Twinguin

Answer for 2026-10-13

Spoilers ahead! Every marked field holds a penguin: two in each row, two in each column and two on each floe, and no two of them touch, not even at a corner. Below the grid you will find the reasoning that gets there without guessing.

Step-by-step walkthrough

  1. floe 4 still needs two penguins, and every other free field here touches this one, so the second penguin would have nowhere to stand. Empty (4,8).
  2. floe 5 still needs two penguins, and every other free field here touches this one, so the second penguin would have nowhere to stand. Empty (4,2).
  3. floe 7 still needs two penguins, and every other free field here touches this one, so the second penguin would have nowhere to stand. Empty (8,7).
  4. a penguin here would leave floe 1 with nowhere to put the penguins it still needs. Empty (2,3).
  5. a penguin here would leave floe 5 with nowhere to put the penguins it still needs. Empty (3,2).
  6. a penguin here would leave floe 4 with nowhere to put the penguins it still needs. Empty (3,6).
  7. a penguin here would leave floe 4 with nowhere to put the penguins it still needs. Empty (4,6).
  8. a penguin here would leave floe 8 with nowhere to put the penguins it still needs. Empty (8,8).
  9. a penguin here would leave floe 8 with nowhere to put the penguins it still needs. Empty (9,8).
  10. floe 7 still needs two penguins, and every other free field here touches this one, so the second penguin would have nowhere to stand. Empty (8,6).
  11. floe 7: every way of spacing out the missing penguins uses this field. Penguin at (9,7).
  12. column 7 gets all the penguins it still needs from floe 4, so the rest of column 7 stays empty. Empty (1,7), (6,7), (7,7).
  13. floe 7: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (7,6).
  14. the penguin at row 7, column 6 needs space around it, so everything it touches stays empty, corners included. Empty (6,5), (6,6), (7,5), (8,5).
  15. column 6 gets all the penguins it still needs from floe 3, so the rest of column 6 stays empty. Empty (1,6).
  16. a penguin here would leave floe 2 with nowhere to put the penguins it still needs. Empty (1,4).
  17. a penguin here would leave column 5 with nowhere to put the penguins it still needs. Empty (2,4).
  18. a penguin here would leave floe 3 with nowhere to put the penguins it still needs. Empty (2,5).
  19. a penguin here would leave column 5 with nowhere to put the penguins it still needs. Empty (2,6).
  20. a penguin here would leave column 8 with nowhere to put the penguins it still needs. Empty (6,9).
  21. a penguin here would leave row 8 with nowhere to put the penguins it still needs. Empty (7,3).
  22. a penguin here would leave row 8 with nowhere to put the penguins it still needs. Empty (9,3).
  23. column 6: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (5,6).
  24. the penguin at row 5, column 6 needs space around it, so everything it touches stays empty, corners included. Empty (4,7).
  25. column 7: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (3,7).
  26. the penguin at row 3, column 7 needs space around it, so everything it touches stays empty, corners included. Empty (2,8).
  27. row 2: every way of spacing out the missing penguins uses this field. Penguin at (2,9).
  28. floe 1 still needs two penguins, and every other free field here touches this one, so the second penguin would have nowhere to stand. Empty (2,2).
  29. floe 2: every way of spacing out the missing penguins uses this field. Penguin at (1,5).
  30. the penguin at row 2, column 9 needs space around it, so everything it touches stays empty, corners included. Empty (1,8), (1,9).
  31. row 2: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (2,1).
  32. the penguin at row 2, column 1 needs space around it, so everything it touches stays empty, corners included. Empty (1,1), (1,2), (3,1).
  33. row 1: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (1,3).
  34. floe 1 already has both penguins, so the rest of it stays empty. Empty (3,3).
  35. column 8 still needs two penguins, and every other free field here touches this one, so the second penguin would have nowhere to stand. Empty (6,8).
  36. column 8: every way of spacing out the missing penguins uses this field. Penguin at (5,8), (7,8).
  37. floe 5 still needs two penguins, and every other free field here touches this one, so the second penguin would have nowhere to stand. Empty (5,2).
  38. floe 5: every way of spacing out the missing penguins uses this field. Penguin at (4,1).
  39. the penguin at row 5, column 8 needs space around it, so everything it touches stays empty, corners included. Empty (4,9), (5,9).
  40. the penguin at row 7, column 8 needs space around it, so everything it touches stays empty, corners included. Empty (7,9), (8,9).
  41. row 5 already has both penguins, so the rest of it stays empty. Empty (5,3).
  42. row 7 already has both penguins, so the rest of it stays empty. Empty (7,1), (7,2), (7,4).
  43. column 1 already has both penguins, so the rest of it stays empty. Empty (6,1), (9,1).
  44. row 4: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (4,3).
  45. row 8: exactly two free fields are left and both penguins are missing, so every free field takes a penguin. Penguin at (8,2), (8,4).
  46. column 9: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (9,9).
  47. the penguin at row 4, column 3 needs space around it, so everything it touches stays empty, corners included. Empty (3,4).
  48. the penguin at row 8, column 2 needs space around it, so everything it touches stays empty, corners included. Empty (9,2).
  49. the penguin at row 8, column 4 needs space around it, so everything it touches stays empty, corners included. Empty (9,4), (9,5).
  50. column 3 already has both penguins, so the rest of it stays empty. Empty (6,3).
  51. row 3: one free field is left and one penguin is missing, so every free field takes a penguin. Penguin at (3,5).
  52. row 6: exactly two free fields are left and both penguins are missing, so every free field takes a penguin. Penguin at (6,2), (6,4).

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