The 2012 Cotsen Open/AGA-Tygem Pro Qualifier was held April 28-29 in Los Angeles, CA. One of the major tournaments on the American Go Association’s annual calendar, the event is sponsored by Eric Cotsen and this year 
major organizational support was provided by Myung-wan Kim 9P and Andy Okun; Chris Sira was the Tournament Director. Cho Hunhyun 9P topped an impressive list of professional go players in attendance, and top boards were broadcast by the American Go E-Journal (see “In Appreciation” below for complete credits).
Reports:
Calvin Sun Wins ’12 Cotsen
2012 Cotsen Open Crosstab (includes top-board game records; see below for commentaries)
Pro System Launch “Monumental Moment” for U.S. Go, says Cho Hunhyun 9P
Cotsen Open Day 1
In Appreciation: The 2012 Cotsen Open Team
Two Kims Add to Cotsen Pro Line-Up
Cotsen Drawing Record Crowd in L.A.
Cotsen Open Set for this Weekend in L.A.
Cho Hun-Hyun 9P ‘s Message to American Go Players
Cotsen Open Registration Nearing Triple Digits
KBA to Award Certificates to Dan Players at Cotsen
Cotsen Open to Feature Legendary Cho Hun-hyun 9P & Other Top Pros
Game Commentaries (downloadable sgf files)
Exhibition: Cho Hun-hyun 9P vs. Yilun Yang 7P Commentary by Yoo Chang-hyuk 9P
Round 1 Board 1 Commentary by Kim Myung-wan 9P
Round 1 Board 2 Commentary by Kim Myung-wan 9P
Round 2 Board 1 Commentary by Yilun Yang 7P
Round 4 Board 1 Commentary by Yilun Yang 7P
Round 5 Board 1 Commentary by Kim Myung-wan 9P and Janice Kim 3P
photos by Chris Garlock
