diff --git a/app/Dto/Repository/DataCaptchaRepository/DataCaptcha.php b/app/Dto/Repository/DataCaptchaRepository/DataCaptcha.php
new file mode 100644
index 0000000..8007dd8
--- /dev/null
+++ b/app/Dto/Repository/DataCaptchaRepository/DataCaptcha.php
@@ -0,0 +1,21 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Repository\DataCaptchaRepository;
+
+final readonly class DataCaptcha
+{
+    public function __construct(
+        private int $captchaId,
+        private array $coordinators,
+    ) { }
+
+    public function getCaptchaId(): int
+    {
+        return $this->captchaId;
+    }
+
+    public function getCoordinators(): array
+    {
+        return $this->coordinators;
+    }
+}
diff --git a/app/Dto/Request/Api/V1/Captcha/CheckingDto.php b/app/Dto/Request/Api/V1/Captcha/CheckingDto.php
new file mode 100644
index 0000000..81b31d9
--- /dev/null
+++ b/app/Dto/Request/Api/V1/Captcha/CheckingDto.php
@@ -0,0 +1,29 @@
+<?php declare(strict_types=1);
+
+namespace App\Dto\Request\Api\V1\Captcha;
+
+use App\Dto\Request\Dto;
+
+final readonly class CheckingDto extends Dto
+{
+    public function __construct(
+        private CaptchaPublicToken $captchaPublicToken,
+        private string $captchaKey,
+        private array $coordinators,
+    ) { }
+
+    public function getCaptchaPublicToken(): CaptchaPublicToken
+    {
+        return $this->captchaPublicToken;
+    }
+
+    public function getCaptchaKey(): string
+    {
+        return $this->captchaKey;
+    }
+
+    public function getCoordinators(): array
+    {
+        return $this->coordinators;
+    }
+}
diff --git a/app/Enums/CaptchaLogType.php b/app/Enums/CaptchaLogType.php
index 34f2dc2..6ccfefc 100644
--- a/app/Enums/CaptchaLogType.php
+++ b/app/Enums/CaptchaLogType.php
@@ -5,4 +5,6 @@ namespace App\Enums;
 enum CaptchaLogType: int
 {
     case Created = 1;
+    case Error = 2;
+    case Verified = 3;
 }
diff --git a/app/Http/Controllers/Api/V1/CaptchaController.php b/app/Http/Controllers/Api/V1/CaptchaController.php
index 989c759..070a06c 100644
--- a/app/Http/Controllers/Api/V1/CaptchaController.php
+++ b/app/Http/Controllers/Api/V1/CaptchaController.php
@@ -3,7 +3,9 @@
 namespace App\Http\Controllers\Api\V1;
 
 use App\Http\Requests\Api\V1\Captcha\CaptchaRequest;
+use App\Http\Requests\Api\V1\Captcha\CheckingRequest;
 use App\Http\Resources\Api\V1\Captcha;
+use App\Http\Resources\Api\V1\CaptchaVerified;
 use App\Services\Api\V1\CaptchaService;
 use Illuminate\Http\JsonResponse;
 
@@ -24,4 +26,16 @@ final class CaptchaController extends Controller
 
         return response()->json(new Captcha($result));
     }
+
+    public function checking(CheckingRequest $request): JsonResponse
+    {
+        $maxCountError = config('captcha.validate_max_count_errors');
+        $params = $request->getDto();
+        $result = $this->captchaService->checking($params, $maxCountError);
+        if (!$result->isSuccess()) {
+            return response()->json($result->getData())->setStatusCode($result->getCode());
+        }
+
+        return response()->json(new CaptchaVerified($result));
+    }
 }
diff --git a/app/Http/Requests/Api/V1/Captcha/CheckingRequest.php b/app/Http/Requests/Api/V1/Captcha/CheckingRequest.php
new file mode 100644
index 0000000..5601d60
--- /dev/null
+++ b/app/Http/Requests/Api/V1/Captcha/CheckingRequest.php
@@ -0,0 +1,68 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Requests\Api\V1\Captcha;
+
+use App\Contracts\FormRequestDto;
+use App\Dto\HttpUserData;
+use App\Dto\Request\Api\V1\Captcha\CaptchaPublicToken;
+use App\Dto\Request\Api\V1\Captcha\CheckingDto;
+use App\Models\CaptchaToken;
+use App\Repositories\CaptchaTokenRepository;
+use Illuminate\Foundation\Http\FormRequest;
+
+final class CheckingRequest extends FormRequest implements FormRequestDto
+{
+    private readonly CaptchaToken $captchaToken;
+
+    /**
+     * Determine if the user is authorized to make this request.
+     */
+    public function authorize(CaptchaTokenRepository $captchaTokenRepository): bool
+    {
+        if (!$this->hasHeader('public-token')) {
+            return false;
+        }
+        $captchaToken = $captchaTokenRepository->getCaptchaTokenByPublicToken($this->header('public-token'));
+        if (is_null($captchaToken)) {
+            return false;
+        }
+
+        $this->captchaToken = $captchaToken;
+
+        return true;
+    }
+
+    /**
+     * Get the validation rules that apply to the request.
+     */
+    public function rules(): array
+    {
+        return [
+            'captcha_key' => ['required', 'string', 'max:75'],
+            'verification' => ['required', 'array'],
+            'verification.*' => ['required', 'array', 'size:2'],
+            'verification.*.x' => ['required', 'numeric', 'min:0'],
+            'verification.*.y' => ['required', 'numeric', 'min:0'],
+        ];
+    }
+
+    public function getDto(): CheckingDto
+    {
+        $httpUserData = new HttpUserData(
+            $this->getClientIp(),
+            $this->userAgent(),
+            $this->header('referer')
+        );
+
+        $captchaPublicToken = new CaptchaPublicToken(
+            $this->captchaToken,
+            $httpUserData
+        );
+
+        return new CheckingDto(
+            captchaPublicToken: $captchaPublicToken,
+            captchaKey: $this->input('captcha_key'),
+            coordinators: $this->input('verification'),
+        );
+    }
+}
diff --git a/app/Http/Resources/Api/V1/CaptchaVerified.php b/app/Http/Resources/Api/V1/CaptchaVerified.php
new file mode 100644
index 0000000..febee6d
--- /dev/null
+++ b/app/Http/Resources/Api/V1/CaptchaVerified.php
@@ -0,0 +1,28 @@
+<?php declare(strict_types=1);
+
+namespace App\Http\Resources\Api\V1;
+
+use App\ServiceResults\Api\V1\CaptchaService\CaptchaVerifiedResult;
+use Illuminate\Http\Request;
+use Illuminate\Http\Resources\Json\JsonResource;
+
+final class CaptchaVerified extends JsonResource
+{
+    /**
+     * @var CaptchaVerifiedResult
+     */
+    public $resource;
+
+    /**
+     * Transform the resource into an array.
+     *
+     * @param  Request $request
+     * @return array
+     */
+    public function toArray(Request $request): array
+    {
+        return [
+            'captcha_key' => $this->resource->getKey()
+        ];
+    }
+}
diff --git a/app/Models/CaptchaLog.php b/app/Models/CaptchaLog.php
index 1689454..a2f564b 100644
--- a/app/Models/CaptchaLog.php
+++ b/app/Models/CaptchaLog.php
@@ -20,6 +20,7 @@ final class CaptchaLog extends Model
      * @var array
      */
     protected $fillable = [
+        'captcha_id',
         'type',
         'ip',
         'user_agent',
diff --git a/app/Providers/RouteServiceProvider.php b/app/Providers/RouteServiceProvider.php
index f953b4c..284cff4 100644
--- a/app/Providers/RouteServiceProvider.php
+++ b/app/Providers/RouteServiceProvider.php
@@ -50,5 +50,10 @@ class RouteServiceProvider extends ServiceProvider
                 Limit::perHour(config('rate_limiting.login_max_email_request', 10))->by($request->getClientIp() . '-' . $request->input('email')),
             ];
         });
+        RateLimiter::for('captcha-checking', function (Request $request) {
+           return [
+                Limit::perMinute(config('captcha.validate_max_count_errors', 5))->by($request->input('captcha_key', null)),
+           ];
+        });
     }
 }
diff --git a/app/Repositories/CaptchaLogRepository.php b/app/Repositories/CaptchaLogRepository.php
new file mode 100644
index 0000000..6be864d
--- /dev/null
+++ b/app/Repositories/CaptchaLogRepository.php
@@ -0,0 +1,20 @@
+<?php declare(strict_types=1);
+
+namespace App\Repositories;
+
+use App\Enums\CaptchaLogType;
+use App\Models\CaptchaLog;
+use Illuminate\Database\Eloquent\Builder;
+
+final class CaptchaLogRepository
+{
+    public function countByType(CaptchaLogType $type, ?int $captchaId = null): int
+    {
+        return CaptchaLog::query()
+            ->when($captchaId, function (Builder $query, int $captchaId) {
+                $query->where('id', $captchaId);
+            })
+            ->where('type', '=', $type)
+            ->count();
+    }
+}
diff --git a/app/Repositories/CaptchaRepository.php b/app/Repositories/CaptchaRepository.php
new file mode 100644
index 0000000..18f6184
--- /dev/null
+++ b/app/Repositories/CaptchaRepository.php
@@ -0,0 +1,13 @@
+<?php declare(strict_types=1);
+
+namespace App\Repositories;
+
+use App\Models\Captcha;
+
+final class CaptchaRepository
+{
+    public function getCaptchaById(int $id): ?Captcha
+    {
+        return Captcha::query()->where('id', $id)->first();
+    }
+}
diff --git a/app/Repositories/DataCaptchaRepository.php b/app/Repositories/DataCaptchaRepository.php
index 464eaf8..570d362 100644
--- a/app/Repositories/DataCaptchaRepository.php
+++ b/app/Repositories/DataCaptchaRepository.php
@@ -2,6 +2,7 @@
 
 namespace App\Repositories;
 
+use App\Dto\Repository\DataCaptchaRepository\DataCaptcha;
 use App\Exceptions\Repositories\DataCaptchaRepositoryException;
 use App\Models\Captcha;
 use App\Services\GenerateTokenCommand\GenerateTokenUlidCommand;
@@ -28,4 +29,22 @@ final readonly class DataCaptchaRepository
 
         return $key;
     }
+
+    public function getByKey(string $key): ?DataCaptcha
+    {
+        $dataCaptcha = Cache::driver('redis')->get($key);
+        if (is_null($dataCaptcha)) {
+            return null;
+        }
+
+        return new DataCaptcha(
+            captchaId: $dataCaptcha['id'],
+            coordinators: $dataCaptcha['coordinators'],
+        );
+    }
+
+    public function destroy(string $key): void
+    {
+        Cache::driver('redis')->delete($key);
+    }
 }
diff --git a/app/ServiceResults/Api/V1/CaptchaService/CaptchaVerifiedResult.php b/app/ServiceResults/Api/V1/CaptchaService/CaptchaVerifiedResult.php
new file mode 100644
index 0000000..de9d62c
--- /dev/null
+++ b/app/ServiceResults/Api/V1/CaptchaService/CaptchaVerifiedResult.php
@@ -0,0 +1,17 @@
+<?php declare(strict_types=1);
+
+namespace App\ServiceResults\Api\V1\CaptchaService;
+
+use App\ServiceResults\ServiceResult;
+
+final class CaptchaVerifiedResult extends ServiceResult
+{
+    public function __construct(
+        private readonly string $key
+    ) { }
+
+    public function getKey(): string
+    {
+        return $this->key;
+    }
+}
diff --git a/app/Services/Api/V1/CaptchaService.php b/app/Services/Api/V1/CaptchaService.php
index 008e41a..a64172a 100644
--- a/app/Services/Api/V1/CaptchaService.php
+++ b/app/Services/Api/V1/CaptchaService.php
@@ -3,10 +3,17 @@
 namespace App\Services\Api\V1;
 
 use App\Dto\Request\Api\V1\Captcha\CaptchaPublicToken;
+use App\Dto\Request\Api\V1\Captcha\CheckingDto;
+use App\Enums\CaptchaLogType;
+use App\Repositories\CaptchaLogRepository;
+use App\Repositories\CaptchaRepository;
 use App\Repositories\DataCaptchaRepository;
 use App\ServiceResults\Api\V1\CaptchaService\Captcha;
+use App\ServiceResults\Api\V1\CaptchaService\CaptchaVerifiedResult;
 use App\ServiceResults\ServiceResultError;
 use App\Services\Captcha\CaptchaHandler;
+use App\Services\Captcha\CheckingCommand;
+use App\Services\CaptchaLog\CaptchaLogHandler;
 use App\Services\Service;
 use Carbon\Carbon;
 use Illuminate\Support\Facades\DB;
@@ -16,7 +23,11 @@ final class CaptchaService extends Service
     public function __construct(
         private readonly CaptchaGenerateService $captchaGenerateService,
         private readonly CaptchaHandler $captchaHandler,
+        private readonly CaptchaLogHandler $captchaLogHandler,
         private readonly DataCaptchaRepository $dataCaptchaRepository,
+        private readonly CaptchaLogRepository $captchaLogRepository,
+        private readonly CaptchaRepository $captchaRepository,
+        private readonly CheckingCommand $checkingCommand,
     ) { }
 
     public function createKeyWithCaptcha(CaptchaPublicToken $captchaPublicToken, Carbon $expires): ServiceResultError | Captcha
@@ -43,4 +54,40 @@ final class CaptchaService extends Service
             key: $captchaKey
         );
     }
+
+    public function checking(CheckingDto $checkingDto, int $maxCountError): ServiceResultError | CaptchaVerifiedResult
+    {
+        try {
+            $captchaData = $this->dataCaptchaRepository->getByKey($checkingDto->getCaptchaKey());
+            if (is_null($captchaData)) {
+                return $this->errValidate(__('Captcha not found or verification period has expired. Please try to refresh the captcha.'));
+            }
+            if (!$this->checkingCommand->execute($captchaData->getCoordinators(), $checkingDto->getCoordinators())) {
+                $this->captchaLogHandler->handleStore($captchaData->getCaptchaId(), CaptchaLogType::Error, $checkingDto->getCaptchaPublicToken()->getHttpUserData());
+                return $this->errValidate(__('CAPTCHA validation failed. Please try again.'));
+            }
+            $result = DB::transaction(function () use ($checkingDto, $captchaData, $maxCountError) {
+                $errorCount = $this->captchaLogRepository->countByType(CaptchaLogType::Error, $captchaData->getCaptchaId());
+                if ($errorCount > $maxCountError) {
+                    $this->dataCaptchaRepository->destroy($checkingDto->getCaptchaKey());
+                    return $this->errValidate(__('You have exceeded the number of attempts. Please refresh the captcha.'));
+                }
+
+                $this->captchaLogHandler->handleStore($captchaData->getCaptchaId(), CaptchaLogType::Verified, $checkingDto->getCaptchaPublicToken()->getHttpUserData());
+                $this->dataCaptchaRepository->destroy($checkingDto->getCaptchaKey());
+
+                $modelCaptcha = $this->captchaRepository->getCaptchaById($captchaData->getCaptchaId());
+                if (is_null($modelCaptcha)) {
+                    return $this->errValidate(__('Captcha not found or verification period has expired. Please try to refresh the captcha.'));
+                }
+
+                return new CaptchaVerifiedResult(key: $modelCaptcha->uuid);
+            });
+        } catch (\Throwable $e) {
+            report($e);
+            return $this->errService('Captcha service error!');
+        }
+
+        return $result;
+    }
 }
diff --git a/app/Services/Captcha/CaptchaHandler.php b/app/Services/Captcha/CaptchaHandler.php
index 12fd273..43aa1ce 100644
--- a/app/Services/Captcha/CaptchaHandler.php
+++ b/app/Services/Captcha/CaptchaHandler.php
@@ -21,7 +21,7 @@ final readonly class CaptchaHandler
         $captcha = $captchaToken->captchas()->create([
             'uuid' => $this->uuidCommand->unique($captchaToken->captchas()->getQuery(), 'uuid')
         ]);
-        $this->captchaLogHandler->handleStore($captcha, CaptchaLogType::Created, $httpUserData);
+        $this->captchaLogHandler->handleStore($captcha->id, CaptchaLogType::Created, $httpUserData);
 
         return $captcha;
     }
diff --git a/app/Services/Captcha/CheckingCommand.php b/app/Services/Captcha/CheckingCommand.php
new file mode 100644
index 0000000..286db18
--- /dev/null
+++ b/app/Services/Captcha/CheckingCommand.php
@@ -0,0 +1,53 @@
+<?php declare(strict_types=1);
+
+namespace App\Services\Captcha;
+
+use App\Captcha\Dto\Coordinators;
+
+final readonly class CheckingCommand
+{
+
+    /**
+     * @param array $captchaCoordinators
+     * @param array $userCoordinators
+     * @return bool
+     */
+    public function execute(array $captchaCoordinators, array $userCoordinators): bool
+    {
+        foreach ($captchaCoordinators as $index => $coordinators) {
+            /**
+             * @var Coordinators $coordinators
+             */
+
+            if (empty($userCoordinators[$index]) || !isset($userCoordinators[$index]['x']) || !isset($userCoordinators[$index]['y'])) {
+                return false;
+            }
+
+            if (!$this->isInside($coordinators, $userCoordinators[$index])) {
+                return false;
+            }
+        }
+
+        return true;
+    }
+
+    private function isInside(Coordinators $captchaCoordinators, array $userCoordinators): bool
+    {
+        $xMin = min($captchaCoordinators->getX1(), $captchaCoordinators->getX2(), $captchaCoordinators->getX3(), $captchaCoordinators->getX4());
+        $xMax = max($captchaCoordinators->getX1(), $captchaCoordinators->getX2(), $captchaCoordinators->getX3(), $captchaCoordinators->getX4());
+
+        $yMin = min($captchaCoordinators->getY1(), $captchaCoordinators->getY2(), $captchaCoordinators->getY3(), $captchaCoordinators->getY4());
+        $yMax = max($captchaCoordinators->getY1(), $captchaCoordinators->getY2(), $captchaCoordinators->getY3(), $captchaCoordinators->getY4());
+
+        if (
+            $xMin > $userCoordinators['x']
+            || $xMax < $userCoordinators['x']
+            || $yMin > $userCoordinators['y']
+            || $yMax < $userCoordinators['y']
+        ) {
+            return false;
+        }
+
+        return true;
+    }
+}
diff --git a/app/Services/CaptchaLog/CaptchaLogHandler.php b/app/Services/CaptchaLog/CaptchaLogHandler.php
index c0cc2cf..bba2f51 100644
--- a/app/Services/CaptchaLog/CaptchaLogHandler.php
+++ b/app/Services/CaptchaLog/CaptchaLogHandler.php
@@ -10,13 +10,24 @@ use Illuminate\Support\Str;
 
 final readonly class CaptchaLogHandler
 {
-    public function handleStore(Captcha $captcha, CaptchaLogType $captchaLogType, HttpUserData $httpUserData): CaptchaLog
+    public function handleStore(int $captchaId, CaptchaLogType $captchaLogType, HttpUserData $httpUserData): CaptchaLog
     {
-        return $captcha->captchaLogs()->create([
+        $userAgent = $httpUserData->getUserAgent();
+        if (!is_null($userAgent)) {
+            $userAgent = Str::limit($userAgent, 255, '');
+        }
+
+        $referer = $httpUserData->getReferer();
+        if (!is_null($referer)) {
+            $referer = Str::limit($referer, 10000, '');
+        }
+
+        return CaptchaLog::create([
+            'captcha_id' => $captchaId,
             'type' => $captchaLogType,
             'ip' => $httpUserData->getClientIp(),
-            'user_agent' => Str::limit($httpUserData->getUserAgent(), 255, ''),
-            'referer' => Str::limit($httpUserData->getReferer(), 10000, ''),
+            'user_agent' => $userAgent,
+            'referer' => $referer,
         ]);
     }
 }
diff --git a/config/captcha.php b/config/captcha.php
index a640364..4943a2f 100644
--- a/config/captcha.php
+++ b/config/captcha.php
@@ -2,6 +2,7 @@
 
 return [
     'waiting_for_captcha_verification_in_seconds' => env('WAITING_FOR_CAPTCHA_VERIFICATION_IN_SECONDS', 900),
+    'validate_max_count_errors' => env('CAPTCHA_VALIDATE_MAX_COUNT_ERRORS', 3),
     'imageClass' => \App\Captcha\Images\Image::class,
     'types' => [
         'string' => [
diff --git a/lang/en.json b/lang/en.json
index c9cf9e4..25d656a 100644
--- a/lang/en.json
+++ b/lang/en.json
@@ -62,5 +62,8 @@
     "Captcha token created successfully": "Captcha token created successfully",
     "Captcha token updated successfully": "Captcha token updated successfully",
     "The captcha token has been removed": "The captcha token has been removed",
-    "Failed to generate token.": "Failed to generate token."
+    "Failed to generate token.": "Failed to generate token.",
+    "Captcha not found or verification period has expired. Please try to refresh the captcha.": "Captcha not found or verification period has expired. Please try to refresh the captcha.",
+    "CAPTCHA validation failed. Please try again.": "CAPTCHA validation failed. Please try again.",
+    "You have exceeded the number of attempts. Please refresh the captcha.": "You have exceeded the number of attempts. Please refresh the captcha."
 }
diff --git a/lang/ru.json b/lang/ru.json
index 81b8482..6a9f7ad 100644
--- a/lang/ru.json
+++ b/lang/ru.json
@@ -62,5 +62,8 @@
     "Captcha token created successfully": "Токен капчи успешно создан",
     "Captcha token updated successfully": "Токен капчи успешно обновлен",
     "The captcha token has been removed": "Токен капчи был удален",
-    "Failed to generate token.": "Не удалось сгенерировать токен."
+    "Failed to generate token.": "Не удалось сгенерировать токен.",
+    "Captcha not found or verification period has expired. Please try to refresh the captcha.": "Капча не найдена или истёк срок проверки. По пробуйтн обновить капчу.",
+    "CAPTCHA validation failed. Please try again.": "Не удалось пройти проверку CAPTCHA. Пожалуйста, попробуйте еще раз.",
+    "You have exceeded the number of attempts. Please refresh the captcha.": "Вы превысили количество попыток. Обновите каптчу."
 }
diff --git a/public/swagger.json b/public/swagger.json
index 6d41a88..0b2aad4 100644
--- a/public/swagger.json
+++ b/public/swagger.json
@@ -198,15 +198,12 @@
             "CaptchaVerification": {
                 "type": "object",
                 "properties": {
-                    "status": {
-                        "type": "boolean"
-                    },
-                    "message": {
+                    "captcha_key": {
                         "type": "string"
                     }
                 },
                 "required": [
-                    "status", "message"
+                    "captcha_key"
                 ]
             },
             "CaptchaChecking": {
diff --git a/routes/api-v1.php b/routes/api-v1.php
index a6295b9..fcbfb6b 100644
--- a/routes/api-v1.php
+++ b/routes/api-v1.php
@@ -15,3 +15,4 @@ use Illuminate\Support\Facades\Route;
 */
 
 Route::get('/captcha', [\App\Http\Controllers\Api\V1\CaptchaController::class, 'getCaptcha']);
+Route::middleware(['throttle:captcha-checking'])->post('/captcha', [\App\Http\Controllers\Api\V1\CaptchaController::class, 'checking']);