These first 2 links will give you a different set of testers each time you refresh their pages:

Random IQ Test (10 puzzles at once)

Random IQ Tester (1 puzzle at a time)


These next 3 links will also give you different testers when you refresh their pages, but of only the specified difficulty levels:

Easy Random IQ Tester (easy puzzles only)

Medium Random IQ Tester (medium puzzles only)

Hard Random IQ Tester (hard puzzles only)

Below are 125 pre-specified tester puzzles. However, there are over 300 testers altogether. Those not found below can be found through the "random" links above.

IQ Tester #125 (easy)

IQ Tester #124 (easy)

IQ Tester #123 (easy)

IQ Tester #122 (easy)

IQ Tester #121 (medium)

IQ Tester #120 (easy)

IQ Tester #119 (medium)

IQ Tester #118 (medium)

IQ Tester #117 (medium)

IQ Tester #116 (medium)

IQ Tester #115 (easy)

IQ Tester #114 (easy)

IQ Tester #113 (medium)

IQ Tester #112 (medium)

IQ Tester #111 (easy)

IQ Tester #110 (medium)

IQ Tester #109 (hard)

IQ Tester #108 (medium)

IQ Tester #107 (easy)

IQ Tester #106 (medium)

IQ Tester #105 (medium)

IQ Tester #104 (easy)

IQ Tester #103 (easy)

IQ Tester #102 (hard)

IQ Tester #101 (easy)

IQ Tester #100 (medium)

IQ Tester #99 (easy)

IQ Tester #98 (medium)

IQ Tester #97 (easy)

IQ Tester #96 (hard)

IQ Tester #95 (easy)

IQ Tester #94 (easy)

IQ Tester #93 (easy)

IQ Tester #92 (medium)

IQ Tester #91 (medium)

IQ Tester #90 (easy)

IQ Tester #89 (medium)

IQ Tester #88 (easy)

IQ Tester #87 (medium)

IQ Tester #86 (medium)

IQ Tester #85 (hard)

IQ Tester #84 (easy)

IQ Tester #83 (medium)

IQ Tester #82 (easy)

IQ Tester #81 (easy)

IQ Tester #80 (medium)

IQ Tester #79 (easy)

IQ Tester #78 (medium)

IQ Tester #77 (medium)

IQ Tester #76 (medium)

IQ Tester #75 (medium)

IQ Tester #74 (medium)

IQ Tester #73 (medium)

IQ Tester #72 (medium)

IQ Tester #71 (easy)

IQ Tester #70 (medium)

IQ Tester #69 (medium)

IQ Tester #68 (easy)

IQ Tester #67 (medium)

IQ Tester #66 (medium)

IQ Tester #65 (medium)

IQ Tester #64 (easy)

IQ Tester #63 (easy)

IQ Tester #62 (easy)

IQ Tester #61 (easy)

IQ Tester #60 (medium)

IQ Tester #59 (easy)

IQ Tester #58 (easy)

IQ Tester #57 (medium)

IQ Tester #56 (hard)

IQ Tester #55 (medium)

IQ Tester #54 (hard)

IQ Tester #53 (medium)

IQ Tester #52 (hard)

IQ Tester #51 (medium)

IQ Tester #50 (hard)

IQ Tester #49 (hard)

IQ Tester #48 (medium)

IQ Tester #47 (medium)

IQ Tester #46 (medium)

IQ Tester #45 (easy)

IQ Tester #44 (easy)

IQ Tester #43 (easy)

IQ Tester #42 (easy)

IQ Tester #41 (medium)

IQ Tester #40 (hard)

IQ Tester #39 (easy)

IQ Tester #38 (medium)

IQ Tester #37 (medium)

IQ Tester #36 (medium)

IQ Tester #35 (easy)

IQ Tester #34 (medium)

IQ Tester #33 (easy)

IQ Tester #32 (hard)

IQ Tester #31 (medium)

IQ Tester #30 (easy)

IQ Tester #29 (hard)

IQ Tester #28 (hard)

IQ Tester #27 (medium)

IQ Tester #26 (hard)

IQ Tester #25 (easy)

IQ Tester #24 (medium)

IQ Tester #23 (easy)

IQ Tester #22 (easy)

IQ Tester #21 (hard)

IQ Tester #20 (medium)

IQ Tester #19 (easy)

IQ Tester #18 (medium)

IQ Tester #17 (hard)

IQ Tester #16 (easy)

IQ Tester #15 (easy)

IQ Tester #14 (hard)

IQ Tester #13 (hard)

IQ Tester #12 (easy)

IQ Tester #11 (easy)

IQ Tester #10 (hard)

IQ Tester #9 (hard)

IQ Tester #8 (medium)

IQ Tester #7 (medium)

IQ Tester #6 (medium)

IQ Tester #5 (medium)

IQ Tester #4 (medium)

IQ Tester #3 (easy)

IQ Tester #2 (hard)

IQ Tester #1 (medium)