New Zealand remain on course to defend their world titles in the men's and women's events at the Rugby World Cup Sevens in South Africa after progressing to the semi-finals.
New Zealand faced a threat to their long RWC Sevens winning run against Argentina, but they managed to come out 12-5 winners in the quarterfinals from a tense battle and stretch that streak to 12 games.
German Schulz profited from a super Matias Osadczuk offload to go over in the corner for the Pumas, but Scott Curry struck back for the All Blacks before half-time.
It was far from a perfect performance from the Kiwis, but the match was lit up by a moment of brilliance when Moses Leo burst through a tackle to sprint half the pitch and dive over the try line.
There was a moment of concern when the referee had to be replaced after taking a knock in an accidental collision, and Argentina were banging on the door late on but couldn't take advantage as they knocked on with the final play.
The All Blacks Sevens will meet Ireland in the semi-finals on Sunday night after the Irish upset the home side in their quarterfinal.
South Africa's hopes of lifting the trophy on home turf were ended in stunning style when Ireland's men emphatically eliminated the hosts at the Cape Town Stadium.
The Irish were clinical in punishing Blitzboks errors in the final game of the day, with Jordan Conroy putting the cherry on top of a historic performance with two late tries in a 24-14 victory.
It was Ireland's first-ever win against South Africa at a RWC Sevens.
In the women's tournament, the Black Ferns cruised past Ireland 26-0 with the help of the RWC Sevens' all-time top try scorer Portia Woodman to set up a semi-final clash with France.
Niall Williams scored the only try of an error-strewn first half, but the Black Ferns' quality showed after the break when Woodman ran from under her own posts to score her 20th RWC Sevens try, an all-time record.
They completed the job with tries from Alena Saili and Shiray Kaka, overcoming their initial inaccuracies to take a comfortable win.
A last-gasp Joanna Grisez try earned France a thrilling 19-14 win over Fiji in a dramatic and eventful quarterfinal.