"Puzzle" is a song by South Korean pop rock band CNBLUE. It was released on May 11, 2016, as their 10th single under Warner Music Japan and 13th single overall in Japan. The song was written by lead vocalist Jung Yong-hwa. Revolving around the theme of a wedding, "Puzzle" deals with the idea of "eternal love".

The single was released in four editions: Regular Edition, Limited Editions A and B, and a fan club-only Boice Limited Edition. "Puzzle" debuted on the weekly Oricon Singles Chart at number four and has sold over 30,000 copies since its release. The band embarked on the CNBLUE Spring Live 2016 "We're Like a Puzzle" arena tour, where they held four concerts in Aichi, Tokyo, and Osaka.

Due to the band's fifth anniversary since its major-label debut in Japan, Jung took interest in composing a song about marriage. With the idea of making a "flashy" lead single, he decided to write a "catchy" track. In crafting the song, Jung sought to create "pop melodies and lyrics with a story, but also linked to the visual, such as a CD jacket and music video".

"Puzzle" was announced as CNBLUE's 10th single on March 6, 2016, with a release date of 11 May. It serves as commemoration for the band's major-label debut five years prior.

"Puzzle" was written by vocalist Jung Yong-hwa, and Japanese-language translations were provided by Hasegawa. The song was composed by Jung, Han Seung-hoon, and Ko Jin-yeong; it was arranged by the latter two. Described as a "bright" alternative rock and synthpop track, it is the band's first wedding-themed song; the lyrics revolves around "eternal love". He described the arrangement of the song as being "60% upper band sound and 40% dance music".

The single was accompanied by two coupling tracks. "Take Me Higher" was written by Jung and Takashi Ogawa. Likewise, the song was composed by Jung, Han, and Ko; it was arranged by Shogo Ohnishi. Lyrically, the songs conveys the band's sentiment of exceeding its potential. "Be My Lover" was written by Lee Jong-hyun, who also composed the track alongside Kim Jae-yang and Park Hyun-woo; it was arranged by the latter two. Additional guitars were provided by Lee Tae-wook and Park, and additional bass provided by Ko. In order to express its "poetic sentiment", the song is sung entirely in English to capture the "emotions, feelings, and delicate nuances" of the lyrics. All three songs were recorded in Seoul at the FNC Entertainment Studio.

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