According to the most comprehensive reference ever written on bowlines, the EBSB bowline (which is a variation of another variation, called the EBDB bowline, together with a sort of Yosemite finish) is probably the safest easily undone tie-in knot for climbing. It looks like this:
Now that's what I call a big picture.
I can modify my EBDB bowline until it looks exactly like this knot. I'm pretty sure it's the very same, but I want to be over-sure. I can't find a reference that teaches to tie this knot step by step anywhere. Can someone help?