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Str8ts Weekly Extreme #44 - Solution

Solution to the weekly extreme Str8ts puzzle #44 from www.str8ts.com

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Str8ts Weekly Extreme #44 - Solution

  1. 1. Weekly Extreme Str8ts Puzzle #44 April 24– April 30, 2011www.str8ts.com<br />Solution bySlowThinker<br />
  2. 2. Start<br />
  3. 3. Howfarthesolvergetsyou…<br />
  4. 4. G4=8h, J4=6<br />
  5. 5. E3=5h, F3=4c, F4=5, H4=4<br />
  6. 6. Removingcandidates…<br />Note thehidden pair 45 in A..E6, which in turn makes a nakedquintuple in B3..7=12345.<br />
  7. 7. B1=7s, H9=3s, D8=3s, C2=4s<br />
  8. 8. C1=5, D1=6, E1=8, D2=5<br />
  9. 9. E2=6, F2=7, F5=6, C3=3c<br />
  10. 10. B3=2c, A4=2d, C5=2s, C6=1, D6=2<br />
  11. 11. D7=1, E7=2, G2=3s, H1=1d, G1=2c<br />
  12. 12. F9=2s, F8=1, E8=4, E9=1<br />
  13. 13. G9=4c, G8=5s, G7=6c, H7=7c<br />
  14. 14. B8=6c, C8=7c, H8=2c, C9=8c, B9=9<br />
  15. 15. B2=8, H2=9, H3=8, H5=5, H6=6<br />
  16. 16. J6=7c, J3=9, J5=8, G5=7c, B7=4p<br />
  17. 17. B6=5, A7=3, A6=4, A5=1, B5=3, B4=1<br />
  18. 18. Glossary<br />Letters appended to steps indicate the last strategy used, just before filling in a field:<br />No letter … number was last candidate in field<br />s … single (last) candidate for that number in compartment<br />c … compartment range check<br />d … stranded (unreachable/impossible) digits removed<br />h … high/low range check across compartments<br />p/t/q … naked pair / naked triple / naked quadruple<br />ph/th/qh … hidden pair / hidden triple / hidden quadruple<br />x … X-wing (2 rows / 2 columns)<br />w … Swordfish (3 rows / 3 columns)<br />j … Jellyfish (4 rows / 4 columns)<br />L … large gap field<br />Sx … Setti’s rule (count the numbers rule) – ‘x’ is the analysed number<br />u … unique rectangle<br />y … Y-Wing or XY-chains<br />
  19. 19. Weekly Extreme Str8ts Puzzle #44www.str8ts.com<br />Solution by SlowThinker<br />Note: there are other (maybe easier) ways to solve this puzzle.<br />

Solution to the weekly extreme Str8ts puzzle #44 from www.str8ts.com

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