The next main progression point is e4.
Hints for exiting d3 (downwards) in increasing order (rot13):
- Ubj pbhyq lbh trg cnfg gur jnyyf ba gur rqtr bs n gvyr?
- Vg'f abg whfg obkrf naq fgnghrf gung pna or fjnccrq nebhaq...
- Lbh pna fjnc gur cynlre jvgu n oynax gvyr.
- Ubj jbhyq lbh fryrpg gur gvyr gb gur yrsg bs gur fgnghr?
- Jung zbirzrag pnhfrf gur fjnc gb bpphe? Vf gurer n jnl gb snpr qbja juvyr va n gvyr gung vf fryrpgrq?