planets stars sizes
41 light years
43 light years
45 light years
47 light years
49 light years
51 light years
53 light years
243,000 mi.
281,000 mi.
295,000 mi.
310,000 mi.
540,000 mi.
650,000 mi.
714,000 mi.
BDF 198
EX 53
HV 491
MKP 427
PLC 120
VJD 913
ZQ 75


       Hint        Start Over

Get hints for a different puzzle!

How to Get Hints

A copy of your puzzle's grid is shown on the left. Copy over your current grid state from the book into the grid on the left by clicking once in a square to make an 'X' or twice to make an 'O'. Once you have your current grid state represented here, you can click the 'Hint' button below the grid. This will (1) remove any errors in your current grid state and (2) offer a suggestion as to where the next logical deduction can be made. You can request unlimited hints.

Puzzle #100

This grid will auto-populate with all the true relationships you've created on the top 7 rows on the grid.


Distances Planets Stars Sizes
41 light years
43 light years
45 light years
47 light years
49 light years
51 light years
53 light years