John William Sandino del Busto

Team Leader of Colombia

Problems graded	Report grade	Opposition grade	Review grade
13. Chaotic Magnetic Pendulum	5 (Slovenia)	8 (France)	7 (Croatia)
16. The Midnight Special	5 (Italy)	6 (Colombia)	6 (Sweden)
6. Flat Earth	5 (Colombia)	5 (Sweden)	6 (Italy)
9. Electrostatic lighter	4 (Sweden)	7 (Italy)	6 (Colombia)
4. Filled ball	7 (France)	5 (Croatia)	4 (Slovenia)
2. Airbounce	6 (Croatia)	8 (Slovenia)	7 (France)
5. Sparkler	5 (Sweden)	7 (Germany)	7 (Croatia)
11. Smashing Spheres	6 (Germany)	7 (Croatia)	6 (Sweden)
10. Droplet sandy fingerprints	6 (Croatia)	9 (Sweden)	9 (Germany)
4. Filled ball	7 (Colombia)	8 (Netherlands)	6 (Romania)
2. Airbounce	8 (Netherlands)	9 (Romania)	8 (Colombia)
1. Physics of math	8 (Romania)	6 (Colombia)	6 (Netherlands)
15. Galileo method	6 (Ukraine)	8 (France)	9 (Germany)
8. Ferrofluidic patterns	9 (France)	9 (Germany)	7 (Ukraine)
1. Physics of math	6 (Germany)	5 (Ukraine)	8 (France)
17. Resistor thermodynamics	8 (Switzerland)	8 (Brazil)	9 (France)
1. Physics of math	8 (Brazil)	8 (France)	10 (Switzerland)
10. Droplet sandy fingerprints	8 (France)	8 (Switzerland)	7 (Brazil)