197 the step used by Ian Sutton's Carbonite, a frequently copied stone

381 21-point imp number, commonly used in spiral clears to wipe 3 and 7 point imps

833 the initial step for Mice, the winner of the First International Core War Tournament

889 9-point imp number

1143 7-point imp number

2087 23-point imp number

2234 mod-2 optima

2340 mod-20 optima

2353 17-point imp number

2365 mod-5 optima

2376 mod-8 optima

2430 mod-10 optima

2667 3-point imp number

2930 mod-10 optima

2936 mod-8 optima

2940 mod-20 optima

2963 27-point imp number

3039 mod-1 optima

3024 mod-16 optima

3044 mod-4 optima

3077 13-point imp number

3094 mod-2 optima

3315 mod-5 optima

3344 mod-16 optima

3359 mod-1 optima

3364 mod-4 optima

3871 31-point imp number

4001 2-point mirrored imp number

5091 11-point imp number

6069 29-point imp number

6557 the anti-imp step used by David Moore's Recon 2 against 3, 7, 9 and 11 point imps

7579 19-point imp number

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