Bonsoir André et à tous,
Sauf erreur de ma part, deux interdits suffisent.
_|_a_____b_______c____|_d______e______f_____|_g______h______i
1|_4_____1a2A___1257_|_8______26______13___|_23579__5679___2679
2|123D5__9______1257_|_26_____4_______13___|_2357___567____8
3|_6_____238_____238_|_9_______7_______5___|_1_______4______2d3D
4|12n3d8_12N68___4___|_567____1568____9____|_3D57___1578___17
5|_9______5______13D8|_47_____18______2____|_6_______178____13d47
6|…
1) Interdit AD (2b1bc3) dn (a4) NA (2b4b1) => A faux => b1=1, f1=3, f2=1
_|_a_____b_______c____|_d______e______f_____|_g______h______i
1|_4_____1_______257__|_8______26_____3____|_2579__5679___2679
2|_235___9_______257__|_26_____4______1____|_2357__567____8
3|_6_____238_____238__|_9______7______5____|_1_____4______23
4|1238___268_____4____|_567f___1568____9___|_357___1578___1e7E
5|_9______5______138__|_4f7F___18______2___|_6_____178____134F7
6|_1h8H__7______168__|_456_____3______4i8I_|_459____2_____149
7|_125____246____125__|_3______259_____7___|_8______169___12469
8|_7______23468__2368_|_1______289_____4I8i_|_249____69____5
9|1M258__248_____9___|_245_____258____6____|_247____3_____1m247
2) Interdit fE (7d4i4) em (1i4i9) Mh (1a9a6) HI (8a6f6) if (4f6d5) => f faux, d5=7, etc. au bout.
A+