research_2025

cx

Challenge

In Spring 2025, it appears that a special flight was carried out to commemorate the 100th anniversary of the airport that once existed in Hong Kong.
Answer the name of the flight number.
If the flight was JL2026, the flag should be SWIMMER{JL2026}.

Solution

搜索 2025 special flight 100th anniversary of the airport Hong Kong HK

找到视频 🇭🇰 國泰航空紀念啟德機場100週年航班 CX8100 Special Flight for the 100th Anniversary of Kai Tak Airport

FLAG

1

SWIMMER{CX8100}

pilot

Challenge

In the flight indicated in the cx challenge, answer the name of the person who was sitting in the seat shown in the attached image in English.
(Note that the attached image is for indicating the seat and is not an actual photo of the flight.)
For example, if the person’s name is John Doe, the flag should be SWIMMER{John Doe}.

Solution

在国泰航空的官方账号找到视频 Behind the scenes of CX8100: A Cathay Flypast to Remember 揭開幕後：國泰特別航班CX8100

在 2:03 找到副机长

在 1:35 找到副机长的名字 Adrian Scott

FLAG

1

SWIMMER{Adrian Scott}

flag_on_the_don

Challenge

On August 28th 2025, an event using “Taiko no Tatsujin” (太鼓の達人) was held in Gunma Prefecture.
What is the building where the venue was held? Please answer with the way number of OpenStreetMap .
For example, if the building’s way number is 123456789, the Flag should be SWIMMER{123456789}.

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In the PC version of Google Maps, you can right-click to get coordinates (latitude and longitude).

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In many map sites, you can jump to a location by directly entering latitude and longitude in the search box.

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Buildings are categorized as "features" in OpenStreetMap.

Solution

搜索 2025年8月28日 群馬県 太鼓の達人 找到 高齢者向けｅスポーツ大会開催　群馬県渋川市〔地域〕：時事ドットコム

这则新闻的内容与题目描述高度吻合

发现群马县涩川市于 2025 年 8 月 28 日举办了面向老年人的电子竞技大会，接着搜索 高齢者 ｅスポーツ 群馬県渋川市

找到这篇报告 68db818b4fc61.pdf

在第 32 页找到对这件事的描述，得知这件事发生在 渋川市民会館

最后接着在 OSM 搜索即可 路径：‪渋川市民会館‬ (‪628293186‬) | OpenStreetMap

FLAG

1

SWIMMER{628293186}

obsolete

Challenge

In November 2025, relations between Japan and China worsened over a potential contingency in Taiwan (referred as “台湾有事”).
During this argument, the Chinese Embassy in Japan posted on social media about the “Enemy Clauses (敵国条項)” of the UN Charter.
Japan’s Ministry of Foreign Affairs reportedly countered that the clause had become obsolete due to a 1995 UN resolution.

In that resolution, several countries abstained from the vote. Answer which countries they were.
Use the country names as written in the official record of the resolution, separated by underscores _ (any order), for the flag.

For example, if the record listed UNITED STATES and RUSSIAN FEDERATION, the flag would be SWIMMER{UNITED STATES_RUSSIAN FEDERATION}.

Solution

General Assembly official records, 50th session :

FLAG

1

SWIMMER{Cuba_Democratic People’s Republic of Korea_Libyan Arab Jamahiriya}

lattice_tower

Challenge

In December 2025, an earthquake struck Japan and damaged the lattice tower of a communications facility.
In addition to the name reported in the major news articles, the building appears to have another official name as a communications facility.

Please answer that official name in Japanese.
If the answer contains letters or numbers, keep them as they are, but use ASCII alphanumerics.

Do not include the company that owns the building; only the building name should be in the flag.
For example, if the building were called “SWIMMER OSINT CTF株式会社　台場SWIMMER2026ビル” the flag would be SWIMMER{台場SWIMMER2026ビル}.

Solution

直接搜索题目描述找到新闻 Quake-damaged tower forces evacuations in Hachinohe | The Asahi Shimbun: Breaking News, Japan News and Analysis

找到这座塔是青森县八户市日本电信电话公司大楼铁塔

ぷらぷら電話局めぐり : NTT東日本 八戸支店 (八戸NW3棟局)

FLAG

1

SWIMMER{八戸NW3棟局}

paint

Challenge

The aircraft in the attached image features a special livery themed after a movie.
This livery entered service on March 21, 2017, and its retirement was announced in 2025.
The final flight with this livery took place on January 9, 2026 (JST).

Where was this special livery applied back in 2017? Please answer the building’s coordinates on a map.

Solution

这是全日空（ANA）的C-3PO ANA JET（注册号 JA743A），属于《星球大战》主题彩绘机系列

在日本大阪伊丹机场完成喷涂 C-3PO™ ANA JET unveiled @ Tokyo/Haneda airport | ANA STAR WARS™ PROJECT

FLAG