ParkyDR has released v0.5 of Chess2X. This is a useful update, which contains the following improvements and fixes, as described by the author.
1) Tighten up promote check
2) Auto repeat for joystick, L/R and volume
3) Get rid of 2 pixel gap on right of screen
4) Combine move and in game menus
5) Provide feedback on volume change
I originally rated Chess2X as 6/10 because of something of a lack of polish. This update makes enough of a difference that I am now bumping its score up to 7/10.