Competitions:

1. Prize of the Beheaded Man by Paul Cooijmans: http://iq-tests-for-the-high-range.com/prize_behead.html

2. World I.Q. Challenge by Brennan Martin: http://www.worldiqchallenge.com/

3. Aha! Puzzles Wizard Challenge by Lloyd King: http://www.ahapuzzles.com/contest.htm

Recommended tests:

1. High IQ Tests by Domagoj Kutle: https://highiqtests.com/

2. Three Sonnets by Heinrich Siemens: http://tweeback.com/hriq/Three-Sonnets.pdf

3. MFRA by Theodosis Prousalis: https://hriqtests.com/mfra/

4. Mathodica 22 by Mislav Predavec: http://news.generiq.net/Mathodica22/mathodica22.html

5. Verecenthon by Ivan Ivec: http://ivec.ultimaiq.net/vercent.htm

6. Labyrinthine LIMIT by Paul Cooijmans: http://iq-tests-for-the-high-range.com/labyrinthine_limit.html

7. LDA-SWaN by Gianluigi Lombardi: https://ldaswantest.wixsite.com/iqtest/

8. Challenger by Zoran Bijač: https://globeiq.net/challenger-2/

9. Human Intelligence Test by Brennan Martin: http://www.worldiqchallenge.com/humint.html

10. AGLT by Andre Gangvik: https://docs.wixstatic.com/ugd/50d047_c1b0f3a5ab6f4effb5442501bcfd69e4.pdf

11. VORTEX by Miroslav Radojević: https://iqexams.net/VORTEX/VORTEX_F_NUMLETT.pdf

12. TetrastIQ Light by Gabriel Garofalo: https://tetrastiqlight.weebly.com/

13. SEE 30 by Theodosis Prousalis: https://hriqtests.com/isrc-2018/

14. DOT&LINE&PLANE by Tianxi Yu: http://www.chinahighiq.com/col.jsp?id=134

15. Death Figures by Tianxi Yu: http://www.chinahighiq.com/col.jsp?id=139

Practice tests:

1. IQ Test Prep: https://iqtestprep.com/

2. Wechsler IQ Test: https://wechsleriqtest.com/