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	Easy Puzzle #8 - One Possible Solution Approach…
	NB:  There is only one final solution to this Sudoku puzzle…
	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			9		7	8			2		Easy Puzzle #8 - October 8, 2005
2		7	5				3		1		Original puzzle as published on joe-ks.com…
3	8		3			1		7
4		6			2		8		4
5		3	8	1		4		6	7
6	9		2			7		3	5
7			1		3	2	5		6
8		5	4			6	9		8
9		8			4	5		1
	A	B	C	D	E	F	G	H	I
1			9		7	8			2		Step 1: #9 is in Columns A & C: #9 MUST go in Cell B7…
2		7	5				3		1
3	8		3			1		7			Step 2: #1 is in Columns D & F: #1 MUST go in Cell E8…
4		6			2		8		4
5		3	8	1		4		6	7		Step 3: #3 is in Columns G & H: #3 MUST go in Cell I9…
6	9		2			7		3	5
7		9	1		3	2	5		6
8		5	4		1	6	9		8
9		8			4	5		1	3
	A	B	C	D	E	F	G	H	I
1			9	3	7	8			2		Step 4: #3 is in Rows 2 & 3: #3 MUST go in Cell D1…
2		7	5				3		1
3	8		3			1		7
4		6			2		8		4		Step 5: #4 is in Rows 4 & 5: #4 MUST go in Cell B6…
5		3	8	1		4		6	7
6	9	4	2			7		3	5
7		9	1		3	2	5		6		Step 6: #9 is in Rows 7 & 8: #9 MUST go in Cell D9…
8		5	4		1	6	9		8
9		8		9	4	5		1	3
	A	B	C	D	E	F	G	H	I
1			9	3	7	8			2		Step 7: Block DD needs #1: #1 MUST go in Cell A4…
2		7	5				3	8	1		(NB: #1 in Row 5 excludes Cell A5, and
3	8		3			1		7			#1 in Column C excludes Cell C4: only one left is A4)
4	1	6			2		8		4
5		3	8	1		4		6	7		Step 8: Block HH needs 2 #s: #7 & 8…
6	9	4	2			7		3	5		#8 can't go in Cell D8 (because of #8 in Row 8 @ I8), so
7		9	1	8	3	2	5		6		#8 MUST go in Cell D7, & therefore #7 MUST go in Cell D8
8		5	4	7	1	6	9		8
9		8		9	4	5		1	3		Step 9: #8 is in Rows 1 & 3: #8 MUST go in Cell H2…
	A	B	C	D	E	F	G	H	I
1		1	9	3	7	8			2		Step 10: Row 7 needs 2 #s: 4 & 7…
2		7	5				3	8	1		#7 can't go in Cell H7 (because of #7 in Column H @ H3)
3	8		3			1		7			so #7 MUST go in Cell A7, & therefore #4 MUST go in H7.
4	1	6			2		8		4
5		3	8	1		4		6	7		Step 11: #1 is in Rows 2 & 3: #1 MUST go in Cell B1
6	9	4	2			7		3	5		(because #1 in Column A @ A4 excludes Cell A1)
7	7	9	1	8	3	2	5	4	6
8		5	4	7	1	6	9		8
9		8		9	4	5		1	3
	A	B	C	D	E	F	G	H	I
1		1	9	3	7	8			2		Step 12: Complete Column B: #2 MUST go in Cell B3…
2		7	5				3	8	1
3	8	2	3			1		7	9		Step 13: Column C needs 2 #s: #s 6 & 7…
4	1	6	7		2		8		4		#6 can't go in Cell C4 (cf #6 in Row 4 @ Cell B4), so
5		3	8	1		4		6	7		#6 MUST go in Cell C9, & therefore #7 MUST go in Cell C4
6	9	4	2			7		3	5
7	7	9	1	8	3	2	5	4	6		Step 14: Complete Column I: #9 MUST go in Cell I3…
8		5	4	7	1	6	9		8
9		8	6	9	4	5		1	3
	A	B	C	D	E	F	G	H	I
1		1	9	3	7	8			2		Step 15: Complete Block DD: #5 MUST go in Cell A5…
2		7	5				3	8	1
3	8	2	3			1		7	9		Step 16: Block GG needs 2 #s: #s 2 & 3…
4	1	6	7		2		8		4		#3 can't go in Cell A9 (since #3 is in Row 9 @ I9), so
5	5	3	8	1		4		6	7		#3 MUST go in Cell A8, & therefore #2 MUST go in Cell A9
6	9	4	2			7		3	5
7	7	9	1	8	3	2	5	4	6		Step 17: Complete Row 8: #2 MUST go in Cell H8…
8	3	5	4	7	1	6	9	2	8
9	2	8	6	9	4	5	7	1	3		Step 18: Complete Block II: #7 MUST go in Cell G9…
	A	B	C	D	E	F	G	H	I
1		1	9	3	7	8			2		Step 19: Block EE needs #3:  #3 can't go in Cells D4 or D6
2		7	5				3	8	1		(cf #3 already in Column D @ D1) & #3 can't go in E5 or
3	8	2	3			1		7	9		E6 (cf #3 in Rows 5 & 6): #3 MUST go in Cell F4…
4	1	6	7		2	3	8		4		(OR could say that #3 is in Column D & E…)
5	5	3	8	1	9	4	2	6	7
6	9	4	2			7		3	5		Step 20: Complete Row 5: need 2 #s: #s 2 & 9….
7	7	9	1	8	3	2	5	4	6		#2 can't go in Cell E5 (#2 in Column E @ E4), so
8	3	5	4	7	1	6	9	2	8		#2 MUST go in Cell G5, & therefore #9 MUST go in Cell E5
9	2	8	6	9	4	5	7	1	3
	A	B	C	D	E	F	G	H	I
1		1	9	3	7	8		5	2		Step 21: Complete Block FF: need 2 #s: #s 1 & 9…
2		7	5				3	8	1		#1 can't go in Cell H4 (cf #1 in Row 4 @ A4), so
3	8	2	3			1		7	9		#1 MUST go in Cell G6, & therefore #9 MUST go in Cell H4
4	1	6	7	5	2	3	8	9	4
5	5	3	8	1	9	4	2	6	7		Step 22: Complete Row 4: #5 MUST go in Cell D4…
6	9	4	2			7	1	3	5
7