Games Between Two Players
Choi Cheolhan (2 win; 3 loss) vs. On Sojin
| Game Date and Game Description | |||||
| Black | White | Result | Replay | Download | |
 [2020-04-22] 25th LG Cup, Korean preliminary
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| On Sojin 8p | Choi Cheolhan 9p | B+1.5 |  |
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| [2011-11-07] 30th Korean KBS Cup, loser section round 1
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| Choi Cheolhan 9p | On Sojin 6p | B+R | |
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| [2008-10-26] Year 2008 Korean League
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| On Sojin 4p | Choi Cheolhan 9p | W+R | |
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| [2007-06-27] 12th Korean GS Caltex Cup, league
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| On Sojin 4p | Choi Cheolhan 9p | B+R | |
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| [2006-07-13] Year 2006 Korean League
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| On Sojin 3p | Choi Cheolhan 9p | B+R | |
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