An example of called IBD segments between two individuals in the UK10K data set, from (a) rIBD, (b) HaploScore, (c) GERMLINE, and (d) FISHR, with (e) opposite homozygous SNPs (OH) occurring for that pair of individuals in and surrounding the FISHR called IBD segment, and (f) OH occurring in a random pair of individuals at the same location of the called IBD segment. The horizontal offset seen in the rIBD segments represent multiple detected segments, with overlapping segments showing IBD 2.