(solve "...8.......9.76.....1...54..2......3.3.45..2.4...32.1..56...1.....78.........9..8")
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*** SudoRules 20.1.s based on CSP-Rules 2.1.s, config = W+SFin
*** Using CLIPS 6.32-r770
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singles
145 candidates, 619 csp-links and 619 links. Density = 5.93%
whip[1]: c2n1{r9 .} ==> r9c1 ≠ 1, r8c1 ≠ 1
whip[1]: r8n6{c8 .} ==> r9c8 ≠ 6, r9c7 ≠ 6
whip[1]: r7n9{c9 .} ==> r8c8 ≠ 9, r8c7 ≠ 9
whip[1]: r7n7{c9 .} ==> r9c8 ≠ 7, r9c7 ≠ 7
whip[1]: c9n2{r2 .} ==> r2c7 ≠ 2, r1c7 ≠ 2
naked-pairs-in-a-column: c3{r5 r6}{n7 n8} ==> r4c3 ≠ 8, r4c3 ≠ 7, r1c3 ≠ 7
naked-single ==> r4c3 = 5
whip[1]: c3n7{r6 .} ==> r4c1 ≠ 7, r5c1 ≠ 7, r6c2 ≠ 7
naked-pairs-in-a-row: r6{c2 c4}{n6 n9} ==> r6c7 ≠ 9, r6c7 ≠ 6
naked-pairs-in-a-row: r2{c7 c8}{n3 n8} ==> r2c1 ≠ 3
whip[1]: r2n3{c8 .} ==> r1c7 ≠ 3, r1c8 ≠ 3
naked-pairs-in-a-column: c6{r1 r8}{n1 n5} ==> r5c6 ≠ 1, r4c6 ≠ 1
hidden-single-in-a-row ==> r5c1 = 1
whip[1]: r5n6{c9 .} ==> r4c8 ≠ 6
whip[1]: r5n9{c9 .} ==> r4c8 ≠ 9
naked-pairs-in-a-block: b6{r4c8 r6c7}{n7 n8} ==> r5c9 ≠ 7, r5c7 ≠ 8, r5c7 ≠ 7
naked-pairs-in-a-block: b1{r1c2 r3c1}{n6 n7} ==> r1c1 ≠ 7, r1c1 ≠ 6
hidden-pairs-in-a-column: c9{n1 n2}{r1 r2} ==> r1c9 ≠ 9, r1c9 ≠ 7, r1c9 ≠ 6
biv-chain-cn[3]: c7n9{r1 r5} - c9n9{r5 r7} - c9n7{r7 r3} ==> r1c7 ≠ 7
stte