シャドーイング練習: GPT-6 Astra Solved Chess. Unbelievable. - 動画で英語スピーキングを学ぶ

Ladies and gentlemen, for many years now,

it has been our assumption that ChatGPT cannot play chess.

Started maybe three, four years ago, I made my very first video,

that my second video, you might remember ChatGPT versus Stockfish, it was a disaster.

Since then, I've put on multiple chatbot chess championships.

It's always a disaster.

But recently, GPT -6 Astra came out.

This is something that is meaningful to people who follow this on a day -to -day basis, but I was just interested in one thing.

Can it play chess?

and fortunately or unfortunately the answer is yes

and today i will be showing you my game against gpt6

astra it's really good it's really really good i that's all i have

that that's the introduction uh sit back relax enjoy yourselves i i'm only covering one game

because it actually took like an hour and a half to play this game

and i had to reboot it and it was it was thinking really long and

so i'm gonna make this video maybe then i'll pair it

against i mean i would love to see it against fable

but fable doesn't play chess it doesn't respond that well to chess anyway

so astra played e4 now again

if you haven't followed this saga you're a new fan of

this channel go back through my old chatbot championship videos

or the gpt videos like early on these bots played like

garbage they brought their queen out whatever in this game i

played the french defense there are many openings after e4 i

didn't really want to play symmetrical my idea was to take the computer out of known theory like

that it always programmed with an opening book

and i figured it might memorize some stuff it took the full center with d4

which is very good now black needs to fight back in

the center with the move d5 i don't know why that has a book symbol.

That's annoying, but whatever.

Knight to c3, and I played bishop before.

So this is the winnoir.

First of all, in the French defense, white can advance.

White can play some other moves, like this is known as the taraj variation.

And here, black has two choices.

One of them is the move knight of six, which is known as the classical French.

And then white goes here, black goes here.

White makes a big center.

You strike back.

You have a big battle here against white's center pawn.

The other variation, which is incredibly sharp, is bishop to b4, which pins the knight to the king, attacks this pawn, and then also weakens this pawn on g7, which white can attack.

Winnower.

W -I -N -A -W -E -R.

Now you can impress your next date.

Winnower French.

Now, Astro responded with the best move, removing the pawn from danger, taking away space from my pieces.

I responded with the move that I know.

uh and it played the best move again played the best move

which is to force me to make a decision here with

my bishop a3 uh mostly people are taking this knight bishop

a5 is known as the armenian variation retreat variation i think it's known as the armenian variation

but you don't take it's also playable but uh i took took

and now black has several choices you can play queen c7

queen a5 knight knight e7 knight c6 uh i simply develop

my knight to e7 in the future i might go to f5 putting more pressure white can take this pawn

but that would leave them with tripled isolated c pawns tripling your pawns is bad also

when they have no neighbors it's bad weakening your center is bad it's not gonna happen to my surprise uh

and my dismay astro went here which is the best move

so at this point i'm thinking okay it's pulling resources from

some sort of opening book right like there's still an opening

book out there on the internet it's not actually thinking on its own.

Maybe it's never thinking on its own.

I have no idea.

And now the best move is just, again, queen c7.

And there's a very long line here called the poison pawn variation, where white takes this, white takes again.

You play pawn takes d4, attacking this pawn.

White goes knight e2.

You take on c3.

It's an incredibly, incredibly rich and complicated position.

But again, I'm like, this thing is going to suck at some point.

And the whole point of making chat gpt content is like

the illegal moves the illegal moves later on the bishop

that teleports in from another dimension into the board

and i went queen a5 queen a5 is not the best move it's a move

but i played bishop d2

so it still has good vision of the board it's defending

itself now i can defend my pawn either by moving it

by castling uh rook j8 is kind of ugly knight f5 is also playable.

But I was like, let's have a little bit of fun.

I mean, at some point it's going to do something dumb, right?

Let's have a little bit of fun.

I'm going to give it all of these pawns and I'm just going to go knight c6.

Now, Stockfish hates this.

but I got to give some odds to the LLM, right?

Well, Astra took my pawn.

It played the best move.

Played the best move.

I went here, saving my rook, and it took my second pawn.

So now white has a two -pawn advantage.

Now that normally would be substantial.

It would be actually nearly decisive.

The problem for white in this position is that it's not actually easy to do anything with that two -pawn advantage, because in chess, you have to bring out all your pieces.

You can't just have a two -pawn advantage and win.

So it's going to be a long, long time before this pawn promotes.

In that time, I will castle my king this way.

I will start attacking the structure.

All of my pieces will come alive.

And actually, losing pawns and chests is bad.

But in some ways, it does kind of open up lines for my pieces.

100

So it's not so easy for the opponent to move toward me.

101

So bishop d7 is the move that I played.

102

And I was going to play long castle.

103

Why just develop the knight?

104

I'm still kind of shocked at the quality of these moves, I have to say.

105

uh and now uh i went here and you might look at this

106

and go wait a minute can't it take a third pawn it can but

107

if it does this again you open up lines for my

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pieces i play rook f8 now you have to go out somewhere like queen h5

109

and this is very difficult honestly the pressure of these two rooks cannot be understated shout out solomon

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and deadlock by the way i'm going to be playing

111

that game a little bit later uh with an individual known as deathy

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if you've been following there's this new game it's not really new

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but it's like kind of new in the mainstream

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and there's a character named solomon

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which is my grandfather's name by the way incredible chess playing character uh

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and he has a double rook attack it's just and there's much more lore than that anyway uh

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astra plays the best move again top move of the computer

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only move to get the advantage queen to d3 at this

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point i'm thinking i'm gonna lose like it's not making a mistake

120

and the idea of this is actually to trade my queen i think i mean i'm not sure uh

121

but i spent a little bit of time here i kind of wanted to lock the position

122

but i had this idea that i was gonna go queen a4

123

and then c4 and then take this pawn

124

because the queen would stop guarding it i thought maybe i could pull

125

that off because i don't know at which point it's gonna actually stop seeing the position so i played this move a6.

126

Maybe a little bit too passive of a move.

127

Snodfish here is ready to absolutely take my soul.

128

It wants to go h4.

129

That move, first of all, gets the pawn closer to promotion, but also controls g5.

130

It wants to plant a knight there and then block my vision of the position.

131

Wants to start capitalizing on its two -pawn advantage.

132

Here, bishop e2 was the move played.

133

And I gotta tell you, I didn't know if this was the first mistake or if this was a trap.

134

Because again, the move bishop e2 stops guarding this pawn now

135

if i take this pawn it looks like oh white can't castle

136

and white's not going to castle this way but

137

if i take the pawn knight g5 comes in right defended this is under attack

138

and if i defend that i can say goodbye to this rook

139

so my rook is actually trapped so i'm sitting looking at the position like the gpt6 just set a trap

140

now i didn't want to risk it

141

so i followed my plan queen a4 not the best move

142

at this very moment it was better to actually play c4 first

143

but i played queen a4

144

and finally finally astro made a mistake finally it took a long long time uh

145

and uh the mistake is that here instead of castling it should play bishop to g5.

146

This move does a couple of things.

147

It puts pressure on my position, it blocks my rook, but also now this move is well met with a retreat of the queen.

148

Previously the bishop was blocking the queen's path, and that might be a little bit too subtle.

149

Now I'm never generating any counterplay.

150

I'm down two pawns.

151

I'm actually completely lost.

152

I'm lost because I don't have any counterplay.

153

None.

154

I can play rook e8.

155

It will just play h4.

156

I'll get my knight out it's just going to go g4 or g3.

157

White has a rock solid position and two extra pawns.

158

All my pawns are frozen.

159

I cannot push any of my pawns at all.

160

Yeah, I'm just lost, which is kind of sick.

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Lucky for me, Astra made a mistake.

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I went here, and it lost the pawn on c2.

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Now, actually, white is still much better.

164

Black is up a pawn, but white has the bishop pair,

165

and white has a much faster direct attack against the black king i think white will generate an attack much quicker

166

um but you have to be precise here

167

so here you know you got to play like bishop d1

168

which is a weird move and then when i go here

169

and threaten may you got to go g3

170

and then this bishop kind of goes somewhere else

171

and then it's not so simple i have to say this position uh astra plays something

172

which looks a lot more human it moves uh the rook to attack my queen

173

and now i retreat my queen to g6

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uh and still it's plus three i am completely lost

175

which has never happened against any of the previous gpts uh

176

so definitely this one is quite a bit stronger uh g3

177

finally an inaccuracy although it's kind of difficult to even understand

178

why well apparently you needed to go knight h4 instead of

179

being passive you needed to be massive uh you counter attack

180

and defend at the same time my queen has to go

181

somewhere i'm trying to avoid a trade of queens i'm trying to play like queen g7 or queen h7.

182

And what white does next is force a trade of queens.

183

When you have a material advantage, you want to trade pieces frequently.

184

But also if your opponent's only hope is to counterattack your king, it's probably a good decision to trade off their most powerful piece.

185

If I try to avoid the queen trade, my queen will likely be chased down.

186

And yeah, sure, like I can keep kind of zigzagging out of there.

187

But at some moment, what will happen is white will just start attacking me like my queen avoided a trade

188

but in the process i lost complete control of my position

189

but astra played a reasonable move too instead of playing this

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knight h4 business it went g3 it's not made i really

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thought the game was gonna end here i thought the video was gonna be me getting to this position

192

and then you know checkmating it it went g3 now i

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decided i gotta get my knight out right i'm attacking the queen

194

but also i'm improving my knight and here i made a mistake.

195

Here, instead of what I did in the game, Stockfish, which is watching two morons play chess, wants to bring the rooks over, etc. It even considers f6,

196

which I would never consider because that opens up the lines to my king.

197

But I thought, look, weak square, let me go knight a5.

198

Like, what could possibly be wrong with knight a5?

199

Well, apparently knight a5 just sucks.

200

Apparently knight a5 is just an idiotic move.

201

This knight should be back here.

202

It does not want to wander over this way.

203

If white gets out of there with rook e1 and then rook a2, my knight actually is just ass.

204

Like if I take the bishop, that's not a particularly good move because that bishop wasn't doing anything anyway.

205

But I went knight a5.

206

You know, I thought I was playing normal.

207

Astra responded bishop d1.

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Oh, and by the way, if you're still here, shout out to you for having an attention span of 12 minutes.

209

At the end, I will reveal the guess the elo of Astra.

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So I you know, I asked it to estimate our ratings based on this game, and it gave a breakdown of the game.

211

Now the game gets really interesting.

212

Bishop d1 countering the move knight b3 by giving away the bishop is a gross positional mistake.

213

Why?

214

How do you make that decision?

215

How do you avoid something like this?

216

Well, it's the concept of the good bishop and the bad bishop

217

so how do you know which one is which generally the good bishop stands on the opposite color complex

218

of your dominant percentage of pawns in other words white has

219

one two three four five six seven pawns on dark squares

220

every single pawn they have is a dark square pawn

221

That means your bad bishop is the same color as the pawns, usually.

222

If this bishop was on this square or on this square, maybe not.

223

But generally speaking, this is your more important bishop.

224

You don't want to trade that bishop.

225

Because if you trade your light -squared bishop, all your light squares get weaker.

226

And guess who has a light -squared bishop?

227

Me.

228

Right now, my only bishop is kind of a bad bishop.

229

First of all, in the French defense, the light -squared bishop is a bad bishop.

230

that's kind of well known but in general

231

if my bishop lost the center pawn

232

and got to come alive on this diagonal

233

that would be a massive problem more on that later

234

because this is this is kind of ominous I'm just letting

235

you know this is a bit of foreshadowing here ongoing

236

so the opponent went bishop d1

237

and right away I was understanding okay it's not a perfect player it's making some mistakes

238

so I play knight to b3 takes takes and I'm even ready to part ways with this pawn But, okay, it went rook b1.

239

It wants to attack my pawn.

240

Stockfish doesn't like my next move at all.

241

It, you know, I thought it was very normal.

242

My pawn is hanging.

243

I protect my pawn, right?

244

Protect, attack, eat snack.

245

It hates that move.

246

Instead, Stockfish is like, this doesn't matter.

247

Now you need to go queen h5 and just start walloping the opponent on the light squares.

248

Which is kind of, it kind of makes sense.

249

If my bishop could teleport over there, instead it's going to have to zigzag its way, right?

250

That's a little bit better.

251

I played bishop a4.

252

Now it wants computer to go h4.

253

It wants to go h4.

254

It wants to put the knight back on g5 or maybe make a queen trade.

255

h4 is a very difficult move.

256

I did not, you know, if it started playing h4, what I thought was much more reasonable, given that there's a rook here and a king here and a pawn here, is to play the move c4.

257

This move looks very logical.

258

Why does it look logical?

259

Well, I have a king on the other side of the board, right?

260

That also opens up the bishop.

261

If pawn takes, rook takes is a fork, that's probably bad.

262

So I thought c4 was a very good move.

263

For the record, I think Astra's playing a fantastic game.

264

Here's the only problem.

265

c4 better work.

266

It's an explosive move opening up the position.

267

But here's the thing.

268

If I take this and survive, or if you take me and I survive, guess what's going to open?

269

The light square diagonal to your king.

270

It's a very double -edged sword.

271

Now, I played the move here, which is not a good move.

272

Well, it's okay.

273

but apparently I can take, because after this, even if I go king b8 and lose my bishop, my queen would then attack the rook over here,

274

and I can go knight takes g3.

275

That's kind of disgusting.

276

I didn't see that at all.

277

Instead of against c4, I just went king b8, and now there's a very important moment here, and I think practically speaking,

278

you have to play this move you have to understand what

279

you are pushing for you have to go c5 c5 looks

280

counterintuitive it looks like you're still blocking your own rook you're blocking your own bishop

281

but you're not letting me ever open up my position

282

and later you will go c6 maybe even sacrifice right get a bishop in right

283

and you prevent the opening of the position a much worse move in this position is bishop b4.

284

Finally, black has an advantage.

285

I have an opportunity to get totally back into the game because of the move bishop b4.

286

It looks like you are going to improve the position of the bishop, but that was the wrong moment to play that move.

287

Instead, you needed to go c5.

288

And now I don't have an easy move.

289

If I go bishop b5, of course, you're just taking the pawn on b3.

290

If I go queen h5, trying to go rook g4, you can even go c6.

291

It's pretty sick.

292

If bishop takes, you take on b3

293

if pawn takes now you go bishop before

294

and this is a totally different story as your bishop is getting in with some serious power

295

but on this moment i can take take and now i'm actually winning

296

because the rook is hanging what's funny is i played my

297

next move too quickly i just autopiloted my next move uh

298

because again i had opened the middle of the board and and i'm also, when I play these games, I frequently don't set the board up.

299

Like, I don't have the position in front of me.

300

I try to do it blindfolded.

301

I just try to do it in my head.

302

But, you know, once the illegal moves start, that's when I start putting up the position.

303

Yeah, I can play blindfolded chess, but I've also played chess 25 years.

304

So I was like, okay, I'm just going to very quickly play bishop c6.

305

Bishop c6 is a huge mistake.

306

Huge mistake.

307

Even though it doesn't feel like it.

308

Yeah, knight takes g3 here is completely winning for me, but I didn't spot that.

309

I played Bc6 with the idea to go here and continue kind of this attack.

310

Why is this bad for me?

311

I thought Bc6 was a very reasonable move.

312

Why?

313

Well, Rb3 is a mistake, obviously.

314

I skewer the rooks.

315

That's what happened in the game.

316

I was like, oh, GPT is finally messing up.

317

I have a completely winning position.

318

Nope.

319

White is better.

320

How is that possible?

321

White is better because of rook c3.

322

And if I take, white is plus one.

323

How, like, how can I possibly evaluate this?

324

I think it's because ultimately white has so many extra pawns.

325

White has two pawns and a bishop for a rook.

326

And I mean, even if we go here, like, white is always safe.

327

White is surviving.

328

White has these pawns in the long run in the endgame.

329

And the promotion square is the same color as the bishop, so it will be difficult to defend.

330

I don't know.

331

But I thought I was just winning here.

332

Like, I thought, practically speaking, I have a completely crushing position, and the game is probably over in a couple of moves.

333

Now, one more thing I would like to point out.

334

As you get stronger at chess, you have to be able to activate your inner Doctor Strange.

335

Where Doctor Strange sees, like, 14 million possibilities ahead, you don't have to see 14 million possibilities ahead.

336

It would be a miracle if you even saw four possibilities ahead.

337

What I'm suggesting to you is, there is a light -squared bishop here, there is a king here, There are open lines over here.

338

Hey, wouldn't it be great if a rook or a queen landed on those two squares somehow, and we got a checkmate?

339

This is the way you predict and plan an attack in chess.

340

And by the way, you have to do the same thing against yourself.

341

Now, in this game, I thought I was very safe.

342

I thought the only pawn in front of my king is protected.

343

I thought there's no easy way for the knight or the queen to get involved, so I honestly thought I was doing very well.

344

My opponent went rook c3.

345

and of course I can take the rook but there is something

346

and I've wrote about this in my second book it's called

347

relative value the value of a piece as a game is

348

progressing normally a bishop is three a rook is five

349

but right now this is not a three -point bishop at minimum four

350

and this is not a five -point rook I would say four

351

and a half maybe four they're worth about the same And as it pertains to this king, yeah, the bishop is problematic for sure.

352

So queen h5, rook g4 is a huge threat.

353

And I suddenly realized, oh, I am much closer to winning this game than I thought.

354

Now Astra realized I didn't take the rook. So it retreated.

355

But as you see, now black is winning.

356

Black is winning because of a very vicious counterattack here.

357

Even though white is up two pawns.

358

I put my rook on g4 and the queen goes back.

359

And it looks like right now I can't actually break through the position.

360

I can.

361

I can take the knight.

362

Rook takes f3.

363

And then I can play something taking on d4.

364

But actually the most vicious move here is rook h8.

365

And there's just no way to protect the attack.

366

You have to go h4.

367

That doesn't help.

368

I take.

369

You're pinned.

370

My attack has arrived first.

371

And it's arriving on the light squares but there's something even cooler

372

and it has to do with my light squared bishop and

373

that corner square

374

and this will be added to your toolbox of chess skills

375

over time i realized here i can take the pawn on d4

376

because if i take the pawn on d4 my rook will deliver checkmate on h1

377

what what am i talking about i'm gonna sacrifice my queen i can't do it now

378

because the knight is protecting but i can play knight takes d4

379

and the queen can't take because it would be lost the knight probably has to take

380

if the knight doesn't take i will take the knight

381

and win And the only other thing you have to calculate when you look at a move like knight takes d4 is, what if neither of these moves happen?

382

Does my opponent have a check?

383

Do they have a capture?

384

Do they have a counter?

385

They do.

386

After knight takes d4, my opponent can play bishop d6.

387

Unfortunately, I just move my king, and that's the end of the attack.

388

I don't even have to sacrifice anything.

389

There's no counter.

390

There's no nothing.

391

There's no way to get the queen over here.

392

Nothing.

393

So I went knight takes d4, and I don't think Astra saw this coming because it took

394

and then kaboom queen takes h2

395

and of course you have to calculate not just this you

396

have to also calculate king f1 sometimes just a quiet move ends the game

397

but in this case everything is losing for white first of all i can take this

398

because if the queen takes my rook takes the queen by virtue of bishop to g2 check

399

but second of all i can also play queen h1 king e2

400

and at a minimum I can take this rook at an

401

absolute minimum at a maximum I go here first the king either moves

402

or the rook blocks and then I take

403

and at no point is white fast enough with any sort of counterplay against me

404

and so what actually happened is it took

405

and then I managed to checkmate on h1

406

but like I said this game took an hour

407

and a half it thought for two three minutes at certain

408

moments I don't know what it thought about I don't know what Astra was thinking about

409

but it was playing very good moves and for a

410

while it completely punished my opening mistakes i took way too

411

many risks in this game i also played an opening i'm not that familiar with

412

uh and uh yeah i mean it was it was the biggest advantage it had was plus three and a half

413

and right around here had it gone bishop g5 i would have just like been completely lost

414

which is which is kind of nuts

415

if bishop g5 had landed this would have been a much longer battle

416

and there is a very high chance i would have lost the game uh

417

because it would have completely shut down my ability to create counterplay

418

so i learned my lesson i'm not going to take as

419

many risks next time maybe i'll run back a couple of games

420

and try to play openings i'm a bit more familiar with

421

and i told you in the beginning of the video

422

that i would uh i would tell you the estimated rating

423

um yeah it it said this you black 1400 to 1700

424

chess .com rapid created threats with knight b3 found bishop a4

425

to defend the pass pawn it gave me credit for defending a pawn.

426

Amazing.

427

White is 1 ,000 to 1 ,300.

428

No chance.

429

Absolutely no chance.

430

Allowed the skewer, then played king h2, walking into force mate.

431

So it's good to know that, you know, the guess the elo component of Astra is still complete gibberish, but yeah, it thinks that I'm 1 ,400,

432

1 ,500, and it thinks that it played at 1 ,000.

433

Very humble.

434

That is all I have for you today.

435

Let me know if you have any feedback or suggestions for future episodes with Astra, but it knows how to play chest now and it's pretty good.

436

Get out of here.

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このレッスンの語彙とスピーキングのポイント

このスピーキングレッスンは、動画「GPT-6 Astra Solved Chess. Unbelievable」を教材にしています。繰り返し出てくる語は次のとおりです：bishop, pawn, knight, queen, rook。この動画には、シャドーイング用の文が436文、単語が4677語あります。音声の長さは25:02です。話す速さは速く、1分あたり約187語です。音のつながりや弱く発音される音が多くなります。英語の頻出3,000語に含まれる単語は78%だけなので、語彙は難しめです。

この動画の重要語彙

動画に出てくる覚えておきたい単語15語を、発音と意味つきで紹介します。

単語	発音	意味
bishop 名詞	/ˈbɪʃəp/	主教, 司教
pawn 名詞	/ˈpɔːn/	ポーン
knight 名詞	/ˈnaɪ̯t/	騎士, ナイト
chess 名詞	/t͡ʃɛs/	チェス, 西洋将棋
defend 動詞	/dɪˈfɪnd/	守る, 防ぐ
castle 名詞	/ˈkɑːsəl/	城, 城郭
opponent 名詞	/əˈpəʊ.nənt/	相手
variation 名詞	/ˌvɛəɹiˈeɪʃn̩/	変動, 変化
retreat 名詞	/ɹɪˈtɹiːt/	後退, 退却
trap 名詞	/tɹæp/	罠
sacrifice 名詞	/ˈsæk.ɹɪ.faɪs/	犠牲, 生贄
calculate 動詞	/ˈkælkjʊleɪt/	計算する
suck 動詞	/sʌk/	吸う, しゃぶる
promotion 名詞	/pɹəˈmoʊʃn̩/	昇進, 進級
disaster 名詞	/dɪˈzɑːs.təː/	災害, 天災

動画に出てくる句動詞

単語	発音	意味
go back 動詞		戻る, 帰る
come out 動詞	/ˌkʌm ˈaʊt/	出る
go out 動詞		出る
point out 動詞		指す, 指し示す
shut down 動詞		シャットダウン

繰り返し練習したい文

動画に出てくる短く完結した文です。日常会話でそのまま使えます。

How do you make that decision?
How do you avoid something like this?
Why is this bad for me?
How, like, how can I possibly evaluate this?
Does my opponent have a check?

この動画の文法

話し手がよく使っている文型を、動画の実際の表現とともに紹介します。

文型	動画での表現
条件文 if + 節, will/would + 動詞 — 条件とその結果	if the knight doesn't take i will take · if bishop g5 had landed this would have
受動態 be + 過去分詞 — 誰がするかより、何が起きるかに焦点を当てる	is known · cannot be understated · is actually trapped
関係詞節 who / which + 節 — 人や物について情報を加える	people who follow · six, which is · variation, which is
現在完了形 have/has + 過去分詞 — 過去の出来事が今も関係している	has been · I've put · haven't followed

注意したい発音

話し手はI'm, don't, gonnaなど、短縮形や弱形を93回使っています。聞こえたとおりの短い形で発音しましょう。

「sh」と「zh」の音: bishop /ˈbɪʃəp/, variation /ˌvɛəɹiˈeɪʃn̩/, promotion /pɹəˈmoʊʃn̩/, shout /ʃaʊt/, vicious /ˈvɪʃəs/
長い単語（アクセントの位置に注意）: incredibly /ɪŋˈkɹɛdɪbli/, practically /ˈpɹæk.tɪ.k(ə.)li/, complicated /ˈkɑm.plɪˌkeɪ.tɪd/, fortunately /ˈfɔɹ.t͡ʃə.nɪt.li/, problematic /ˌpɹɑ.bləˈmæt.ɪk/

日本語話者が苦手な音：

/r/ と /l/ の区別 — /l/ は舌先を歯茎につけ、/r/ はどこにもつけない: incredibly /ɪŋˈkɹɛdɪbli/, triple /ˈtɹɪp.əl/, practically /ˈpɹæk.tɪ.k(ə.)li/, relative /ˈɹɛl.ə.tɪv/, reveal /ɹɪˈviːl/
/v/ — /b/ にならないように、上の歯を下唇に当てる: variation /ˌvɛəɹiˈeɪʃn̩/, passive /ˈpæs.ɪv/, vicious /ˈvɪʃəs/, relative /ˈɹɛl.ə.tɪv/, reveal /ɹɪˈviːl/
/f/ — 「フ」ではなく、上の歯と下唇で出す: defend /dɪˈfɪnd/, sacrifice /ˈsæk.ɹɪ.faɪs/, feedback /ˈfiːdˌbæk/, meaningful /ˈmiː.nɪŋ.fl̩/, freeze /ˈfɹiːz/

この動画での練習方法

まず声を出さずに動画を最後まで聞き、知らない単語をメモします。
まず0.75倍速で一文ずつシャドーイングし、慣れてきたら通常の速度に戻します。
自分の声を録音して元の音声と比べます。bishop, pawn, knightなどの単語に特に注意しましょう。

シャドーイングとは？英語上達に効果的な理由

シャドーイング（Shadowing）は、もともとプロの通訳者養成プログラムで開発された言語学習法で、多言語習得者として知られるDr. Alexander Arguelles によって広く普及されました。方法はシンプルですが非常に効果的：ネイティブスピーカーの英語を聞きながら、1〜2秒の遅延で声に出してすぐに繰り返す——まるで「影（shadow）」のように話者を追いかけます。文法ドリルや受動的なリスニングと異なり、シャドーイングは脳と口の筋肉が同時にリアルタイムで英語を処理・再現することを強制します。研究により、発音精度、抑揚、リズム、連音、リスニング力、そして会話の流暢さが大幅に向上することが確認されています。IELTSスピーキング対策や自然な英語コミュニケーションを目指す方に特におすすめです。

シャドーイングのやり方: ステップ別の完全ガイドを読む →

シャドーイング練習: GPT-6 Astra Solved Chess. Unbelievable. - 動画で英語スピーキングを学ぶ

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このレッスンの語彙とスピーキングのポイント

この動画の重要語彙

動画に出てくる句動詞

繰り返し練習したい文

この動画の文法

注意したい発音

この動画での練習方法

シャドーイングとは？英語上達に効果的な理由