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Brain Teasers

Challenge your mind with puzzles that require creative thinking

Explore our collection of brain teasers designed to stretch your thinking, challenge assumptions, and reward creative problem-solving. From classic puzzles to modern twists.

209
Total Puzzles
Free
To Play
Fun

What You'll Find

All Brain Teasers (209)

Brain teasers

Mini Sudoku

A 4×4 grid needing every digit once per row and column.

Medium
Brain teasers

Kakurasu Grid

Light cells to hit every row and column sum.

Medium
Brain teasers

Symbol Pattern

Shapes swap positions to keep balance.

Medium
Brain teasers

Hourglass Pulse

Sand keeps time better than a watch when thought through.

Medium
Brain teasers

Lighthouse Signal

Light tells stories to sailors if you count the pauses.

Medium
Brain teasers

Train Signal

Speeds and distances answer the question without a single number.

Medium
Brain teasers

Color Sequence

Spot the rule guiding every new shade.

Medium
Brain teasers

Letter Lock

Letters hide the code to the next vault.

Medium
Brain teasers

River Crossing

Missionaries must keep pace with the cannibals.

Hard
Brain teasers

Teaser Track 017

Sequence study #017

Medium
Brain teasers

Teaser Track 020

Sequence study #020

Medium
Brain teasers

Teaser Track 023

Sequence study #023

Medium
Brain teasers

Teaser Track 026

Sequence study #026

Medium
Brain teasers

Teaser Track 029

Sequence study #029

Medium
Brain teasers

Teaser Track 032

Sequence study #032

Medium
Brain teasers

Teaser Track 035

Sequence study #035

Medium
Brain teasers

Teaser Track 038

Sequence study #038

Medium
Brain teasers

Teaser Track 041

Sequence study #041

Medium
Brain teasers

Teaser Track 044

Sequence study #044

Medium
Brain teasers

Teaser Track 047

Sequence study #047

Medium
Brain teasers

Teaser Track 050

Sequence study #050

Medium
Brain teasers

Teaser Track 053

Sequence study #053

Medium
Brain teasers

Teaser Track 056

Sequence study #056

Medium
Brain teasers

Teaser Track 059

Sequence study #059

Medium
Brain teasers

Teaser Track 062

Sequence study #062

Medium
Brain teasers

Teaser Track 065

Sequence study #065

Medium
Brain teasers

Teaser Track 068

Sequence study #068

Medium
Brain teasers

Teaser Track 071

Sequence study #071

Medium
Brain teasers

Teaser Track 074

Sequence study #074

Medium
Brain teasers

Teaser Track 077

Sequence study #077

Medium
Brain teasers

Teaser Track 080

Sequence study #080

Medium
Brain teasers

Teaser Track 083

Sequence study #083

Medium
Brain teasers

Teaser Track 086

Sequence study #086

Medium
Brain teasers

Teaser Track 089

Sequence study #089

Medium
Brain teasers

Teaser Track 092

Sequence study #092

Medium
Brain teasers

Teaser Track 095

Sequence study #095

Medium
Brain teasers

Teaser Track 098

Sequence study #098

Medium
Brain teasers

Teaser Track 101

Sequence study #101

Medium
Brain teasers

Teaser Track 104

Sequence study #104

Medium
Brain teasers

Teaser Track 107

Sequence study #107

Medium
Brain teasers

Teaser Track 110

Sequence study #110

Medium
Brain teasers

Teaser Track 113

Sequence study #113

Medium
Brain teasers

Teaser Track 116

Sequence study #116

Medium
Brain teasers

Teaser Track 119

Sequence study #119

Medium
Brain teasers

Teaser Track 122

Sequence study #122

Medium
Brain teasers

Teaser Track 125

Sequence study #125

Medium
Brain teasers

Teaser Track 128

Sequence study #128

Medium
Brain teasers

Teaser Track 131

Sequence study #131

Medium
Brain teasers

Teaser Track 134

Sequence study #134

Medium
Brain teasers

Teaser Track 137

Sequence study #137

Medium
Brain teasers

Teaser Track 140

Sequence study #140

Medium
Brain teasers

Teaser Track 143

Sequence study #143

Medium
Brain teasers

Teaser Track 146

Sequence study #146

Medium
Brain teasers

Teaser Track 149

Sequence study #149

Medium
Brain teasers

Teaser Track 152

Sequence study #152

Medium
Brain teasers

Teaser Track 155

Sequence study #155

Medium
Brain teasers

Teaser Track 158

Sequence study #158

Medium
Brain teasers

Teaser Track 161

Sequence study #161

Medium
Brain teasers

Teaser Track 164

Sequence study #164

Medium
Brain teasers

Teaser Track 167

Sequence study #167

Medium
Brain teasers

Teaser Track 170

Sequence study #170

Medium
Brain teasers

Teaser Track 173

Sequence study #173

Medium
Brain teasers

Teaser Track 176

Sequence study #176

Medium
Brain teasers

Teaser Track 179

Sequence study #179

Medium
Brain teasers

Teaser Track 182

Sequence study #182

Medium
Brain teasers

Teaser Track 185

Sequence study #185

Medium
Brain teasers

Teaser Track 188

Sequence study #188

Medium
Brain teasers

Teaser Track 191

Sequence study #191

Medium
Brain teasers

Teaser Track 194

Sequence study #194

Medium
Brain teasers

Teaser Track 197

Sequence study #197

Medium
Brain teasers

Teaser Track 200

Sequence study #200

Medium
Brain teasers

Teaser Track 203

Sequence study #203

Medium
Brain teasers

Teaser Track 206

Sequence study #206

Medium
Brain teasers

Teaser Track 209

Sequence study #209

Medium
Brain teasers

Teaser Track 212

Sequence study #212

Medium
Brain teasers

Teaser Track 215

Sequence study #215

Medium
Brain teasers

Teaser Track 218

Sequence study #218

Medium
Brain teasers

Teaser Track 221

Sequence study #221

Medium
Brain teasers

Teaser Track 224

Sequence study #224

Medium
Brain teasers

Teaser Track 227

Sequence study #227

Medium
Brain teasers

Teaser Track 230

Sequence study #230

Medium
Brain teasers

Teaser Track 233

Sequence study #233

Medium
Brain teasers

Teaser Track 236

Sequence study #236

Medium
Brain teasers

Teaser Track 239

Sequence study #239

Medium
Brain teasers

Teaser Track 242

Sequence study #242

Medium
Brain teasers

Teaser Track 245

Sequence study #245

Medium
Brain teasers

Teaser Track 248

Sequence study #248

Medium
Brain teasers

Teaser Track 251

Sequence study #251

Medium
Brain teasers

Teaser Track 254

Sequence study #254

Medium
Brain teasers

Teaser Track 257

Sequence study #257

Medium
Brain teasers

Teaser Track 260

Sequence study #260

Medium
Brain teasers

Teaser Track 263

Sequence study #263

Medium
Brain teasers

Teaser Track 266

Sequence study #266

Medium
Brain teasers

Teaser Track 269

Sequence study #269

Medium
Brain teasers

Teaser Track 272

Sequence study #272

Medium
Brain teasers

Teaser Track 275

Sequence study #275

Medium
Brain teasers

Teaser Track 278

Sequence study #278

Medium
Brain teasers

Teaser Track 281

Sequence study #281

Medium
Brain teasers

Teaser Track 284

Sequence study #284

Medium
Brain teasers

Teaser Track 287

Sequence study #287

Medium
Brain teasers

Teaser Track 290

Sequence study #290

Medium
Brain teasers

Teaser Track 293

Sequence study #293

Medium
Brain teasers

Teaser Track 296

Sequence study #296

Medium
Brain teasers

Teaser Track 299

Sequence study #299

Medium
Brain teasers

Teaser Track 302

Sequence study #302

Medium
Brain teasers

Teaser Track 305

Sequence study #305

Medium
Brain teasers

Teaser Track 308

Sequence study #308

Medium
Brain teasers

Teaser Track 311

Sequence study #311

Medium
Brain teasers

Teaser Track 314

Sequence study #314

Medium
Brain teasers

Teaser Track 317

Sequence study #317

Medium
Brain teasers

Teaser Track 320

Sequence study #320

Medium
Brain teasers

Teaser Track 323

Sequence study #323

Medium
Brain teasers

Teaser Track 326

Sequence study #326

Medium
Brain teasers

Teaser Track 329

Sequence study #329

Medium
Brain teasers

Teaser Track 332

Sequence study #332

Medium
Brain teasers

Teaser Track 335

Sequence study #335

Medium
Brain teasers

Teaser Track 338

Sequence study #338

Medium
Brain teasers

Teaser Track 341

Sequence study #341

Medium
Brain teasers

Teaser Track 344

Sequence study #344

Medium
Brain teasers

Teaser Track 347

Sequence study #347

Medium
Brain teasers

Teaser Track 350

Sequence study #350

Medium
Brain teasers

Teaser Track 353

Sequence study #353

Medium
Brain teasers

Teaser Track 356

Sequence study #356

Medium
Brain teasers

Teaser Track 359

Sequence study #359

Medium
Brain teasers

Teaser Track 362

Sequence study #362

Medium
Brain teasers

Teaser Track 365

Sequence study #365

Medium
Brain teasers

Teaser Track 368

Sequence study #368

Medium
Brain teasers

Teaser Track 371

Sequence study #371

Medium
Brain teasers

Teaser Track 374

Sequence study #374

Medium
Brain teasers

Teaser Track 377

Sequence study #377

Medium
Brain teasers

Teaser Track 380

Sequence study #380

Medium
Brain teasers

Teaser Track 383

Sequence study #383

Medium
Brain teasers

Teaser Track 386

Sequence study #386

Medium
Brain teasers

Teaser Track 389

Sequence study #389

Medium
Brain teasers

Teaser Track 392

Sequence study #392

Medium
Brain teasers

Teaser Track 395

Sequence study #395

Medium
Brain teasers

Teaser Track 398

Sequence study #398

Medium
Brain teasers

Teaser Track 401

Sequence study #401

Medium
Brain teasers

Teaser Track 404

Sequence study #404

Medium
Brain teasers

Teaser Track 407

Sequence study #407

Medium
Brain teasers

Teaser Track 410

Sequence study #410

Medium
Brain teasers

Teaser Track 413

Sequence study #413

Medium
Brain teasers

Teaser Track 416

Sequence study #416

Medium
Brain teasers

Teaser Track 419

Sequence study #419

Medium
Brain teasers

Teaser Track 422

Sequence study #422

Medium
Brain teasers

Teaser Track 425

Sequence study #425

Medium
Brain teasers

Teaser Track 428

Sequence study #428

Medium
Brain teasers

Teaser Track 431

Sequence study #431

Medium
Brain teasers

Teaser Track 434

Sequence study #434

Medium
Brain teasers

Teaser Track 437

Sequence study #437

Medium
Brain teasers

Teaser Track 440

Sequence study #440

Medium
Brain teasers

Teaser Track 443

Sequence study #443

Medium
Brain teasers

Teaser Track 446

Sequence study #446

Medium
Brain teasers

Teaser Track 449

Sequence study #449

Medium
Brain teasers

Teaser Track 452

Sequence study #452

Medium
Brain teasers

Teaser Track 455

Sequence study #455

Medium
Brain teasers

Teaser Track 458

Sequence study #458

Medium
Brain teasers

Teaser Track 461

Sequence study #461

Medium
Brain teasers

Teaser Track 464

Sequence study #464

Medium
Brain teasers

Teaser Track 467

Sequence study #467

Medium
Brain teasers

Teaser Track 470

Sequence study #470

Medium
Brain teasers

Teaser Track 473

Sequence study #473

Medium
Brain teasers

Teaser Track 476

Sequence study #476

Medium
Brain teasers

Teaser Track 479

Sequence study #479

Medium
Brain teasers

Teaser Track 482

Sequence study #482

Medium
Brain teasers

Teaser Track 485

Sequence study #485

Medium
Brain teasers

Teaser Track 488

Sequence study #488

Medium
Brain teasers

Teaser Track 491

Sequence study #491

Medium
Brain teasers

Teaser Track 494

Sequence study #494

Medium
Brain teasers

Teaser Track 497

Sequence study #497

Medium
Brain teasers

Teaser Track 500

Sequence study #500

Medium
Brain teasers

Teaser Track 503

Sequence study #503

Medium
Brain teasers

Teaser Track 506

Sequence study #506

Medium
Brain teasers

Teaser Track 509

Sequence study #509

Medium
Brain teasers

Teaser Track 512

Sequence study #512

Medium
Brain teasers

Teaser Track 515

Sequence study #515

Medium
Brain teasers

Teaser Track 521

Sequence study #521

Medium
Brain teasers

Teaser Track 524

Sequence study #524

Medium
Brain teasers

Teaser Track 527

Sequence study #527

Medium
Brain teasers

Teaser Track 530

Sequence study #530

Medium
Brain teasers

Teaser Track 533

Sequence study #533

Medium
Brain teasers

Teaser Track 536

Sequence study #536

Medium
Brain teasers

Teaser Track 539

Sequence study #539

Medium
Brain teasers

Teaser Track 542

Sequence study #542

Medium
Brain teasers

Teaser Track 545

Sequence study #545

Medium
Brain teasers

Teaser Track 548

Sequence study #548

Medium
Brain teasers

Teaser Track 551

Sequence study #551

Medium
Brain teasers

Teaser Track 554

Sequence study #554

Medium
Brain teasers

Teaser Track 557

Sequence study #557

Medium
Brain teasers

Teaser Track 560

Sequence study #560

Medium
Brain teasers

Teaser Track 563

Sequence study #563

Medium
Brain teasers

Teaser Track 566

Sequence study #566

Medium
Brain teasers

Water Jug Challenge

Measure exactly with imprecise tools.

Medium
Brain teasers

Clock Angle

How many degrees separate the hands?

Medium
Brain teasers

Birthday Paradox

Fewer people than you think creates a collision.

Expert
Brain teasers

Rope Burn Timer

Measure time with inconsistent fuses.

Medium
Brain teasers

Handshake Count

Every pair shakes once—how many total?

Medium
Brain teasers

Sum to Hundred

Insert operators between digits.

Expert
Brain teasers

Missing Dollar

Where did the dollar go?

Medium
Brain teasers

Pirates' Gold

Democratic pirates divide the treasure.

Expert
Brain teasers

Chessboard Grains

Exponential growth surprises the king.

Hard
Brain teasers

Lily Pad Pond

Exponential growth catches you by surprise.

Medium
Brain teasers

Witch's Brew

Three ingredients, specific proportions.

Medium
Brain teasers

Counting Ghosts

How many spirits haunt the mansion?

Medium
Brain teasers

Santa's Route

Visiting houses in optimal order.

Hard
Brain teasers

Ornament Pattern

Find the missing ornament count.

Medium
Brain teasers

Light Speed Travel

How long to reach the sun?

Easy
Brain teasers

DNA Base Pairs

Complete the sequence.

Easy
Brain teasers

Chemical Equation

Balance the reaction.

Medium