combination
Ko-soto-gari into Tani-otoshi
Lifting a foot clear of the minor outer reap moves your partner's weight backwards over a leg they cannot step back with. Tani-otoshi puts a barrier exactly there.
No demonstration linked yet, and this is one of the places footage helps most. Know a good one? Suggest a video.
Step by step
The whole sequence in words. Described in the standard right-handed form.
- Take your right grips and reap the outside of their right heel with the sole of your left foot.
- Feel them lift the foot clear and settle their weight back.
- Keep the sleeve and step your left foot across to the outside of their right foot.
- Turn to face the same way as them and extend your left leg behind both of their legs, low and straight.
- Sit down close beside them, driving your shoulders back over the extended leg.
- They fall backwards over your leg; keep the sleeve so they land on their side rather than flat.
Receiving it
Lifting your foot clear of the reap saves the sweep and costs you your balance: your weight is behind you and the foot you would step back with is still in the air. Their leg then arrives behind both of yours and there is nothing left to step onto. Do not reach backwards with a straight arm. Chin on your chest, slap with your free arm, and let the held sleeve turn you slightly onto your side as you land.
VI judo notes
Their foot lifting off the mat is felt directly through your sweeping foot, and that is the cue to change from a sweep to a barrier. Step across in contact, hip to hip, rather than letting go and finding the position again. Both of you finish on the mat, so agree the working direction first and know where the edge is.
Each technique's own page carries its own full narration and key points; follow the links above.