Unseeded Dane Kristian Frost Olesen maintained his impressive run in the inaugural Pilatus Cup when he moved into the semi-finals PSA World Tour Challenger 10 squash event at Sportpark Pilatus in the Swiss town of Kriens.

After removing third seed Gilly Lane in a marathon first round battle, Olesen defeated fellow non-seed Lewis Walters, of England, 11-3, 11-6, 11-8 to become the only unseeded player in the last four.

The 22-year-old from Odense will now face another Englishman Chris Simpson for a place in the final.  Top seed Simpson defeated Australian Steve Finitsis 11-5, 11-7, 2-11, 11-7.

"I'm very happy ... reaching the semis is very pleasing," said Olesen.  "Lewis played well today, but I managed to get in front of him, which made the difference. I'm looking forward to tomorrow where I'm playing Simpson!"

The other men's semi-final features Frenchman Julien Balbo and Italian Stephane Galifi.  Fourth seed Balbo beat Danish qualifier Rasmus Nielsen 11-9, 11-5, 12-10, while France-based second seed Galifi needed four games to overcome German qualifier Andre Haschker 9-11, 11-3, 13-11, 11-5.

There were no surprises in the first round of the women's WISPA World Tour 4 event in which Swiss interest is led by top seed Gaby Huber, the former Gaby Schmohl who has a bye into the last eight.

France's Coline Aumard denied local favourite Agapi Kazamia a place in her first WISPA Tour quarter-final when the third seed beat 19-year-old from Luzern 11-7, 11-4, 11-5.

RESULTS:    Pilatus Squash Cup, Kriens, Switzerland

Men's quarter-finals:
[1] Chris Simpson (ENG) bt Steve Finitsis (AUS) 11-5, 11-7, 2-11, 11-7
Kristian Frost Olesen (DEN) bt Lewis Walters (ENG) 11-3, 11-6, 11-8
[4] Julien Balbo (FRA) bt [Q] Rasmus Nielsen (DEN) 11-9, 11-5, 12-10
[2] Stephane Galifi (ITA) bt [Q] Andre Haschker (GER) 9-11, 11-3, 13-11, 11-5

Women's 1st round:
[1] Gaby Huber (SUI) bye
[8] Cyrielle Peltier (FRA) bt Belen Etchechoury (ARG) 9-11, 11-5, 11-8, 11-3
[3] Coline Aumard (FRA) bt Agapi Kazamia (SUI) 11-7, 11-4, 11-5
[7] Carrie Ramsey (ENG) bt Chloe Mesic (FRA) 9-11, 11-7, 11-4, 11-1
[5] Maud Duplomb (FRA) bt Bine Malund Lind (DEN) 11-9, 11-6, 11-5
[4] Lauren Briggs (ENG) bt Julia Lecoq (FRA) 11-6, 11-5, 11-3
[6] Celia Allamargot (FRA) bt Melissa Meulenbelt (NED) 11-4, 11-13, 11-8, 11-3
[2] Olga Ertlova (CZE) bt Victoria Bell (ENG) 11-6, 11-8, 11-3

Men's semi-final line-up:
[1] Chris Simpson (ENG) v Kristian Frost Olesen (DEN)
[2] Stephane Galifi (ITA) v [4] Julien Balbo (FRA)

Women's quarter-final line-up:
[1] Gaby Huber (SUI) v [8] Cyrielle Peltier (FRA)
[3] Coline Aumard (FRA) v [7] Carrie Ramsey (ENG)
[4] Lauren Briggs (ENG) v [5] Maud Duplomb (FRA)
[2] Olga Ertlova (CZE) v [6] Celia Allamargot (FRA)