Easy Puzzle #19 - 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						2		8	5		Easy Puzzle #19 - October 19, 2005
2	4	3			1	7	9	2	6		Original puzzle as published on joe-ks.com…
3			9	3		8	4		1
4	7			1		5		9
5		6	5		8	9	7		4
6			3			4			2
7		7	6		4
8		2	4		5	1			7
9	9		1		2	6			3
	A	B	C	D	E	F	G	H	I
1						2		8	5		Step 1: Complete Column F: #3 MUST go in Cell F7…
2	4	3			1	7	9	2	6
3			9	3		8	4	7	1		Step 2: #3 is in Columns B & C: #3 MUST go in Cell A8
4	7			1		5		9			(cf #3 from Step 1 excludes use of Cell A7)
5		6	5		8	9	7		4
6			3			4			2		Step 3: #7 is in Columns G & I: #7 MUST go in Cell H3…
7		7	6		4	3
8	3	2	4		5	1			7
9	9		1		2	6			3
	A	B	C	D	E	F	G	H	I
1						2	3	8	5		Step 4: Complete Block CC: #3 MUST go in Cell G1…
2	4	3			1	7	9	2	6
3			9	3		8	4	7	1
4	7	4		1		5		9			Step 5: #4 is in Rows 5 & 6: #4 MUST go in Cell B4
5		6	5		8	9	7		4		(cf #4 in Column C @ C8 excludes use of Cell C4)
6			3			4			2
7		7	6		4	3
8	3	2	4		5	1			7
9	9		1		2	6			3
	A	B	C	D	E	F	G	H	I
1						2	3	8	5		Step 6: #8 is in Rows 1 & 3: #8 MUST go in Cell C2…
2	4	3	8		1	7	9	2	6
3			9	3		8	4	7	1
4	7	4		1		5		9			Step 7: #9 is in Rows 4 & 5: #9 MUST go in Cell B6
5		6	5		8	9	7		4		(#9 in Column A @ A9 excludes Cell A6)
6		9	3			4			2
7		7	6		4	3
8	3	2	4		5	1			7
9	9		1		2	6			3
	A	B	C	D	E	F	G	H	I
1						2	3	8	5		Step 8: Complete Row 2: #5 MUST go in Cell D2…
2	4	3	8	5	1	7	9	2	6
3			9	3		8	4	7	1
4	7	4		1		5		9			Step 9: Block EE needs #2: #2 MUST go in Cell D5
5		6	5	2	8	9	7		4		(#2 in Row 6 @ I6 excludes use of Cells D6 & E6, &
6		9	3			4			2		#2 in Column E @ E9 exlcudes use of Cell E4)
7		7	6		4	3
8	3	2	4		5	1			7
9	9		1		2	6			3
	A	B	C	D	E	F	G	H	I
1						2	3	8	5		Step 10: Complete Row 5: need #s 1 & 3…
2	4	3	8	5	1	7	9	2	6		#3 can’t go in Cell A5 (cf #3 in Column A @ A3), so
3			9	3		8	4	7	1		#3 MUST go in Cell H5, & therefore #1 MUST go in Cell A5
4	7	4		1		5		9
5	1	6	5	2	8	9	7	3	4
6		9	3			4			2
7		7	6		4	3
8	3	2	4		5	1			7
9	9		1		2	6			3
	A	B	C	D	E	F	G	H	I
1			7			2	3	8	5		Step 11: Complete Column C: need #s 2 & 7…
2	4	3	8	5	1	7	9	2	6		#2 can't go in Cell C1 (cf #2 in Row 1 @ F1), so
3			9	3		8	4	7	1		#2 MUST go in Cell C4,  & therefore #7 MUST go in Cell C1
4	7	4	2	1		5		9
5	1	6	5	2	8	9	7	3	4		Step 12: #4 is in Columns G & I: #4 MUST go in Cell H9
6		9	3			4			2		(cf #4 in Row 7 @ E7 excludes Cell H7, & #4 in Row 8
7		7	6		4	3					@ C8 excludes Cell H8)
8	3	2	4		5	1			7
9	9		1		2	6		4	3
	A	B	C	D	E	F	G	H	I
1		1	7			2	3	8	5		Step 13: #1 is in Columns A & C: #1 MUST go in Cell B1
2	4	3	8	5	1	7	9	2	6		(cf #1 in Row 3 @ I3 excludes use of Cell B3)
3			9	3		8	4	7	1
4	7	4	2	1		5		9
5	1	6	5	2	8	9	7	3	4
6		9	3			4			2
7		7	6		4	3
8	3	2	4		5	1			7
9	9		1		2	6		4	3
	A	B	C	D	E	F	G	H	I
1		1	7			2	3	8	5		Step 14: #2 is in Rows 1 & 2: #2 MUST go in Cell A3
2	4	3	8	5	1	7	9	2	6		(#3 in Column B @ B8 excludes B3)
3	2		9	3		8	4	7	1
4	7	4	2	1		5		9
5	1	6	5	2	8	9	7	3	4
6		9	3			4			2
7		7	6		4	3
8	3	2	4		5	1			7
9	9		1		2	6		4	3
	A	B	C	D	E	F	G	H	I
1	6	1	7			2	3	8	5		Step 15: Complete Block AA: need #s 5 & 6…
2	4	3	8	5	1	7	9	2	6		#6 can't go in Cell B3 (cf #6 is in Column B @ B5), so
3	2	5	9	3		8	4	7	1		#6 MUST go in Cell A1, & therefore #5 MUST go in Cell B3
4	7	4	2	1	3	5		9
5	1	6	5	2	8	9	7	3	4		Step 16: #3 is in Columns D & F: #3 MUST go in Cell E4
6		9	3			4			2		(cf #3 in Row 6 @ C6 excludes use of Cell E6)
7		7	6		4	3
8	3	2