The New Sudoku Players' Forum

[denis_berthier]

Waves without Fish was too sad. here's one for fishermen

Code: Select all

+-------+-------+-------+
! . . 8 ! 4 . . ! . . 2 !
! . 9 . ! . 6 . ! . 1 . !
! 4 . . ! . . 1 ! 8 . . !
+-------+-------+-------+
! . . 9 ! 5 . . ! . . 4 !
! . 5 . ! . 4 . ! . 2 . !
! 8 . . ! . . 7 ! 6 . . !
+-------+-------+-------+
! . . 5 ! 6 . . ! . . 3 !
! . 8 . ! . 7 . ! . 9 . !
! 9 . . ! . . 2 ! 5 . . !
+-------+-------+-------+

..84....2.9..6..1.4....18....95....4.5..4..2.8....76....56....3.8..7..9.9....25..
SER 4.4


[pjb]

(1) X-wing of 9s (r36\c49) => -9 r5c4;
20 basics;
(2) (2=7)r2c4 - (7=5)r2c9 - (5)r3c89 = (5-2)r3c5 = (2)r6c5 => -2 r3c5, -2 r6c4; stte

Phil

[denis_berthier]

With fishes:

***********************************************************************************************
*** SudoRules 20.1.s based on CSP-Rules 2.1.s, config = SFin
*** Using CLIPS 6.32-r773
***********************************************************************************************
9 singles
158 candidates, 794 csp-links and 794 links. Density = 6.4%
whip[1]: c8n6{r3 .} ==> r3c9 ≠ 6
x-wing-in-rows: n9{r3 r6}{c4 c9} ==> r5c4 ≠ 9
naked-pairs-in-a-column: c4{r5 r8}{n1 n3} ==> r9c4 ≠ 3, r9c4 ≠ 1, r6c4 ≠ 3, r6c4 ≠ 1, r3c4 ≠ 3, r2c4 ≠ 3
singles ==> r9c4 = 8, r2c6 = 8, r4c5 = 8
whip[1]: b5n2{r6c5 .} ==> r6c3 ≠ 2
whip[1]: c3n2{r3 .} ==> r2c1 ≠ 2, r3c2 ≠ 2
whip[1]: r2n3{c3 .} ==> r1c1 ≠ 3, r1c2 ≠ 3, r3c2 ≠ 3, r3c3 ≠ 3
swordfish-in-rows: n1{r1 r4 r7}{c2 c1 c7} ==> r9c2 ≠ 1, r8c7 ≠ 1, r8c1 ≠ 1, r5c7 ≠ 1, r5c1 ≠ 1
naked-single ==> r8c7 = 2
finned-jellyfish-in-rows: n3{r2 r6 r3 r8}{c1 c3 c8 c5} ==> r9c5 ≠ 3
singles and whip[1] to the end