Cryptic crossword, Issue 17

Can you solve it?

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Cryptic #5, set by Logisca: Download as a PDF or read on!

Once the puzzle is completed, 13 of the navy dots (each with a different number) will be in squares containing the letter E. These dots can be joined with straight lines in order (like a dot-to-dot) with an extra line connecting dot 13 to dot 1 to reveal a topical shape.

Across clues

  • 1. This measures state margin with hesitation. (7)
  • 4. An even weightless weight. (5)
  • 7. Origin’s rooted along diameter which is two of these. (5)
  • 8. Domed shape formed by two union symbols at the entrances—left and right. (7)
  • 9. Infinitely sum integers eg rank. (9)
  • 11. Here Rory regularly counts. (1,1,1)
  • 12. That is a slow browser. (1,1)
  • 13. One in France can make things negative. (2)
  • 14. A Chalkdust puzzle editor, whichever way you look at it. (1,1)
  • 15. 3 on page 61, and 1 on your computer. (7)
  • 17. Euler’s numbers and letters. (2)
  • 18. Hesitation to invert friction. (2)
  • 19. Logo making leads to time and money. (1,1)
  • 20. Hill tops between eagles’ nests. (3)
  • 21. Legion without Dracula? (9)
  • 23. Aside from function by bottomless toilets? (7)
  • 24. A mathematician on the radio of a tanker. (5)
  • 25. Instrument for measuring part of some terabytes. (5)
  • 26. German uses roughly 17 estimates. (7)

Down clues

  • 1. Blimey soldier. It’s a dog! (5)
  • 2. With time, yield produces a black stone. (6)
  • 3. A single hyperbolic paraboloid? (7)
  • 4. Evacuate ancient Eastern politician by final Orient Express launch. (5)
  • 5. A long litre fermented is only worth about 80% as much in the US. (6)
  • 6. Forces hard into dependencies. (7)
  • 8. Spooner’s nerd only read aloud a maths magazine. (9)
  • 10. And I’m game! (3)
  • 13. 14 down but not down. (2)
  • 14. Test a vehicle—reversing’s a charm! (7)
  • 15. 500 + 1000 = a unit? (2)
  • 16. Result samples devout comedy. (7)
  • 17. Might Maryam Mirzakhani start with these? (3)
  • 18. Disentangle a circle. (6)
  • 19. Least complex system’s beginning expressed in SI units. (6)
  • 21. 100—real, complex, positive. (5)
  • 22. For example, $\sqrt{2}+\sqrt{3}=\text{irrational} – \operatorname{ab\,s}$ (5)

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