| #8402 | Kto wygrał? [C]PA 2024 Runda 1 | |
| #8403 | Liderzy [B]PA 2024 Runda 1 | |
| #8404 | Modernizacja Bajtocji [A]PA 2024 Runda 1 | |
| #8405 | Znaczki pocztowe [C]PA 2024 Runda 2 | |
| #8406 | Alchemik Bajtazar [B]PA 2024 Runda 2 | |
| #8407 | Grupa permutacji [A]PA 2024 Runda 2 | |
| #8408 | Obrazy [C]PA 2024 Runda 3 | |
| #8409 | Żelki [B]PA 2024 Runda 3 | |
| #8410 | Splatanie ciągów [A]PA 2024 Runda 3 | |
| #8411 | Łamigłówka 3 [C]PA 2024 Runda 4 | |
| #8412 | Desant 3 [B]PA 2024 Runda 4 | |
| #8413 | Kolorowy las [A]PA 2024 Runda 4 | |
| #8416 | Dzielniki [B]PA 2024 Runda 5Interactive | |
| #8420 | CiphertextPetrozavodsk Summer 2018 Day 1 | |
| #8421 | Tree HullPetrozavodsk Summer 2018 Day 1 | |
| #8422 | Tree Average WeightPetrozavodsk Summer 2018 Day 1 | |
| #8423 | Intersection of ParabolasPetrozavodsk Summer 2018 Day 1 | |
| #8424 | HammingPetrozavodsk Summer 2018 Day 1 | |
| #8425 | KnapsackPetrozavodsk Summer 2018 Day 1 | |
| #8426 | Algebra on SegmentPetrozavodsk Summer 2018 Day 1 | |
| #8427 | Continue the SequencePetrozavodsk Summer 2018 Day 1 | |
| #8428 | Partition into TeamsPetrozavodsk Summer 2018 Day 1 | |
| #8429 | Determinant of a GraphPetrozavodsk Summer 2018 Day 1 | |
| #8430 | Three ServersPetrozavodsk Winter 2016 Day 8 | |
| #8431 | Game on Bipartite GraphPetrozavodsk Winter 2016 Day 8Interactive | |
| #8432 | Black and White BoardPetrozavodsk Winter 2016 Day 8 | |
| #8433 | CatenaryPetrozavodsk Winter 2016 Day 8 | |
| #8434 | Evacuation PlanPetrozavodsk Winter 2016 Day 8 | |
| #8435 | Empty VesselsPetrozavodsk Winter 2016 Day 8 | |
| #8436 | Maximum ProductPetrozavodsk Winter 2016 Day 8 | |
| #8437 | Biathlon 2.0Petrozavodsk Winter 2016 Day 8 | |
| #8438 | Archaeological ResearchPetrozavodsk Winter 2016 Day 8 | |
| #8439 | SocketsPetrozavodsk Winter 2016 Day 8 | |
| #8440 | Toll RoadsPetrozavodsk Winter 2016 Day 8 | |
| #8467 | Binary StringsPetrozavodsk Winter 2024 Day 4 | |
| #8468 | Collinear ArrangementsPetrozavodsk Winter 2024 Day 4 | |
| #8469 | Comedy’s Not OmnipotentPetrozavodsk Winter 2024 Day 4Interactive | |
| #8470 | Deep AbyssPetrozavodsk Winter 2024 Day 4 | |
| #8471 | Lines on a Phone ScreenPetrozavodsk Winter 2024 Day 4 | |
| #8472 | MajorityPetrozavodsk Winter 2024 Day 4 | |
| #8473 | Matrices and DeterminantsPetrozavodsk Winter 2024 Day 4 | |
| #8474 | Matrices and SumsPetrozavodsk Winter 2024 Day 4 | |
| #8475 | Palindrome StringsPetrozavodsk Winter 2024 Day 4 | |
| #8476 | Apple Family ReunionPetrozavodsk Winter 2024 Day 4 | |
| #8477 | Twinning TotemPetrozavodsk Winter 2024 Day 4 | |
| #8478 | Count the OrdersPetrozavodsk Winter 2024 Day 4 | |
| #8479 | Simple Math ProblemPetrozavodsk Winter 2024 Day 4 | |
| #8480 | Katya and the Broken KeyboardVKOSHP 2023 | |
| #8481 | Cooperative game on a treeVKOSHP 2023 | |
| #8482 | Driving License ExamVKOSHP 2023 | |
| #8483 | Count the Christmas TreesVKOSHP 2023 | |
| #8484 | Not Everything Is So AmbiguousVKOSHP 2023Interactive | |
| #8485 | Magic SquareVKOSHP 2023 | |
| #8486 | CasinoVKOSHP 2023 | |
| #8487 | Scooter numbersVKOSHP 2023 | |
| #8488 | SquaresVKOSHP 2023 | |
| #8489 | Streets of FlatlandVKOSHP 2023 | |
| #8490 | Guess the StringVKOSHP 2023Interactive | |
| #8491 | a, ab, ba stringsVKOSHP 2023 | |
| #8492 | Three SuitcasesVKOSHP 2023 | |
| #8495 | ТигрыROI 2017 Day 1Interactive | |