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These instances are available in a plain text file format as well as an XML format. See also :

- A zip file of all the instances.
- The file format guide and how to interpret the constraints and objectives.
- How to verify new solutions.
- A formal problem definition.
- New results are announced on the changes page.

Instance	Days	Staff	Tasks	Best known	Reference
1	7	10	1	383	TRA26
2	7	10	1	132	TRA26
3	7	10	1	274	TRA26
4	7	10	1	304	TRA26
5	7	10	2	0	TRA26
6	7	20	1	751	TRA26
7	7	20	1	727	TRA26
8	7	20	2	763	TRA26
9	7	20	2	318	TRA26
10	7	20	3	59	TRA26
11	7	30	1	726	TRA26
12	7	30	2	1375	TRA26
13	7	30	2	1283	TRA26
14	7	30	3	1279	TRA26
15	7	30	4	270	TRA26
16	7	40	2	1486	TRA26
17	7	40	2	1563	TRA26
18	7	40	3	1411	TRA26
19	7	40	4	1014	TRA26
20	7	40	5	445	TRA26
21	7	50	2	1461	TRA26
22	7	50	3	2424	TRA26
23	7	50	4	1927	TRA26
24	7	50	5	1347	TRA26
25	7	50	7	688	TRA26
26	7	60	2	1490	TRA26
27	7	60	3	2402	TRA26
28	7	60	4	2582	TRA26
29	7	60	6	1890	TRA26
30	7	60	8	1101	TRA26
31	7	70	3	2324	TRA26
32	7	70	4	3022	TRA26
33	7	70	5	2709	TRA26
34	7	70	7	2217	TRA26
35	7	70	9	1280	TRA26
36	7	80	3	2300	TRA26
37	7	80	4	3132	TRA26
38	7	80	6	3272	TRA26
39	7	80	8	2601	TRA26
40	7	80	10	1671	TRA26
41	7	90	3	2341	TRA26
42	7	90	5	4014	TRA26
43	7	90	6	4119	TRA26
44	7	90	9	3051	TRA26
45	7	90	12	1438	TRA26
46	7	100	4	3249	TRA26
47	7	100	5	4060	TRA26
48	7	100	7	3893	TRA26
49	7	100	10	3508	TRA26
50	7	100	13	2100	TRA26
51	7	110	4	3111	TRA26
52	7	110	6	4942	TRA26
53	7	110	8	4448	TRA26
54	7	110	11	3242	TRA26
55	7	110	14	2569	TRA26
56	7	120	4	3036	TRA26
57	7	120	6	4743	TRA26
58	7	120	8	5293	TRA26
59	7	120	12	4333	TRA26
60	7	120	15	2440	TRA26
61	7	130	5	3941	TRA26
62	7	130	7	5642	TRA26
63	7	130	9	5605	TRA26
64	7	130	13	4111	TRA26
65	7	130	17	3085	TRA26
66	7	140	5	3988	TRA26
67	7	140	7	5610	TRA26
68	7	140	10	5997	TRA26
69	7	140	14	4084	TRA26
70	7	140	18	2485	TRA26
71	7	150	5	3829	TRA26
72	7	150	8	6481	TRA26
73	7	150	10	6482	TRA26
74	7	150	15	5193	TRA26
75	7	150	19	2713	TRA26
76	14	10	1	538	TRA26
77	14	10	1	775	TRA26
78	14	10	1	581	TRA26
79	14	10	1	509	TRA26
80	14	10	2	6	TRA26
81	14	20	1	1510	TRA26
82	14	20	1	1493	TRA26
83	14	20	2	1053	TRA26
84	14	20	2	894	TRA26
85	14	20	3	122	TRA26
86	14	30	1	1585	TRA26
87	14	30	2	2397	TRA26
88	14	30	2	2337	TRA26
89	14	30	3	2136	TRA26
90	14	30	4	1137	TRA26
91	14	40	2	3080	TRA26
92	14	40	2	3342	TRA26
93	14	40	3	2988	TRA26
94	14	40	4	3381	TRA26
95	14	40	5	1264	TRA26
96	14	50	2	3184	TRA26
97	14	50	3	4066	TRA26
98	14	50	4	3867	TRA26
99	14	50	5	3568	TRA26
100	14	50	7	922	TRA26
101	14	60	2	3125	TRA26
102	14	60	3	4807	TRA26
103	14	60	4	5412	TRA26
104	14	60	6	4166	TRA26
105	14	60	8	2579	TRA26
106	14	70	3	4770	TRA26
107	14	70	4	6156	TRA26
108	14	70	5	5103	TRA26
109	14	70	7	4586	TRA26
110	14	70	9	3320	TRA26
111	14	80	3	4662	TRA26
112	14	80	4	6373	TRA26
113	14	80	6	6356	TRA26
114	14	80	8	5675	TRA26
115	14	80	10	3914	TRA26
116	14	90	3	4672	TRA26
117	14	90	5	7413	TRA26
118	14	90	6	7901	TRA26
119	14	90	9	5303	TRA26
120	14	90	12	3070	TRA26
121	14	100	4	6234	TRA26
122	14	100	5	8099	TRA26
123	14	100	7	8673	TRA26
124	14	100	10	7663	TRA26
125	14	100	13	3998	TRA26
126	14	110	4	6447	TRA26
127	14	110	6	9165	TRA26
128	14	110	8	8715	TRA26
129	14	110	11	7608	TRA26
130	14	110	14	3540	TRA26
131	14	120	4	6163	TRA26
132	14	120	6	9885	TRA26
133	14	120	8	10709	TRA26
134	14	120	12	7128	TRA26
135	14	120	15	5026	TRA26
136	14	130	5	7816	TRA26
137	14	130	7	11406	TRA26
138	14	130	9	10566	TRA26
139	14	130	13	7077	TRA26
140	14	130	17	4367	TRA26
141	14	140	5	7915	TRA26
142	14	140	7	11507	TRA26
143	14	140	10	11255	TRA26
144	14	140	14	8694	TRA26
145	14	140	18	5241	TRA26
146	14	150	5	7761	TRA26
147	14	150	8	13141	TRA26
148	14	150	10	12992	TRA26
149	14	150	15	8634	TRA26
150	14	150	19	5728	TRA26
151	28	10	1	1486	TRA26
152	28	10	1	1329	TRA26
153	28	10	1	1597	TRA26
154	28	10	1	1285	TRA26
155	28	10	2	24	TRA26
156	28	20	1	3359	TRA26
157	28	20	1	3074	TRA26
158	28	20	2	2643	TRA26
159	28	20	2	2071	TRA26
160	28	20	3	696	TRA26
161	28	30	1	3058	TRA26
162	28	30	2	4937	TRA26
163	28	30	2	4896	TRA26
164	28	30	3	4145	TRA26
165	28	30	4	1727	TRA26
166	28	40	2	6467	TRA26
167	28	40	2	6455	TRA26
168	28	40	3	6000	TRA26
169	28	40	4	5832	TRA26
170	28	40	5	2938	TRA26
171	28	50	2	6207	TRA26
172	28	50	3	8164	TRA26
173	28	50	4	7399	TRA26
174	28	50	5	6234	TRA26
175	28	50	7	2741	TRA26
176	28	60	2	6233	TRA26
177	28	60	3	9343	TRA26
178	28	60	4	11590	TRA26
179	28	60	6	8257	TRA26
180	28	60	8	4050	TRA26
181	28	70	3	9509	TRA26
182	28	70	4	12791	TRA26
183	28	70	5	12291	TRA26
184	28	70	7	10073	TRA26
185	28	70	9	5460	TRA26
186	28	80	3	9466	TRA26
187	28	80	4	13012	TRA26
188	28	80	6	13799	TRA26
189	28	80	8	9941	TRA26
190	28	80	10	5915	TRA26
191	28	90	3	9142	TRA26
192	28	90	5	14830	TRA26
193	28	90	6	14741	TRA26
194	28	90	9	12584	TRA26
195	28	90	12	4346	TRA26
196	28	100	4	12613	TRA26
197	28	100	5	15969	TRA26
198	28	100	7	17649	TRA26
199	28	100	10	13106	TRA26
200	28	100	13	7235	TRA26
201	28	110	4	12674	TRA26
202	28	110	6	19760	TRA26
203	28	110	8	19298	TRA26
204	28	110	11	14956	TRA26
205	28	110	14	7310	TRA26
206	28	120	4	12566	TRA26
207	28	120	6	19526	TRA26
208	28	120	8	19777	TRA26
209	28	120	12	15086	TRA26
210	28	120	15	11076	TRA26
211	28	130	5	15906	TRA26
212	28	130	7	22831	TRA26
213	28	130	9	22510	TRA26
214	28	130	13	14691	TRA26
215	28	130	17	11408	TRA26
216	28	140	5	15732	TRA26
217	28	140	7	22719	TRA26
218	28	140	10	21729	TRA26
219	28	140	14	18990	TRA26
220	28	140	18	10810	TRA26
221	28	150	5	15859	TRA26
222	28	150	8	26127	TRA26
223	28	150	10	24515	TRA26
224	28	150	15	18425	TRA26
225	28	150	19	10866	TRA26

References

QU20 : Qu, Y. and Curtois, T. Solving the Multi-Activity Shift Scheduling Problem Using Variable Neighbourhood Search. 9th International Conference on Operations Research and Enterprise Systems (ICORES) 2020, Accepted for publication.
TRA26 : Trautsch, L.K., Kovari, B. Multi-neighborhood simulated annealing for the multi-activity multi-day shift scheduling problem. Journal of Scheduling 2026, Accepted for publication. https://doi.org/10.1007/s10951-026-00886-z