Here is scenario in which KT makes the postseason with 0 additional wins (65 total).

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
          Hanwha	88	53	3	0.6241	0.0
              LG	88	53	3	0.6241	0.0
             SSG	76	62	6	0.5507	10.5
         Samsung	72	69	3	0.5106	16.0
              KT	65	73	6	0.4710	21.5
              NC	64	72	8	0.4706	21.5
           Lotte	64	73	7	0.4672	22.0
             KIA	65	75	4	0.4643	22.5
          Doosan	61	75	8	0.4485	24.5
          Kiwoom	50	88	6	0.3623	36.5

To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
              LG	80	49	3	12	0.620	0.0
          Hanwha	76	53	3	12	0.589	4.0
             SSG	65	60	4	15	0.520	13.0
              KT	65	63	4	12	0.508	14.5
         Samsung	66	64	2	12	0.508	14.5
           Lotte	63	64	6	11	0.496	16.0
              NC	61	62	6	15	0.496	16.0
             KIA	61	65	4	14	0.484	17.5
          Doosan	56	70	6	12	0.444	22.5
          Kiwoom	43	86	4	11	0.333	37.0

The next two tables show, respectively, how many of their remaining games each team wins and ties against each of the other teams in the scenario:

					Scenario Additional Wins Against
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Wins
Doosan	-	0	0	1	0	1	1	1	1	0	5
Hanwha	1	-	3	1	2	3	1	0	0	1	12
KIA	0	0	-	0	1	0	1	2	0	0	4
Kiwoom	0	0	1	-	1	0	1	1	2	1	7
KT	0	0	0	0	-	0	0	0	0	0	0
LG	0	0	0	0	4	-	1	2	1	0	8
Lotte	0	0	0	0	0	0	-	1	0	0	1
NC	0	0	2	0	0	0	1	-	0	0	3
Samsung	0	0	2	0	1	0	2	1	-	0	6
SSG	4	0	2	0	1	0	1	2	1	-	11
-----------------------------------------------------------------------------------
Losses	5	0	10	2	10	4	9	10	5	2

					Scenario Additional Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	1	0	2	0	0	1	2	0	0	2
Hanwha	0	-	0	0	0	1	0	0	0	0	0
KIA	0	0	-	2	0	0	0	0	0	1	0
Kiwoom	2	0	0	-	0	0	0	1	0	1	2
KT	0	0	0	0	-	0	0	2	0	1	2
LG	0	0	0	0	0	-	2	0	0	0	0
Lotte	0	0	0	0	0	0	-	0	2	0	1
NC	0	0	0	0	1	0	0	-	0	2	2
Samsung	0	0	0	0	0	0	1	0	-	1	1
SSG	0	0	0	0	1	0	0	1	0	-	2
-----------------------------------------------------------------------------------
Total	2	0	0	2	2	0	1	2	1	2

The next two tables show, respectively, how many total games each team wins and ties against each of the other teams in the scenario:

					Scenario Total Wins Against
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Wins
Doosan	-	8	6	10	4	7	8	6	7	5	61
Hanwha	7	-	12	14	11	8	10	9	8	9	88
KIA	9	4	-	7	9	5	9	8	7	7	65
Kiwoom	4	2	7	-	6	7	5	6	6	7	50
KT	11	5	7	10	-	4	6	6	10	6	65
LG	9	7	11	9	12	-	10	10	10	10	88
Lotte	7	6	7	11	8	4	-	8	7	6	64
NC	8	6	8	9	8	6	8	-	7	4	64
Samsung	9	8	9	10	6	6	7	9	-	8	72
SSG	11	7	8	8	9	6	10	10	7	-	76
-----------------------------------------------------------------------------------
Losses	75	53	75	88	73	53	73	72	69	62

					Scenario Total Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	1	1	2	1	0	1	2	0	0	8
Hanwha	0	-	0	0	0	1	0	1	0	0	3
KIA	0	0	-	2	0	0	0	0	0	1	4
Kiwoom	2	0	0	-	0	0	0	1	0	1	6
KT	0	0	0	0	-	0	2	2	0	1	6
LG	0	0	0	0	0	-	2	0	0	0	3
Lotte	0	0	0	0	0	0	-	0	2	0	7
NC	0	0	0	0	1	0	0	-	0	2	8
Samsung	0	0	0	0	0	0	1	0	-	1	3
SSG	0	0	0	0	1	0	0	1	0	-	6
-----------------------------------------------------------------------------------
Total	8	3	4	6	6	3	7	8	3	6

# KT Wiz magic number
# KT's magic number
# Wiz magic number
# KBO Playoff Race