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Achi

This game for two players comes from Ghana. However, stones that were marked for this game in the third century AD have been found near Hadrian's Wall in Northern England.

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Yih or Luk Tsut K'i or Three Men's Morris

Some puzzles requiring no knowledge of knot theory, just a careful inspection of the patterns. A glimpse of the classification of knots and a little about prime knots, crossing numbers and knot arithmetic.

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Two Stones

This game is known as Pong hau k'i in China and Ou-moul-ko-no in Korea. Find a friend to play or try the interactive version online.

Mathematical Anagrams

Stage: 5 Challenge Level: Challenge Level:1
  1. LATE GRIN (2 solutions)
  2. ELSIE COSS
  3. MR O'BUSH
  4. ANN G POET
  5. MARGE R LAPOLLA
  6. N C LEASE
  7. QUI ATONE
  8. ELEGANT RC
  9. THE YEN SOUP
  10. HER PAL BOY
  11. TOR CAR PORT
  12. LEE SLIP
  13. OBESE RAN SPIN
  14. FIN COUNT
  15. PEN LONE TAXI
  16. INCOME TRAIT
  17. TED IS QUAINT
  18. QUAIL RANG EU
  19. IT DARED SAT ON DIVAN
  20. SIR VOID
  21. PRAM TEASER
  22. A QUIT CARD
  23. POLY TOGO
  24. PI MAZE RUT
  25. ROLL PAGE ALARM
  26. LA QUAIL TRADER
  27. O CHOSEN RAID
  28. LATIN ZOO HR
  29. GO RASH TIM
  30. OATS IN DÉCOR
  31. OMAN FROST TRAIN
  32. RAIN IN VAT
  33. GARETH MARY TOE SHOP
  34. CORNI FLEET
  35. QUINCE FACE ICE SNOB
  36. DUNE LUMP
  37. CAR OF TIN
  38. BUMPER MINER
  39. COTE RIBS
  40. PIN LATE OXEN
  41. MR MARTY ALE STILEBY
  42. NOT IN A TIGER
  43. LATENT GAIN
  44. I LIP BRAT BOY
  45. NERD TAN TIME
  46. NO SATELLITES
  47. HARD TOE RENT
  48. SCAN ILL AGE TRAPS
  49. MR A I GHOST
  50. DR H ONE-COAT