To celebrate Women’s History Month and Pi Day, here’s a raffle puzzle contest. Feel free to use search engines to help! (The deadline for entry has passed and a winner announced. Thank you for participating! If you’re a teacher, feel free to give this to your students.)

To enter the raffle, follow these steps: First, solve the crossword puzzle. After you’ve completed the grid, treat O’s as zeros and I’s as ones and write out these bits in order from left to right and top to bottom. Convert the resulting binary number into a 10 digit hexadecimal number. Send this number to: girlsanglepuzzler “at” gmail.com. Include your contact information in the body of the message. We will randomly draw from the correct answers received by midnight on March 31, 2012 to select a “winner” and send the winner a small prize (probably involving chocolate).

For a print friendly version, click here.

1. Qualifier for the USAMO

5. Letters for a dentist

8. Penultimate Greek letter

11. Use your nose

13. Dough

15. Precedes lace or horn

16. E

17. The content of mathematics

18. Moon

19. 1^{st} at MIT

21. See 19A

23. Transitional rooms on the ISS

24. Multiplicative identity

25.

27. Sagan’s inspirational science show

30. Response to Q

31. Opposite of ENE

33. Throat clearing sound

35. Young newt

36. Take note (abbr.)

37. 1^{st} atPrinceton

39. Calculator maker

40. Game involving stones, life, and capturing races

41. See 37A

45. One half of an em

46. Some problems that boil down to finding roots of derivatives

48. Continuing

50. Summer math program for high school students

51. Base of the natural logarithm

52. Leave

53. Precedes some or suction

54. Denigrates

58. 1^{st} at Harvard

60. See 58A

61. Agnesi’s blu to Germaine

63. Body sans limbs

65. Staffilani’s native land

68. Sometimes precedes angle

69. Hockfield’s institute

70. One who longs?

71. 0 or 1 to a computer

72. Unagi

73. Contracts that forbid telling

Down

1. Common word in comparisons

2. Fast way to communicate

3. Lines that connect the vertices of a triangle to the midpoints of opposite sides

4. Call forth

5. Prefix meaning 12

6. Anonymous Jane

7. Kovalevskaya and Ratner

8. “Call, OK”

9. Half of tolerable

10. That is

12. Where belongs

13. He brought back Rhyme and Reason

14. Enzyme ending

15. Plus and minus

19. Witten’s theory

20. Paradises

22. Word that sometimes follows clean or reading

25. Where a function maps to

26. Location for messages

27. Yielding to

28. Decimal?

29. Undercover operation

32. Sports league

33. Part of a circle

34. “___ ___ Silver”

38. When ideas become clearer

41. Quit

42. Writer of fables

43. When a mathematician proven wrong persists

44. In such a way

47. Something impossible to do to an angle with a compass and straightedge

49. Where “*i*^{2} = *j*^{2} = *k*^{2} = *ijk* = -1” was etched

51. Train

54. Ecosystem

55. Spooky

56. Mathlete summit

57. Allow

59. Alt.

61. “Just a sec”

62. Graduation gift on Maui

64. City in MO

66. Grassy field

67. Typical time it takes to get tenure (abbr.)

Good luck!

(We will not use your contact information for any purpose other than to deliver your prize, should you win. After the winner has been selected, all emails received will be promptly deleted. At the winner’s discretion, we will let you know who won. Anyone who makes more than one submission will be disqualified! Sorry! Also, this offer is only valid in those states in the United States where such things are legal. There is no fee to enter this puzzle contest.)

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