Test Position: Rxf3!!

[Arturo Ochoa]

[d] r4r2/1p4bk/2p3pp/p1Qnq3/P2pN3/1P1P1BPb/1P1BPP2/R1R3K1 b - - 0 23

How long does it take for your engine/favorite engine to find Rxf3!! with significant plus for Black? (> +1.00... )

[d] 2r4r/kb4p1/pp3p2/3qnQ1p/3Np2P/bPB1P1P1/2PPB1P1/1K3R1R b - -

[d] r1r3k1/1p1bpp2/1p1p1bpB/p2Pn3/P1qNQ3/2P3PP/1P4BK/R4R2 w - -

[d] 1k3r1r/2ppb1p1/Bpb1p1p1/3nP2p/3QNq1P/PP3P2/KB4P1/2R4R w - -

[swami]

Thanks for posting the symmetrical positions.

Would be interesting to find if the solution is the same, or the engine finds them bit faster relative to the time taken in initial position.