Here is scenario in which KT makes the postseason with 3 additional wins (56 total).

Here are the final standings in the scenario:
            Team	W	L	D	PCT	GB
             KIA	98	44	2	0.6901	0.0
         Samsung	98	44	2	0.6901	0.0
              LG	93	51	0	0.6458	6.0
          Doosan	81	59	4	0.5786	16.0
              KT	56	84	4	0.4000	41.0	See explanation of tie-breakers below.
              NC	56	84	4	0.4000	41.0	See explanation of tie-breakers below.
             SSG	55	83	6	0.3986	41.0
          Hanwha	56	85	3	0.3972	41.5
           Lotte	56	85	3	0.3972	41.5
          Kiwoom	55	85	4	0.3929	42.0

Explanation of Tie-breakers:
KT and NC tie for fifth place and play a post-season game; the winner goes on to the wild-card game.

To construct the scenario, we start with the current standings:
            Team	W	L	D	GL	PCT	GB
         Samsung	57	35	2	50	0.620	0.0
              KT	53	36	2	53	0.596	2.5
              LG	53	41	0	50	0.564	5.0
             KIA	50	44	2	48	0.532	8.0
          Doosan	48	44	3	49	0.522	9.0
          Hanwha	44	45	3	52	0.494	11.5
              NC	42	47	2	53	0.472	13.5
           Lotte	41	51	2	50	0.446	16.0
             SSG	36	56	4	48	0.391	21.0
          Kiwoom	35	60	2	47	0.368	23.5

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	-	4	0	5	6	0	3	8	0	7	33
Hanwha	0	-	0	2	8	0	1	0	0	1	12
KIA	4	4	-	4	7	5	4	8	9	3	48
Kiwoom	0	2	0	-	3	0	7	4	0	4	20
KT	0	0	0	0	-	0	0	3	0	0	3
LG	7	6	0	6	4	-	4	6	0	7	40
Lotte	0	8	0	0	6	0	-	1	0	0	15
NC	0	6	0	0	5	0	3	-	0	0	14
Samsung	4	6	0	5	5	5	8	3	-	5	41
SSG	0	4	0	3	4	0	4	4	0	-	19
-----------------------------------------------------------------------------------
Losses	15	40	0	25	48	10	34	37	9	27

					Scenario Additional Draws (Ties) With
Team	Doosan	Hanwha	KIA	Kiwoom	KT	LG	Lotte	NC	Samsung	SSG	Total
Doosan	-	1	0	0	1	0	1	0	2	0	1
Hanwha	1	-	0	1	0	0	0	0	1	0	0
KIA	0	0	-	0	0	0	1	0	0	1	0
Kiwoom	0	1	0	-	3	0	0	0	0	0	2
KT	1	0	0	3	-	0	0	0	0	0	2
LG	0	0	0	0	0	-	0	1	0	0	0
Lotte	1	0	1	0	0	0	-	0	0	1	1
NC	0	0	0	0	0	1	0	-	0	4	2
Samsung	2	1	0	0	0	0	0	0	-	0	0
SSG	0	0	1	0	0	0	1	4	0	-	2
-----------------------------------------------------------------------------------
Total	1	0	0	2	2	0	1	2	0	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	-	9	7	12	9	2	11	14	5	12	81
Hanwha	6	-	6	6	11	6	6	3	2	10	56
KIA	9	10	-	14	10	9	11	10	14	11	98
Kiwoom	4	9	2	-	5	3	9	10	4	9	55
KT	6	5	6	8	-	9	5	9	3	5	56
LG	14	10	7	12	7	-	11	11	5	15	93
Lotte	4	10	4	7	11	5	-	5	4	6	56
NC	2	13	6	6	7	5	11	-	3	3	56
Samsung	10	12	3	13	13	11	12	12	-	12	98
SSG	4	6	3	7	11	1	9	10	4	-	55
-----------------------------------------------------------------------------------
Losses	59	85	44	85	84	51	85	84	44	83

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

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