Easy Puzzle #9 - One Possible Solution Approach…
	NB:  There is only one final solution to this Sudoku puzzle…
	Rules: Place a number from 1-9 in each empty cell so that each row, each column AND each 3x3 block contains all the numbers from 1-9.
	A	B	C	D	E	F	G	H	I
1
2	AA			BB			CC				Reference to 3x3 Blocks AA, BB & CC
3
4
5	DD			EE			FF				Reference to 3x3 Blocks DD, EE & FF
6
7
8	GG			HH			II				Reference to 3x3 Blocks GG, HH & II
9
	A	B	C	D	E	F	G	H	I
1			6		7	1	9				Easy Puzzle #9 - October 9, 2005
2		5		2		6		3	4		One possible Solution Method follows below…
3	8				3		7		6
4							8	4	7
5			8	7		2	3
6	4	3	7						9
7	6		3						2
8	9	4		3		7		8
9			1	9	6		4
	A	B	C	D	E	F	G	H	I
1			6		7	1	9				Step 1: #7 is in Rows 1 & 3: #7 MUST go in Cell A2
2	7	5		2		6		3	4
3	8				3		7		6
4							8	4	7		Step 2: #3 is in Rows 7 & 8: #3 MUST go in Cell I9
5			8	7		2	3				(cf #3 in Column H @ H2 excludes use of Cell H9)
6	4	3	7						9
7	6		3						2
8	9	4		3		7		8
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1			6		7	1	9				Step 3: #2 is in Columns D & F: #2 MUST go in Cell E8
2	7	5		2		6		3	4		(#2 in Row 7 @ I7 excludes use of Cell E7)
3	8				3		7		6
4							8	4	7
5			8	7		2	3
6	4	3	7						9
7	6		3						2
8	9	4		3	2	7		8
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3		6		7	1	9				Step 4: #3 is in Rows 2 & 3: #3 MUST go in Cell A1
2	7	5		2		6		3	4		(#3 in Column B @ B6 excludes use of Cell B1)
3	8				3		7		6
4							8	4	7		Step 5: #6 is in Rows 7 & 9: #6 MUST go in Cell G8
5			8	7		2	3				(#6 in Column I @ I3 excludes use of Cell I8)
6	4	3	7						9
7	6		3						2
8	9	4		3	2	7	6	8
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3		6	4	7	1	9				Step 6: Block AA needs #4: #4 MUST go in Cell C3
2	7	5		2		6		3	4		(#4 in Column B @ B8 excludes Cells B1 & B3, &
3	8		4		3		7		6		#4 in Row 2 @ I2 excludes Cell C2)
4							8	4	7
5			8	7		2	3				Step 7: Now #4 is in Rows 2 & 3: #4 MUST go in Cell D1
6	4	3	7						9
7	6		3						2
8	9	4		3	2	7	6	8
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3		6	4	7	1	9				Step 8: Block AA needs #1: #1 MUST go in Cell B3
2	7	5		2		6	1	3	4		(#1 in Column C @ C9 excludes Cell C2, &
3	8	1	4		3		7		6		#1 in Row 1 @ F1 excludes Cell B1)
4							8	4	7
5			8	7		2	3				Step 9: Now #1 is in Rows 1 & 3: #1 MUST go in Cell G2…
6	4	3	7						9
7	6		3						2
8	9	4		3	2	7	6	8
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3	2	6	4	7	1	9				Step 10: Complete Block AA: need #s 2 & 9…
2	7	5	9	2		6	1	3	4		#2 can't go in Cell C2 (cf #2 in Row 2 @ D2), so
3	8	1	4		3		7		6		#2 MUST go in Cell B1, & therefore #9 MUST go in Cell C2
4							8	4	7
5			8	7		2	3
6	4	3	7				2		9		Step 11: Complete Column G: need #s 2 & 5…
7	6		3				5		2		#2 can't go in Cell G7 (cf #2 in Row 7 @ I7), so
8	9	4		3	2	7	6	8			#2 MUST go in Cell G6, & therefore #5 MUST go in Cell G7
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3	2	6	4	7	1	9				Step 12: Complete Row 2: #8 MUST go in Cell E2…
2	7	5	9	2	8	6	1	3	4
3	8	1	4		3		7		6
4							8	4	7		Step 13: Complete Row 8: need #s 1 & 5…
5			8	7		2	3				#1 can't go in Cell C8 (cf #1 in Column C @ C9), so
6	4	3	7				2		9		#1 MUST go in Cell I8, & therefore #5 MUST go in Cell C8
7	6		3				5		2
8	9	4	5	3	2	7	6	8	1
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3	2	6	4	7	1	9	5	8		Step 14: Complete Row 1: need #s 5 & 8…
2	7	5	9	2	8	6	1	3	4		#8 can't go in Cell H1 (cf #8 in Column H @ H8), so
3	8	1	4		3		7		6		#8 MUST go in Cell I1, & therefore #5 MUST go in Cell H1
4			2				8	4	7
5			8	7		2	3				Step 15: Complete Column C: #2 MUST go in Cell C4…
6	4	3	7				2		9
7	6		3				5		2
8	9	4	5	3	2	7	6	8	1
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3	2	6	4	7	1	9	5	8		Step 16: Complete Block BB: need #s 5 & 9…
2	7	5	9	2	8	6	1	3	4		#9 can't go in Cell D3 (cf #9 in Column D @ D9), so
3	8	1	4	5	3	9	7	2	6		#9 MUST go in Cell F3, & therefore #5 MUST go in Cell D3
4			2				8	4	7
5			8	7		2	3				Step 17: Complete Block CC: #2 MUST go in Cell H3…
6	4	3	7				2		9
7	6		3				5		2
8	9	4	5	3	2	7	6	8	1
9			1	9	6		4		3
	A	B	C	D	E	F	G	H	I
1	3	2	6	4