This study raises the issue of Decision Number 44/Pid.B/2014/PN.Srp and Decision 349/Pid.B/2023/PN.Smn related to the judge's ratio decidendi in both cases so that it can find things that differentiate why the verdicts can be different. This writing uses the normative juridical legal method. The findings of the study found that based on Article 340 of the Criminal Code, the perpetrator of premeditated murder will be threatened with the most severe sanction, namely the death penalty. The elements of premeditated murder have three conditions. First, there is intent accompanied by prior planning. Second, there is sufficient time for a person to think from the emergence of the will to the implementation of the will. Third, the act is carried out in a calm state. This study aims to determine the judge's ratio decidendi in imposing criminal sanctions on perpetrators of premeditated murder in the study of Decision 44/Pid.B/2014/PN.Srp and Decision 349/Pid.B/2023/PN.Smn.

Buku

Muhaimin, Metode Penelitian Hukum, Mataram: Mataram University Press, 2020.

Rifa’i, Iman Jalaludin dkk, Metode Penelitian Hukum, Serang: PT Sada Kurnia Pustaka, 2023.

Widiarty, Wiwik Sri, Buku Ajar Metode Penelitian Hukum, Yogyakarta: Publika Global Media, 2024.

Peraturan Perundangan

Undang-undang Nomor 1 Tahun 1946 tentang Peraturan tentang Hukum Pidana. (Lembaran Negara Republik Indonesia Tahun 1958 Nomor 127).

Undang-undang Nomor 8 Tahun 1981 tentang Kitab Undang-undang Hukum Acara Pidana (KUHAP). (Tambahan Lembaran Negara Republik Indonesia Tahun 1981 Nomor 3209).

Undang-undang Nomor 48 tahun 2009 tentang Kekuasaan Kehakiman. (Tambahan Lembaran Negara Republik Indonesia Nomor 5076).

Putusan Pengadilan

Putusan Pengadilan Negeri Semarapura Nomor 44/Pid.B/2014/PN.Srp

Putusan Pengadilan Negeri Sleman Nomor 349/Pid.B/2023/PN.Smn

Jurnal

Fadhilah, Nisa & Kamilatun, “Analisis Pertimbangan Hakim dalam Menjatuhkan Putusan Terhadap Pelaku Tindak Pidana Menghilangkan Nyawa Orang Lain”, Jurnal Hukum Legalita Vol. 1 No. 2, 2021, https://doi.org/10.47637/legalita.v3i2.437.

Karisa, Immaculata A “Analisis Pertimbangan Hakim dalam Penjatuhan Pidana terhadap Tindak Pidana Pencabulan oleh Anak (Studi Kasus Putusan Pengadilan Negeri Klaten Nomor: 35/Pid.Sus.Anak/2014.PN.Kln)”, Jurnal Verstek, Vol. 8 No. 1, 2020, https://doi.org/10.20961/jv.v8i1.39623.

Skripis

Emilia Ilmi, Ratio Decidendi Penetapan Dispensasi Kawin dengan Alasan Menjauhi Zina Perspektif Tujuan Perkawinan di Indonesia (Studi Kasus Penetapan Nomor: 2041/Pdt.P/2020/PA. Kab.Malang). Skripsi, Program Sarjana Universitas Muhammadiyah Malang, Malang, 2023.

Yana Afian, Fenomena Mutilasi dalam Tindak Pidana Pembunuhan Sebagai Upaya Penghilangan Alat Bukti. Skripsi, Program Sarjana Universitas Ngudi Waluyo, Semarang, 2024.

Website

https://bali.antaranews.com/berita/66633/fikri-pelaku-mutilasi-dihukum-seumur-hidup, diakses pada 31 Mei 2025.

https://www.detik.com/jogja/berita/d-7111162/sadisnya-heru-mutilasi-ayu-di-wisma-jakal-sleman-karena-jeratan-pinjol, diakses pada 31 Mei 2025.