... by: Auk-Epitech

My solver solved it in 0.012 seconds

... by: savitaandurkar@gmail.com

5 4 7 9 2 8 3 1 6
2 6 3 7 4 1 8 5 9
9 8 1 5 6 3 4 2 7

4 3 5 6 1 9 2 7 8
1 9 8 2 3 7 6 4 5
7 2 6 8 5 4 9 3 1

8 5 2 4 7 6 1 9 3
3 7 9 1 8 2 5 6 4
6 1 4 3 9 5 7 8 2 good exercise for my solver.

... by: JC Van Hay

#1. Double Exocet (1459)D13 + (1459)F79 :=> -1459D8(=7)F2(=2); UP25; HP(27-14569)E46
#2. Rank 0 Multi-Fish : (1459)Columns(258) covered by E28,DF5,14RowA,45RowB,59RowG,19RowJ :=> -14A2679,-45B147,-59G1369,-19J147
:::. HT(159-237)CDH3; Swordfish(5) : B5=B8-G8=G2-H3=D3 :=> -5D5
#3. AALS(1459)DF5 :=> [9E2==5D3]-5E2,9D3; G2=5=D3; UP27

NP(14)DF5-1J5=(1-9)J2=*[9E2=*9G2-(9=2367)G3569-6J4=(6-5)D4=5D3]
||
5F5-5D4=5D3
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9DF5-(9=2367)G3569-6J4=(6-5)D4=5D3

:::. NP(89)GH8-8AB8J7,9E8H7; HP(45-3)H79
:::. LC(5F45)-5F79; Swordfish(9) : F7=E7-E2=J2-H13=H6 :=> -9F6

#4. 1A8=(1-6)A2=*[(1=456)EFH9-6A9=*(6-8)A7=8A6-(8=41)F69]:=> -1C9E8; A8=1; UP28
:::. NP(46)AB2-4C1E2,6B1J2; NP(19)H3J2-19H1; NP(23)BH1-23CGJ1
:::. Swordfish(1) : F9=E9-E2=J2-J5=FD5 :=> -1F4
:::. Swordfish(4) : C6=C79-B8=E8-E1=D1 :=> -4D6
#5. (9=86)J81-6J4=(6-1)D4=1H4-1H3=1J2 :=> -9J2; 15 Singles; UP43
:::. XWing(2A356,2G35)-2B5
:::. Kite(3BH1,3G39)-3C9; ER(3BH1,3H6J4)-3B4
:::. Swordfish(7AB3,7ABG5,7ACG9)-7AB7
:::. Wing[(72)E6,(23)H6,(37)J4]-7E4; 2 Singles; UP45
:::. Wing[2AG5,(23)H6,(34)C6]-4A5; 2 Singles; UP47
:::. Wing[(78)B4,(83)B7,(37)J7]-7J4; 9 Singles; UP56
:::. Wing[(37)B3,(78)B4,(83)A6]-3A3; ste

... by: ray

#1. Apply basic strategies and bi-location tools.
#2. Need to form, progressively, the following 4-bi-location cell set B4C1E9H7.Forcing the various
4-cell values leads to inconclusions or contradictions until B4C1E9H7 = (7,9,5,5) which gives the solution.
#3. Using this solution(with basic strategies), no 1-cell or 2-cell are found; 3-cell solutions found are: C6E6J5 = (3,7,9), B4GH6 = (7,6,2), BD5J4 = (4,1,3).