May be worth to examine further

https://gameknot.com/chess-puzzles.pl?s ... de&m=0&s=9
Moderators: hgm, Dann Corbit, Harvey Williamson
Code: Select all
6rr/2q2pkp/2pb1nn1/4B2Q/3P1P2/4N3/2BR1RP1/7K w - - dm 9;
8/1B2N3/2p4p/1b1p1K1k/pRQpP1p1/1q3pP1/Rbrn4/Q4n2 w - - dm 10;
8/8/p5p1/rp3pBk/1p3P1p/pP1p1Rb1/B2P2P1/7K w - - dm 11;
rk4r1/1pn3b1/pN1pp1b1/1p2p1B1/4P3/R1Q2P2/PPP5/1K6 w - - dm 11;
5N2/5p2/BBpNpK2/P2kP3/2p2P2/2p5/2pPbPP1/2r3nn w - - dm 11;
8/5p2/5N2/8/K3nN1p/1p3k2/1Pp2prR/n1B2bbB w - - dm 12;
5b2/p5p1/4p1P1/1p2Rn1p/1P1k1PRn/PK6/3NP1P1/8 w - - dm 12;
7n/2B1p3/R2p3p/1p1Pk2N/4Pb2/2pP3b/P1PRN1n1/K7 w - - dm 12;
6B1/1p2p3/p2pp1pK/N3k3/1R4p1/8/1pP4n/4N3 w - - dm 12;
N7/pp6/1b6/1p1p4/1BkP4/KpPN2Q1/p3q3/rb6 w - - dm 12;
2N5/1pp5/1b6/1p1p4/1BkP4/KpPN2Q1/p3q3/rb6 w - - dm 12;
7N/5pp1/6b1/4p1p1/4PkB1/1Q2NPpK/3q3p/6br w - - dm 12;
8/4Kp2/2p1nR2/2PkP3/4nP1p/BP2P1pr/1p2P1p1/1N4Nb w - - dm 13;
8/3pK3/2p1nR2/2PkP3/4nP1p/BP2P1pr/1p2P1p1/1N4Nb w - - dm 13;
8/4pKpp/2R1Q1rk/6pb/8/5N1P/p2R4/r7 w - - dm 13;
6r1/1p1R4/k1b4b/P1R3pr/BB3pp1/2P5/KP5p/8 w - - dm 14;
8/1p1p1p2/nP1P1P2/8/2B2Pp1/p1B3P1/rrp3PK/kbR5 w - - dm 14;
4B1b1/2p1B1Kp/4p2p/nP1k3N/1P4P1/2pPP1pP/pb2n3/8 w - - dm 14;
6r1/1p1R4/k1b4b/P5pr/BBR2pp1/2P5/KP5p/8 w - - dm 14;
5b1r/6p1/3p1rQn/8/N1kN1K2/2P1p3/2Bn2R1/8 w - - dm 15;
3K1b2/2B1pppB/4P3/1p6/k1NP2p1/3R3b/p3P3/8 w - - dm 15;
R7/1p1p1p2/n2pbP1N/p2p1p2/P2P1P2/4p3/2K1N3/k7 w - - dm 15;
6n1/r1p2p2/1pNp1p2/6pK/2BBk1p1/6P1/1p3P2/3N4 w - - dm 15;
2n5/3p1Kp1/6Nn/2P1Pk2/3R4/5Bp1/2r5/2B1b3 w - - dm 15;
8/4p1K1/N2kppN1/8/B1p1P3/2Pn1RP1/2pp1P2/4b3 w - - dm 16;
2b2n2/pp1pKp2/kN1Pn1r1/1p6/q2p4/1Q2p3/2Bp1r2/1R2B3 w - - dm 16;
n5nr/K6p/1p3N2/2kp2Pp/3N1P2/PpB1P3/1Pp5/4R3 w - - dm 16;
8/8/6pp/6kq/2p1P1pb/3pN1p1/3P1NP1/B3K2R w K - dm 16;
5K2/2p3p1/Q2r2P1/3P4/1P5B/7p/pp4pr/kn4Rb w - - dm 17;
8/4Bp2/3N1P2/3kN2b/1p1P4/2n1K1p1/qQP1n1Pp/5B2 w - - dm 17;
3n4/qr3R2/1p1N1pP1/7P/3K2nB/N7/Bp1k2p1/R2b2r1 w - - dm 17;
8/p3B1Kp/4RRb1/1Np1n3/2Bpk1pP/q7/4P3/b1r5 w - - dm 19;
8/3Br3/7p/8/pr1Bp3/Kpp3q1/7k/3Q4 w - - dm 19;
5q1r/2pBRp2/Q1p4P/2ppp2K/2rkp3/N7/1P5b/2N5 w - - dm 20;
B7/5N2/7Q/2p3B1/5N2/1ppn4/pkp1K3/bb2n3 w - - dm 20;
8/ppnBKR2/1p2p3/2Pk1b2/P4Rp1/3N4/1p3p2/8 w - - dm 20;
2n5/4nN2/K1p5/2p5/2P3BP/3kBp2/2pPppp1/3N2b1 w - - dm 21;
1B6/5Rp1/1p3prp/1P3Pkr/2p3Pb/1R1n1Pp1/3p2P1/3K4 w - - dm 21;
8/7p/1QppB3/2r5/2N1pN1B/4PkP1/5p2/Kn1b1r2 w - - dm 22;
4R1b1/r2p1pP1/B1p2k2/3p3K/1pP2P2/1P2B2p/4Nppb/8 w - - dm 23;
2b1n3/3nKp1p/4p2k/p7/1p2pN1P/2p1B1R1/3p1P2/q1r5 w - - dm 24;
4K3/2p2p2/2P2P2/8/1p3p1R/2R1prp1/1P2prp1/4Bbkn w - - dm 24;
2n5/p1K1pp2/1N4p1/p3k1P1/1PPbp2B/1p1pP1Pr/P1NP4/4n3 w - - dm 24;
8/2ppK1p1/2pn2pb/p2b2pk/3R2Rn/B2PP2P/P7/5B2 w - - dm 24;
7R/p7/Ppp1B1p1/R1n1B2r/4kP1P/3p1p1P/3prp2/3Kb2N w - - dm 25;
k4n2/ppp1NK1p/2pB2p1/1Q6/3p4/4rpb1/RP3rP1/4q1nb w - - dm 27;
B7/3N1pp1/8/2Bn2P1/2kNpP2/P3Pp1p/1p2pP2/1b2K1n1 w - - dm 28;
8/1ppr4/br6/1pkp4/2p1Qp2/KPp2p2/B1PP1P2/8 w - - dm 62;
4Q1R1/1pRp1rbp/1Pn2k1q/2P2prb/5Pp1/3p1pP1/3P1P1K/6B1 w - - dm 63;
After some Forward Backward of different lines and follow up pondering in multi variant mode, here at depth 43/73:
Or even19 only, which would be shorter than my line after Nd5 above again. After an extra- Backward of the Nfxg4- line: