ACF Winter

ACF Winter is a medium-difficulty tournament produced by ACF and held in November. ACF Winter is a packet submission tournament.

History

The original iterations of ACF Winter were held in January 2009 and 2010. Intended to be intermediate in difficulty between ACF Fall and ACF Regionals, both tournaments were generally regarded as regular difficulty after the fact.

The first iteration, 2009 ACF Winter, was edited by Jerry Vinokurov with Dennis Jang and Trygve Meade. The second iteration was edited by Andrew Hart, Rob Carson, Dennis Jang, Trevor Davis, and Eric Mukherjee.

In 2020, ACF announced that a revived version of ACF Winter would take place on November 21, 2020. The tournament was head-edited by William Golden and Andrew Wang. The 2021 tournament was head-edited by Tim Morrison.

List of ACF Winter tournaments

Year	Announcement	Editors	Packets
2009	link	Jerry Vinokurov, with Dennis Jang and Trygve Meade	Packets
2010	link	Andrew Hart, with Rob Carson, Trevor Davis, Dennis Jang, and Eric Mukherjee	Packets
2020	link	William Golden, with Ganon Evans, Nick Jensen, Vishwa Shanmugam, Bryanna Shao, Chris Sims, Jaskaran Singh, Andrew Wang, and Chandler West + Andrew Wang for science oversight	Packets
2021	link	Tim Morrison, with Ethan Ashbrook, Vikshar Athreya, Nick Jensen, Joseph Krol, Angela Lin, Steven Liu, Benjamin McAvoy-Bickford, Eric Mukherjee, and Chris Sims	Packets
2022	link	Joseph Krol, with Eric Mukherjee, Justin Zhang, Henry Goff, Eve Fleisig, Athena Kern, Ani Perumalla, Hari Parameswaran, Govind Prabhakar, Ethan Ashbrook, and Nick Jensen	Packets
2023	link	Ethan Ashbrook, with Rachel Ezrielev, Raymond Chen, Chandler West, Amogh Kulkarni, Allan Lee, Sharath Narayan, Maxwell Ye, Michal Gerasimiuk, Guy Indorante, Jacob Egol, Eric Mukherjee, Joel Miles and Evan Knox	Packets
2024	link	Chris Sims, with Anuttam Ranji, Rachel Ezrielev, Richard Niu, Raymond Chen, Vikshar Athreya, Jonathan Tran, Sky Li, Ben Chapman, Eric Gunter, Henry Atkins and Joseph Chambers	Packets
2025	link	Rachel Ezrielev, with Emily Bussa, Sinecio Morales, James Wang, Walter Zhang, Brendan Bethlehem, Aiden Dartley, Jacky Xu, Jamie Burchett, Vivek Sasse, Frances Hadley, Steven Yuan, Linus Luu, and Dan Ni

ACF tournaments
ACF Fall											2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025
ACF Winter																			2009	2010										2020	2021	2022	2023	2024	2025
ACF Regionals	1991	1992	1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019	2020	2021	2022	2023	2024	2025	2026
ACF Nationals	1991		1993	1994	1995	1996	1997	1998	1999	2000	2001	2002	2003	2004	2005	2006	2007	2008	2009	2010	2011	2012	2013	2014	2015	2016	2017	2018	2019		2021	2022	2023	2024	2025	2026