Since the G-zone is located on the front wall of the vagina, the choice of position has a direct impact on how easily the desired angle can be achieved during penetration.
Bear position (from behind, on all fours) In this position, penetration by your partner naturally puts more direct pressure on the front wall of the vagina — sexologists often cite this position as one of the most effective for G-spot stimulation.
Woman on top, leaning back Here, the woman can control the angle and depth herself — by leaning back slightly, the trajectory of penetration goes straight to the front wall.
"Reclining Butterfly" (on your back, hips on a pillow) Placing a pillow under your hips lifts your pelvis slightly, which also makes it easier to reach the anterior wall during penetrative sex.
Manual Alternative If partnered positions don't provide enough, manual stimulation (alone or with penetration) remains the most precise method of control — since the finger independently controls the angle and force of pressure.