High-performance parallelized Expectimax game engine and probability calculator for Dice Chess, written in Scala 3.

High-performance analytical backend and data pipeline for Dice Chess. Ingests, normalizes, and analyzes 140k+ games using Scala 3, PostgreSQL, and the dicechess engine.

Frontend interface and interactive game visualizer for the Dice Chess Analytics platform.

Public play-vs-bot site for Dice Chess — anonymous, in-browser games against our engine bots, recorded to dicechess-analytics. SvelteKit 2 + Svelte 5, client-side Scala.js engine, PWA.

Authoritative real-time server for Dice Chess — human-vs-human play, the doubling cube, and a third-party Bot API. Phase 3: Scala 3, cats-effect, http4s, WebSocket, reusing the dice-chess engine on the JVM.

🧞 AI-powered Telegram bot for Paperless-ngx — chat with your document archive, upload and process documents, set metadata, and search — all from Telegram.

Descriptions of SoloLearn Coding Challenges (all 72, including pro) and solutions in C, Java, Python and Ruby

Everyone has their own personal reading history, and as we grow up, we are able to comprehend more and more complicated texts. But how do you estimate the level of difficulty of a given text, and how do you teach a computer to do that? In this project, you will find it out: write a program that determines how difficult the text is and for which age it is most suitable.

The AWK scripts to generate maze and find a path

Implementation and tests for graph pathfinding algorithms.

The optimal solution to the problem of counting unique IPv4 addresses in a huge text file.

A project for experimenting with OpenAPI specification and API testing.

Solutions for Hackerrank SQL problems

Not to sound overly serious, but it’s very important to manage your budget. This implies analyzing your expenses and estimating the income, which sometimes may be difficult to do yourself. Luckily, technology is there to assist: you can create your own personal budget manager program that counts the ins and outs and helps control the finances.

Everybody remembers this paper-and-pencil game from childhood: Tic-Tac-Toe, also known as Noughts and crosses or Xs and Os. A single mistake usually costs you the game, but thankfully it is simple enough that most players discover the best strategy quickly. Let’s program Tic-Tac-Toe and get playing!

My solutions for competition tests of Ozon Golang School.

For foreign language learners, it’s hard to remember new words, which is exactly what flashcards are for. Typically, flashcards show a hint (a task or a picture) on one side and the right answer on the other. Flashcards can be used to remember any sort of data, so if you want to create something useful and enhance your programming skills, this project is just right.

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Small exercises for programming Stream API predicates.

Solutions for the F# track

A Comparative Analysis of AI-Based Unit Test Generation Tools for Java Applications.

Implementation of education project from JetBrains Academy. Project description: https://hyperskill.org/projects/58/stages/316/implement

JetBrains Academy project. Spring Shell application to work with metro map. Implementation of graph pathfinding algorithms. Unit tests written by using Spock Framework.

Automated Testing Mentoring with Java: Basic [core track]. Solutions for practical tasks.

This task is created with intention to test your Java coding and analytical skills when you're at home, without stress and without any distractions. Do this task at your own pace.

Everything goes digital these days, and so does money. Today, most people have credit cards, which save us time, energy and nerves. From not having to carry a wallet full of cash to consumer protection, cards make our lives easier in many ways. In this project, you will develop a simple banking system with database.

You suddenly remember you need to call your aunt and wish her a happy birthday, but how do you find her number quickly in a giant phonebook? Write a program that will solve this problem once and forever: create a phonebook where you can easily, quickly and efficiently find necessary information. Names and numbers, here we come.

Laboratory for creating a training project. The goal is to create a tutorial project on working with dates in Java. The idea is to create a biorhythm calculator that allows you to select dates and print reports for different periods of time.

Simple projects from codecademy.com

Privacy is an important matter is the realm of the Internet. When sending a message, you want to be sure that no-one but the addressee with the key can read it. The entirety of the modern Web is encrypted - take https for example! Don’t stay behind: hop on the encryption/decryption train and learn the essential basics while implementing this simple project.

DEV-Intensive по Android на Kotlin

Dice Chess webhook bot: the engine's ONNX 2-ply expectimax (bring your own model) + opening book, on Google Cloud Run.

A Dice Chess webhook bot in Scala: the engine's Monte-Carlo search on the JVM, on Google Cloud Run.

Transport runtime for DiceChess webhook bots: HMAC signing, handshake, and HTTP wiring — callable from Java, Kotlin, or Scala.

Minimal Dice Chess webhook bot starter in Scala — no engine, no dependencies beyond the shared webhook runtime, random move by default. GraalVM native image on Azure Functions. MIT.

My journey through Hyperskill, captured in a portfolio of Python projects. Each solution is refactored for quality, tested with pytest, and statically checked with mypy.

Engine-powered Dice Chess webhook bot — aggressive king-hunt search + opening book, GraalVM native image on Azure Functions. Built from the dicechess-bot-scala template. AGPL.

Dice Chess webhook bot on Cloudflare Workers — runs the real engine (aggressive + opening book) via its Scala.js build, no container, no cold start. AGPL.

Bruno API tests for Azure functions

Token-holding ingest relay: forwards dicechess-play games to dicechess-analytics with the Bearer token, kept out of the browser. Node 26, plain node:http, deployed on Koyeb.

Dependency-free Python starter for Dice Chess bots — Use this template, run, play. MIT.

Zero-dependency TypeScript starter for Dice Chess bots — Use this template, run, play. MIT.

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Jegors Čemisovs' personal GitHub Pages site featuring technical blog posts, articles, and more.

Reference bot for the Dice Chess Bot API — an always-online opponent that dog-foods the API (JVM, wraps the engine).

A multi-module Gradle monorepo consolidating Java project solutions from JetBrains Academy (Hyperskill).

Implementation of the logical operator Flip-Flop in Java

Unit Test: the Good, the Bad, and by AI

Personal solutions to programming exercises on Exercism.org, covering multiple language tracks. Automatically synced from the platform.

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Exercism exercises in AWK.

We use numbers every day. But do you know how many different properties they have? Let's take a look at some of the amazing properties of numbers. After completing this project, you will write a program that knows how to determine whether a number is Palindromic or Gapful, or how to distinguish Spy numbers from others. Numbers can be fascinating!

Engine playing dice chess, for rules see https://dicechess.com/rules

Exercism exercises in Java.

Exercism exercises in Bash.

A collection of Power Query M scripts to interact with the Exercism.org API (v2), simplifying data extraction for tracks and exercises.

Solutions to exercises from the Scala track on Exercism.org.

A collection of custom Power Query (M) functions to extract data from the JFrog Artifactory REST API.

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A personal learning journey using an AI mentor (Scala Sage) to master http4s, Cats Effect, FS2, and ScalaTest.

Code snippets and exercises from an article "FS2: More Than Functional Streaming in Scala" by Riccardo Cardin

A repository demonstrating API testing using JetBrains HTTP Client and httpYac, featuring tests for an Azure function that implements the 'Change' exercise from Exercism.org

Examples of API tests for httpYac CLI

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AWK script to create a ER diagram for SAP Cloud Application Programming Model

This repository contains practical tasks and solutions for the 'CloudX Associate: MS Azure Java Developer' course at EPAM. It includes implementations using App Service, Container Apps, Azure Functions, Azure Storage, Azure Event Hub, Event Grid, Service Bus, Azure AD, Azure SQL, and CosmosDB.

This repository contains my coursework for the 'GenAI Foundations for Java Developers' course by EPAM Systems. The course focuses on creating generative applications using Large Language Models with the Semantic Kernel SDK. The repo includes practical tasks and a final graduation task of a simple RAG application.

A collection of SQL challenges and solutions from various courses and websites, aimed at enhancing database querying skills.

This repository contains coursework for EPAM's 'Introduction to Microservices' course. It includes two Java Spring Boot microservices: Resource Service for handling MP3 files and Song Service for managing song metadata.

Problem solving from Exercism.org in C Sharp

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Text game on blazor

Solving problems from the site Exercism in Power Query M language

This repository contains a RESTful API developed in Java using Spring Boot. The API calculates the readability score of a given text using various formulas such as the Automated Readability Index (ARI). It provides insights into the complexity of the text and suggests the appropriate age for comprehension.

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Practical Task for module Backend Core

Artificial intelligence is not just a smart system: it's a smart system capable of self-learning. In this project, you will create a simple interactive game where the computer will try to guess the animal that the person has in mind with the help of yes or no questions. During the game, the computer will extend its knowledge base by learning new facts about animals and using this information in the next game.

Practical Tasks for "EngX AI-Supported Engineering" course.

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A simple solution for roman to arabic numerals converter

This project aims to show how expensive extra function calls can be when defining a loop boundary.

JMeter: Performance and Load Testing

Explore California Microservice (educational project)

A small hotel reservation system.

Project to showcase the idea of using objects instead of data structures.

Jenkins Getting Started (jgsu) Course Materials - An update to my initial version of the course

Advanced Multithreading course practical tasks

This code is a proof of concept. The calculator can work with both Arabic (1,2,3,4,5 ...) and Roman (I, II, III, IV, V ...) numbers.

Practical task for course "Cucumber Essential Training"

The simple NativeScripte Application. Palindrome Checker.

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Demo project for SAP's Cloud Application Programming model framework.

Project to demonstrate during the presentation "Tests as Specification"

This project allows you to better understand the basic OOP, its main concepts such as classes, class methods and attributes, and get a taste of Kotlin.

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a small task for a technical interview

small task for the interview

The solution of a simple educational project made in a functional style.

The examples of spock framework unit tests

The homework for an intensive Java webinar. A multithread program that takes desktop screenshots in background and send them to the Dropbox server.

What boundary values to choose for good tests?

Mazes are amazing: keep running, find the exit if you can! If you are not too happy about getting stuck in the actual maze, you can entertain yourself with a virtual one. In this project, you will write a program that generates mazes and looks for a way out.

Get firsthand experience of creating a small inhabited universe and observe the many patterns in which this “life” can evolve. Generation by generation, watch the cells come and go, reacting to their environment, perishing from loneliness or finding comfort in company. In this project, you will write a simple “Game of Life”, a classic toy for programmers to entertain and educate themselves. Careful: might be hypnotizing!

Solution of education project "Learning Prograss Tracking" from JetBrains Academy.

Educational project from JetBrains Academy

JetBrains project

Comparition of two intervals algorithms. O(n) vs O(k*i*sqrt(n)) where n - is the length of numbers sequence, i - numbers of intervasl in the sequence and k is additional overhead of the binary algorithm.

This is a simple learning project for Spring Boot. The song copyright management system.

Binary algorithm to create intervals from numbers sequence

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Proof of concept

In this project, you’ll replace static blog data with JPA Entities and Repositories that connect to an in-memory H2 database as well as add new entity relationships.

Have you ever been worried about getting lost in the subway? Do you need to find a faster route to your destination? Write an application that will help you better navigate the complicated metro system.

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Software development fundamentals (2nd Semester)

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Laboratory for creating a training project.

Here’s a project for devoted matrix enthusiasts: learn to perform a variety of operations on matrices including addition, multiplication, finding the determinant, and dealing with inverse matrices. If you are working on your tech or math major, this project is a good chance for you to learn matrices in action and not just in your notebook.

The project demonstrates the capabilities of the Formattable interface

JetBrains Academy Java Track

A Readme Template For Tomorrow's Opensource

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We’re all quite used to our good old decimal system of numerals. But let’s not forget that there are other ways to count! Whether we need to convert numbers from one system to another just for fun or to store large data more efficiently, a converter proves helpful. In this project, you will create your own tool that will help you convert numbers from one system to another.

Databases and Information Systems Fundamentals

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Algoritmi un programmēšana

The Web is called so for a reason: all these pages are connected to many others through links, resembling a spider’s web. It’s easy to get lost and miss important links, so in this project you will write a program that might help. A Web Crawler collects and saves links from a given page, storing them in the memory for you to access later.

Prof of concept

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Everyone is familiar with Tic-tac-toe. Create a version of this game using the Swing graphics library. Teach a computer to play this game and compete against both your friend and AI.

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Everyone once played this simple game of tic-tac-toe. In this project, we will create a version of this game using the swing graphics library. We will teach the computer to play tic-tac-toe and will be able to fight both with our friend and with the computer.

We’re all quite used to our good old decimal system of numerals. But let’s not forget that there are other ways to count! Whether we need to convert numbers from one system to another just for fun or to store large data more efficiently, a converter proves helpful. In this project, you will create your own tool that will help you convert numbers from one system to another.

My very first test in Spock framework

Looks like you like challenges! This project, however, is not too tricky if you’re feeling like an advanced learner. A text editor you’re going to write allows to search for specific files and open them. Check out the prerequisites, and if you’re ready, let’s roll!

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You’ve come so far! Yet sometimes it’s nice to get back to old and simple basics: shall we remember some linear algebra? In this project, you will write a program that solves linear equations (you wish you had it back at school, don’t you?) It won’t be working with powers and radicals, but on the other hand, it will be able to handle matrices and complex numbers.

JetBrains Academy projects and problems of Python track

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Algebra un matemātiskā loģika

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You played this game when the Internet cut off, didn’t you? It is time to remember the good old days. In this project, you will create your own "Minesweeper" game.

If you are a beginner web developer, you need to know the basics of CSS and HTML. This project is great for those who need somewhere to start. Your goal is to create a stylized page with flashcards, each containing a question on one side and the answer on the other. You can choose any subject you want for your flashcards!

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The very simple one-class console menu system for JetBrains Academy projects.

Cinema has been a part of the entertainment industry for a long time: a good movie is a way to escape reality and live through a variety of emotions. The best cinema experience you can get is probably in a cinema theatre. In this project, you will create an application that helps manage a cinema theatre: sell tickets, check available seats, see sales statistics, and more.

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Write your own advanced version of the classic code breaking game "Bulls and Cows". Start with recreating the original version of the game and then take it to a new level.

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My solutions of problems from JetBrains Academy

SQL Essential

Errors are inevitable both in life and in the digital world. Errors occur here and there and everywhere, and in this project you will not only imitate this process, but also learn how to cope with errors. It is a chance to experience what early developers had to cope with at the dawn of the computer era. Low-level programming is fun and insightful: try it and you’ll see.

A simple avoider game created with Greenfoot IDE. The idea and base code was taken from the book "Creative Greenfoot".

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We’re all quite used to our good old decimal system of numerals. But let’s not forget that there are countless other ways to count! Whether we convert numbers from one system to another just for fun or to store large data more efficiently, a converter would be helpful. In this project you will create a mathematical helper that will help you convert numbers from system M to system N.

Student project based on "Spring in Action" book.

In the Internet, you can often find sites where you need to answer some questions. It can be educational sites, sites with psychological tests, job search services, or just entertaining sites like web quests. The common thing for them is the ability to answer questions (or quizzes) and then see some results. In this project, you will develop a multi-users web service for creating and solving quizzes.

Calculators are a very helpful tool that we all use on a regular basis. Why not create one yourself, and make it really special? In this project, you will write a calculator that not only adds, subtracts, and multiplies, but is also smart enough to remember your previous calculations.

A simple platform game developed in Greenfoot IDE. The source code from "Creative Greenfood" book.

Zombie Invasion interactive simulation