *stalemate* "

[@BetaDude40]

While that would be extremely rare, it would probably be difficult to check for without running the game itself. Standard algebraic notation for chess only includes checks, checkmates, and sometimes draw offers in the actual move notation, with draws recorded separately as the match score at the end. It depends on if lichess records that or not and it would be easy to calculate that score if there were multiple matches in a row and the score were a running total. There is also similar ambiguity for en passant checkmates. There's no standard symbol for an en passant, so we can really only approximate how many checkmates are en passants without just simply playing the entire board (which would be much more time consuming)

[@undine120]

@@BetaDude40 There's only 665 double-disambiguated bishop moves in total. Be pretty easy to check if there's a move after those or not to narrow it down.

[@sylenzos6869]

@@BetaDude40 The lichess database comes with, above the game notation, a flag called "termination" - which is a text string describing what ended the game, so this would actually be not so bad to find out

[@BenAlternate-zf9nr]

"draw by 50-move rule" might be even rarer than stalemate, especially considering under-promotion is involved.

[@sylenzos6869]

@@BenAlternate-zf9nr 50 move rule does necessitate a non-capture however, so i suspect a doubly disambiguated bishop capture timeout vs insufficient material could take longer to achieve

[@pixel_chip0]

i watched this entire thing without realising it was made 30 minutes ago because this feels like a youtube classic that shows up every once in a while and everyone loves them edit: we hit 100 replies, and im leaving this here as a disclaimer. if you ever reply to this saying "hurr durrr the video isnt 30 minutes old" i KNOW. comments AGE. not every comment was posted the minute you read it, so help me god

[@bereketterefe829]

same.

[@purplenanite]

same here!

[@PlayerFILEZero]

same

[@RollingskyEz-ways]

Exactly!

[@zanybrainy794]

Exactly.

[@cheeselord8153]

I feel like the data after this video will forever skewed by people wanting to hunt for rare moves by working with friends

[@whocares2277]

The non-capture doubly disambiguated bishop mate game certainly looks like someone wanted to do that.

[@articasterisk]

oh boy oh boy youve really started a movement now

[@hubert_an]

I think Hikaru next week will crush all of these edge-cases :D

[@channelwithnotopic]

yeah that's me i just did it

[@dominicirla7011]

Like scorigami but for chess moves! Someone should make a website showing all the not yet made moves for people to hunt

[@gharren]

Technically, we could add promotion itself to the complication. So bxa8=Q# would be a capturing pawn move with a queen promotion that causes checkmate.

[@dsgamecube]

And then add underpromotion to make it even more ridiculous!

[@PerfectlyGenericUser]

Promotion is probably a lot less rare than you might think. No possibility of it needing extra disambiguation, and promotions inherently add a lot of extra spaces of control to the board, so getting a checkmate from them isn't that rare. Even underpromotion isn't going to be that much rarer, because the chances of you only needing a single line of attack is very high if you're already in that situation to begin with - why not underpromote for style if you only need the diagonal to win?

[@emilyscloset2648]

Covered in the end stats. But yes, this was my initial guess of rarest move

[@ZacDonald]

@@dsgamecube I imagine underpromotion is a common taunt in promotion checkmates, like why wouldn't you just pick the weakest piece that will do it at that point?

[@ambinaGirly]

I’d say the Pam-Krabbe castling is the rarest move as it was an unintended move that could be made based on how the rules of castling were written and has since been changed to prevent such a loophole thus it is the only move in chess that will ever have a fixed amount of uses compared to the moves you showed which are indeed rare but are still repeatable thus can decrease in rarity over time

[@13x666]

After watching your video, videos without the hands seem weirdly unexpressive

[@EntergeticalakaBot]

Oh no am I going to experience this

[@andrew6341]

Paralogical is gonna have to edit all videos in the future forever now to add hands

[@ChillKillaBeta]

real

[@guyunger]

hey you worked on redungeon right? 😄 one of my favorite mobile games

[@13x666]

@@guyunger I actually did, yes! Thanks a lot, glad you like the game! How did you know though? Don't think the game is even mentioned anywhere in my profile or anything :D

[@rmlgaming2091]

New fear unlocked: being double-disambiguated-bishop-capture-checkmated

[@mattc3581]

New achievement unlocked: Trolling Eric Rosen by resigning the move before he gets to play it

[@RavenPilsen]

do not tell him about stalemates ...

[@イエスサーBR]

Imagine how many of these moves could have been played more if not for resignation​​@@mattc3581

[@ilikecrabsalot]

You could sneak a ...-discovered-... in there to make it cooler 😅

[@RandomGuy77676]

Amount of doubly disambiguated bishop capture checkmates after this video: 📈📈📈

[@pronoob7296]

True. I already did one after stalling for 90 moves against a computer. I tried to make it look nice.

[@The_Serious_Chicken]

Stonks

[@SkreepGaming]

I did it also

[@NOTNOTJON]

@@SkreepGaming Ah, I see we've entered the Schrödinger's dataset conundrum.

[@IamGrimalkin]

@@pronoob7296 Was this a game with the 50-move rule disabled? I assume this is taken from real lichess games, not custom stuff.

[@avalonwasNotHere]

I love the little detail of the hand having a little bandage after getting struck by lightning

[@narayanaece86]

Your dumb ye u

[@jan_Eten]

oh hey a fellow osc member

[@dialog_box]

ok an insane amount of love and care went into this video, and into details that almost NO ONE would ever notice. check this out. at 11:25 he actually can't add anymore lines to this list without overlapping with the little data box graphic. but instead of the obvious option of just having the box fade out or slide off screen or something, the box vanishes while it is hidden behind the image coming on screen at 11:32! that was such an unnecessary detail that he went out of his way to do!!

[@bravv-o]

Wow. It's a nice detail, but it's outright impressive that you noticed such a thing. You're like the most attentive viewer on youtube lol

[@dialog_box]

@@bravv-o i just have a passion for editing and like to analyze how people solve problems :p

[@МихайлоСамотос-з1р]

Craaazyy

[@andrewbernhardt4292]

That is very observant! But why couldn't the box just stay in the background? I don't understand that.

[@BananaWasTaken]

@@andrewbernhardt4292 because then the next lines wouldn’t be visible. The pie chart graphic shows up at 11:32 and then the second graphic at 11:33 comes and the box disappears. So at 11:47 when new lines show up there’s space for them (without the text having to go in front of or behind the box, both of which aren’t as neat a solution)

[@matejsramek3195]

I LOVE the little details in this video. The little right hand gets struck by lightning @10:26 and when it appears again @10:54 it has a bandage over it.

[@iexiste1188]

THAT’S SO CUTE WAIT 😭😭😭

[@KKPMONSTA]

Yes

[@L1M.L4M]

I saw that too

[@kelinimo]

I think it was because it hit glass at 10:43

[@mdfan77]

@@kelinimo The left hand hit the glass, the right (bandaged) hand got struck by lighting.

[@RadicalCaveman]

I cannot believe how nerdy this video is. Well done.

[@GalaxySid]

The editing is insane. So many small and often funny details. Great style, great timing... I love it!

[@SmartGamer1234]

Just wait until all of these numbers spike after this…

[@KimMilvang]

Totally agree, this is like achievements in games. It was very clear that the discovered double disambiguation checkmate, was indeed the two players working together to produce that result. With the number of views that video gets, it becomes likely that someone will try to produce them.

[@Diban-CommentateurFootball]

​@@KimMilvangI think it was just a guy toying with the other

[@wsleppy4699]

​@@KimMilvangNo that was someone griefing. He probably delivered checkmate with one second on the clock..... I do it with knights lol. Apparently I need to configure them better so the last move is doubly disambiguated capture mate 😂

[@Maou3]

See, the thing is, Eric Rosen is probably gonna see this and go hunting (given Rosen trophies)

[@paralogical-dev]

maybe if this video reaches him!

[@Kniightisa]

Rare move bounties sounds like a blast

[@eagleandrewchess]

@@paralogical-dev at least it reached me, so, i'll try to do it :)

[@qqw743]

I was wondering just that: what is the rarest Rosen position, or any position at all, if one could analyze that?

[@JaretDawson]

I was thinking that, if this goes on the Rosen Score site we’ll have dozens of each before the week is over, then we’d have to find new rarer classes of moves!

[@gaetano_kojj]

I'm still amazed by the simple yet genius idea and the perfet execution of those cute little hand animations

[@Lypot]

I was not ready to how the cursor moves in this video, i absolutely love the animations on it

[@bigman-uj8xy]

I love how humble this is as if it isn’t one of the most epic data analyses in all of chess history

[@OddCanuck420]

Analyzing a dataset in the billions and going "i dont have enough data" is a humble flex

[@maxwellquipey1]

His voice made it sound as if it was something completely normal and you could do it as well with a piece of scotch-tape and a used condom

[@esobelisk3110]

@@maxwellquipey1 the requirement of a used condom would make it inaccessible to a lot of the people watching.

[@typha]

Now everyone will probably get on lichess and try to play games with doubly disambiguated bishop/knight capture checkmates, so I predict that in short order the bishop non-capture variety will become rarest :P

[@fili275]

😂😂😂

[@NathanOsman]

Came here to say this 😅

[@Swagpion]

Once people have a stupid goal, they will do it.

[@TWIlktitbliktvim-ty7td]

it's too hard they can't do it, plus nobody cares, and the few people who care aren't good enough to do anything

[@balala7567]

@@TWIlktitbliktvim-ty7td why do people act like a doomer in every single online space for no discernible reason

[@blazer9626]

Me: Today is gonna be the most productive day in my life Me 5 minutes later:

[@tranquilclaws8470]

Your first mistake was opening KZbin

[@beckettherbert6544]

me rn. went to the post office to get a passport and they said nah. now im here

[@mezoaro]

@@beckettherbert6544 rip bozo

[@Whatever-gx3un]

Part 2 kzbin.info/www/bejne/qZrNY4yVra2Eea8

[@TheMuddler]

I hate you :'(

[@user-sh3cf7kd6e]

14:48 Obviously someone who watched this video will intentionally do that very soon, if not already done.

[@gallium-gonzollium]

Hikaru has done both number 2 and 4 now.

[@dizzious]

There are people who have made one-in-all-history chess moves, who never even realized it.

[@ninetyninerising9482]

And we have thier li chess usernames

[@coryburris8211]

Maybe, but it certainly looked to me like the 1 instance of the bishop mate was completely planned out

[@Terraw]

Genuinely the most engaging chess video I’ve watched yet. I love it when people nerd about this stuff

[@Tourretic]

Fancy seeing you here

[@astronuat2124]

Wait until Terasteel over here finds the rarest weapon used to beat a boss

[@ChessNetwork]

This is one really professional chess video. Just fantastic! I give it the rare notation A++.😎

[@vharmi.]

He's ranking it A He's checking it twice When Jerry is here Our time will be nice

[@isavenewspapers8890]

Wouldn't the chess equivalent be, like, "!!!" or something?

[@bantaibaman5662]

Jerry! I agree with you, this one is absolutely a top-tier video. One of those rare classics, as a comment on this video mentioned.

[@Leenomacino]

I feel like this is gonna randomly be recommended to people like 5 years later. If that is the case, I want someone to reply to this comment at 16 of September 2029, exactly 5 years later

[@ShawnForno]

See ya then 👋🏻

[@greetingsfellowtraveller]

Hi possible future me 5 years later :)

[@LeshaunDinglenut500]

Hi future! Hope for the best!

[@cristhianfernandezmkt]

See You all in 5 Yearss 🎉🎉

[@ianmoore5502]

See you soon

[@lial4633]

I like that the right hand gets bandages after being struck by lightning. Nice attention to detail!

[@dragon_nammi]

WOW that's kind of hilarious actually. 10/10 subtle humor

[@kimikanna_live]

i thought it appeared after breaking the glass, but surprisingly, that was the left hand, and it never got hurt from it

[@YunxiaoChu]

Cool

[@barilelesikpee4081]

This reminds me of the longest death message in Minecraft.

[@green929392]

@@AmazingRofa loser

[@retrorampage4666]

lol

[@Frogking390]

Lol

[@GamerBros6423-x7u]

Your profile kinda looks like mine

[@GamerBros6423-x7u]

You’re profile is darker than mine

[@deviansee]

My man is back with a third video out of nowhere

[@alex.g7317]

Bro finally remembered his password

[@fili275]

😂

[@kossibwaya]

Lmao​@@alex.g7317

[@rontti5570]

So the next step would be: from which square would the double disambiguated bishop capture checkmate be the rarest to have happen

[@En2md]

Revealing the rarest move is like disecting a frog. You learn about how it works, but you kill it in the process.

[@thecaptain291]

i mean hopefully you kill the frog _beforehand_ but okay-

[@liu1806]

​@@thecaptain291 i mean. My first time disecting a frog. The frog is very much alive with two person holding the hand and leg from opposite side. Another person would then dissect it, and yes the frog is alive during the process. Until we cut the lung, the heart is still continue to beat for however long until it finally die. So uh, afterwards one bring them home to make some frog dish

[@thecaptain291]

@@liu1806 what the hell 💀

[@lvlinty]

​@@liu1806that's wildly unethical and should have been reported if this was in some institution.

[@liu1806]

@@lvlinty it in my hight school biology class. It been a long time so I don't remember if they changed the rule. Also our class only dissecting frog ONE time so I not sure which year exactly I did it

[@SZvenM]

Just a few seconds in and I already love it. Your visual style is just so engaging and fun. Really excited for this one. Edit after having seen the full thing: Yeah, my excitement was not misplaced. This video is awesome. All the little details in the animation are so fun! I especially loved the increasing timer at 5:05, as well as the bandaged hand after 10:55

[@premiumtyrepremiumtyre1188]

Wait dude this was one day ago? This feels like a video that has been on KZbin for years, a classic, that's why I was constantly getting it on my recommended huh?

[@JohnAlbertRigali]

Nerd-tier data collection and statistical analysis. An Euler diagram. Love it!

[@alex.g7317]

Now that you made this video I’m gonna use all the rarest chess moves multiple times to outdate this video.

[@e_sky3045]

KZbin was aggressively recommending this video to me. Eventually, I decided to watch it and I’m really glad I did.

[@itmightbe]

I love how KZbin just does that occasionally because the video always turns out to be a banger

[@Mulakulu]

Those hands are so cute and somehow express so much emotion. I love it

[@CobraShuttle]

This is exactly the type of video I want to watch on youtube. An in-depth question and answer to something I never even asked, but am instantly fascinated by once it is.

[@MultiSteveB]

[Right hand gets struck by lightning] [Left hand takes over] [10:54 Right hand comes back with bandage] Nice touch of detail! :D

[@invenblocker]

I'd agree on the "must exist to be the rarest" argument, and crown the double disambiguated non-capture bishop checkmate for the time being.

[@dominickmaddox9576]

100%, if it hasn't happened, it's not rare. You can't say, for example, mammoths are rare if there aren't any at all.

[@nathankurtz8045]

As noted at the end of the video, that wasn't the only unique move. "1,306 moves only occurred once". so, all of them tie for rarest that happened in the dataset.

[@invenblocker]

@@nathankurtz8045 Which is why saying "rare category" makes more sense than "rare move".

[@jiaan100]

​@@dominickmaddox9576 they're very rare. Unless you cook them

[@JannPoo]

I feel the same. It's as if one said that the rarest bird is the Green Raven, because 0 ravens of that color have been found. Is it possible for a green Raven to exist? I mean theoretically, why not? There are plenty of green birds so it's not impossible for a mutation to occur to a raven, and perhaps it did occur once in our planet's long history. But as long as we don't find evidence that a green raven exists or existed, that shouldn't be considered a "rare bird".

[@cantrusthestory]

Well... After this video was released it won't be the rarest move possible

[@otsugua77]

Genshin players look at 14:07 and drool with such good odds

[@diazkohen2149]

Winning 50/50 pity🤤

[@sonicwaveinfinitymiddwelle8555]

That didn't sound so hard until I realized I've lost 900 rating and I've been playing against 200 elo players for 15 hours straight just for a single checkmate💀💀

[@vlc-cosplayer]

"200 elo players" Then you probably played against me 💀 (JK I don't play chess, but if I did, that's the elo I'd expect to have lmao)

[@st4vvv]

​@@vlc-cosplayer Bro, why are you watching exoteric chess theory if you don't play the game ahahaha

[@Hapetiitti]

​@@st4vvvBecause it's interesting? Kinda the whole point of science is to easily disseminate information even to those outside the field.

[@Kyle-gn2ub]

@@Hapetiitti try a game dude, it's worth learning the game!

[@Hapetiitti]

@@Kyle-gn2ub Of chess? I've been playing since I was like 6 :D I've also tried teaching it to my kids, and I agree, it's a great game!

[@LDG519]

I want to see the full game with the double disambiguated bishop non-capture checkmate.

[@Andreatuzze]

I loved this minimalistic video style, centered the attention about the content and your content was AMAZING. I didn't even know such moves existed as a chess player

[@TheRatDefence]

I went to your channel thinking "This guy makes really good videos I want to watch more" and when I found I had watched all of your videos I was very sad. Please keep making more videos like this, doesn't have to be about chess or language specifically, just interesting nerd stuff.

[@TheShine_ii]

14:00 this man is a legend! 🔥

[@a_very_angry_pickle]

Game idea: have one chess move randomly picked and then try to actually get it in a game. Bonus points if you win.

[@will2998]

As opposed to getting the move, how about avoiding a move instead. Make a banning phase pre-game, like [O-O, e4, f4] is forbidden, forcing an unusual opening or mate threats

[@WatermelonDoge]

that sounds like a good idea however like the person in the video said an entire third of moves have never occured in a real game

[@flaviogattamorta2132]

What a high-quality video, I really appreciated the way in which you treated data and the friendly presentation. A very interesting and well made video!

[@WilhelmDerbus]

really nice little detail: around mionute 10 second 50 (+/- 5 seconds) one hand destroys a glass and a few seconds later the hand has got a band aid thing on it - i really love this detail - nice work

[@erich.5326]

The hand around 11:00 showing up with bandages after smashing the glass is just perfection level attention to detail

[@banNa527]

It wasn't because the hand punched the glass, that was the left hand The right hand got struck my lightning before that, hence it being bandaged

[@Iearnwithme]

Holy crap this one of the best art themes for a educational video I have seen in years

[@hindigente]

It is more common to think about chess moves in terms of their effects on a game (capture, [discovered] check, fork, promotion, stalemate, [forced] repetition, etc) than standard notation (which of course, does capture most effects, but not all). For example, most cases of double check(mate)s might not ascertainable by (standard) notation alone. Neither would "post-missed-castling/en-passant stalemates" (a board position repeats, but with one of the players no longer being able to castle / perform en passant, it becomes a stalemate). Regardless, this was a really interesting question and notation is probably the best place to start. Your video was enthralling from start to end, and I wouldn't even have these minor criticisms if it hadn't caught my attention as much as it did.

[@boxothefemboy]

i love this channel! there aren’t enough videos yet for a proper binge but you make wonderful videos!

[@ozAqVvhhNue]

3:36 You son of a gun, I wanted to do this myself!

[@ozAqVvhhNue]

And you didn't even tell how many unique algebraic chess notations there are?!?!?!?!

[@paralogical-dev]

I guess I'll keep that for the next video! :D

[@mitchellmarinac6893]

This is an outstanding video. Thank you for taking the time to do this!

[@lolz9449]

This video was basically what was going through Doctor Strange’s mind during Infinity War.

[@cobalt2672]

This was a fun video to follow along with, and made me feel very smart guessing the numbers on entries #2, #3, and #4. It was amusing that immediately after I thought "doesn't it have to happen at least once to be 'rare', really?" you went right into that point... Your video style is super cozy and satisfying, with all the little gestures and taps feeling really nice

[@viacheslavkaymin6245]

13:41 i literally screamed when you showed that game. Awesome video, loved it!

[@gallium-gonzollium]

Holy crap, why doesn’t this have more views? The smoothness in your animations is amazing!

[@5piral0ut]

It’s been up 22 hours… give it a chance!

[@RicardoMontania]

Im gonna do a couple of doubly disambiguated bishop capture checkmates tonight

[@edcartre]

You savage!

[@definitelydoctorproctor]

I love the aesthetic of the editing, a very unique style

[@thewumboman7683]

Very high quality video mate. I like your objective, numerical approach to things.

[@trwijbenga]

This is awesome, both the nerdy topic and the very structured way of trying to answer this question. I love this!

[@GmetrixTutorialEsp]

You don’t upload very often but when you do, the videos are really good.

[@Tzu_2224]

can we talk about rare moves mac? ive been dying to talk about rare moves with you all day!

[@Anduardus]

13:58 glad he didn't surrender.

[@kindlin]

I went frame by frame, and the game is semi-reasonable with just a bunch of blunders, and then black goes bishop promote (which does nothing), bishop promote (which does nothing, again), queen promote (still nothing is happening), moves bishop for discovered checkmate. It's almost like he set that up just to do a really weird and hard to replicate move for the purposes of this video,

[@cteixeirax]

​@@kindlin the thought process behind this video is far more likely to occur than the move itself (authentically)

[@Anduardus]

@@kindlin that could well be the case hikaru and other top players also like to do that if they have won already because it's a rare occurance to be able to do that, i don't know about the blunders tho

[@microwaved-popcorn03]

This is part of the next series of videos that will randomly pop up in people's recommended, and I find that really nice.

[@jasonorjoshlee7607]

That guy who did a doubly disambiguated bishop non-capture checkmate must feel like a god rn. The fact that is was even on the 22nd of 1st month of 2022...The amount of twos...and even his elo was 2020😮 imagine this happened on February😅

[@subiugetur]

What a deeply intriguing and well produced video

[@mebbish3574]

15:14 it says "doubly disambiguated knight capture checkmate" and not "doubly disambiguated bishop capture checkmate".

[@GivingOthersAMentalBreakdown]

I was gonna comment that 🗣️❎☠️😭

[@MateuszNagorski]

@@GivingOthersAMentalBreakdown me 2!

[@chilaou]

hah, same. thank you for doing so~

[@Kniightisa]

Tacking on "rare move" scenarios feels like crazy joker multipliers in belatro lol

[@lazydictionary]

Your videos are always superb. Wish you posted more!

[@paralogical-dev]

I definitely didn't mean for this to take 6 months since my last video 😅

[@phoenixflames6019]

that bandaged hand tho... I LOVE THE EDITING SO MUCH 10:25 the right hand gets struck by lightning :)

[@Rainy_Lynel]

I'd definitely welcome more videos on chess statistics. The results of this really surprised me, like that fact that around a third of possible moves haven't been played on lichess.

[@有賀_竜樹]

Thank you! That's the first time I've learned Standard Algebraic Notation appropriately since I started to play chess (nearly 2 years ago).

[@xinfinity4756]

10:44 the punch of the glass which seems to be the reasoning for the bandaging occurs with the left hand, but the right hand is bandaged

[@imthatorphan4018]

It's from the lightning at 10:25

[@xinfinity4756]

@@imthatorphan4018 oh, that makes more sense

[@NuMIoH]

Nice video, and your voice is very calming!

[@VuNam_MCVN]

16:24 we're doomed

[@DaverseSeinPrivater]

Since i saw nobody else point it out, i will say that your animation style is absolutely beautiful and unique

[@xronium]

i rediscover your channel and you upload again omg

[@jojoshfgc]

i looooove the detail of the bandages on the right hand cursor after it was struck by lightning

[@betabrett0223]

so only roughly 30824152725330 (≈ 308 trillion) Bishop moves need to happen for one instance of a double disambiguated bischop capture checkmate

[@timothymclean]

*moves

[@betabrett0223]

@@timothymclean u right, thank you

[@jucom756]

I haven't seen the entire video but from the intro going off of notation intoduces heavy bias. I suspect one of the special disambiguation cases will be the rarest, just because you group together a lot of board state changes with notation, and through disambiguation there are way less board states for for example Nd3e5 than something like xe6 (which could be en passant), while this notation does coincide quite well with unusual moves being rare (double disambiguation nessecitates pawn promotion) some rare moves are still grouped together with really common moves by virtue of not being ambiguous. It makes sense that you use algebraic notation since that is easy data-wise, however it is worth acknowledging that some incredibly weird board states will be obscured here by being grouped together with pretty plain board states.

[@KillianTwew]

I'm mostly impressed they let you download 9tb worth of data off their servers lol

[@TheRussell747]

It's not hard to hide the fact that a single person was doing the downloading. If they start to bottleneck your rate, you just add a proxy to your download and they suddenly think you're a new person. The easiest way to do the download would've been multiple devices simultaneously downloading it while also hiding the fact that they all reside at the same end destination, and it wouldn't be very difficult to do.

[@nouche]

Yeah the video about enumerating every possible move would be cool!

[@drade3665]

10:05 You wouldnt have to disambiguat between the numbers as the upper knight capturing wouldnt result in checkmate Great video btw

[@BoJack230]

0:37 "which we already know is rhubarb" mate i didnt even know rhubarb can even go on pizza

[@KwaziXD]

paralogical: this never happened hikaru and coissant:

[@bennybundi9671]

They did just not on lichess, so the data there may still have 0’s

[@CoverBydAn]

I came for the end result, stayed for the thought process Well done. Amazing explainer

[@foryoutoenvy1]

9:13 there actually isn’t a need for the double disambiguation as ONLY the 6th rank bishop moving could cause checkmate (in the shown scenario, such is possible by arranging one more rook on the right of the other bishop on the 6th rank)

[@davidmcdonald8893]

The same is true of the knight move - the knight on the 8th rank can't give mate so there is no need for rank disambiguation. HOWEVER, I think that formally the decision to require disambiguation of rank and/or file only applies to the pieces that COULD move to a square, and you disambiguate any time it might not be obvious which piece is moving. Then check or mate is added after that. That is, sometimes the rules of notation require the use of disambiguation even when it isn't really needed.

[@Saiscania]

10:53 I'm not sure I understand the numbers, but I'm glad that hand got a bandage!

[@qcom1008]

isn't the rarest pawn move also disambigated by rank (two pawns on the same file! ) 16:54

[@sadisticmystic]

If you have a pawn on a2 and a pawn on a3 at the same time, only one of them can move to a4, so there's no disambiguation in that. The pawn on a2 can't move unless there's an available capture on b3, and the thing about the "axb3" move is the notation doesn't change even if you have a pawn on c2 that can also take on b3.

[@qcom1008]

@@sadisticmystic except in the situation where an a4 and a5 pawn can both take the same pawn, one through en passant, and the other normally! Then, the pawn move would have to be disambiguated by both rank and file if there was say a c4 pawn that could also take the pawn for example. THAT would be a TRULY rare pawn move!

[@CM-oe9ky]

​@@qcom1008I don't think this would work either, even though they'd take the same pawn they'd end up in different positions which removed the need to disambiguate

[@RuijsNL]

Really enjoy the way you animated and edited this video. Not a huge chess buff this was fun to watch

[@danielsantoro6332]

The weird part about this is that if anyone does either of the moves that happened, 0% of the time, they'll retroactively prevent themselves from completing the rarest move by making it less rare.

[@davidnagy8535]

*promotes pawn to pawn

[@colintroy7739]

3:44 absolutely want to see this!

[@Goffeth312]

Such a great video, the editing, pacing etc is top notch!