@evaluate
interesting - what engine/depth are you looking at?
https://lichess.org/analysis/5rk1/p5p1/2B1p3/3P3p/1P1b4/P7/5qPP/R2Q3K_w_-_-_0_1?color=white#0
looks like SF 16 briefly prefers Rb1 between depth ~30-35 and then alternates back to Rc1 in the 40s
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