Complex Queen Endgame

[Nordlandia]

First position is possibly winning for white. SF give 1.75 score after serious thought.

[d]4bk1r/1Q2n1p1/7p/p7/8/5P2/PP4PP/6K1 w - - 0 1

[d]r7/1bp1knpp/p7/1p5Q/P7/P2P4/2P2P1P/5K2 w - - 0 25

[d]8/3Q1nk1/p1p2bp1/2P5/Pr5p/7P/5PP1/6K1 w - - 0 42

[d]rn2k3/7p/pp2p2b/8/8/8/PPP3PP/1K1Q4 b q - 0 25

[zullil]

Cfish-dev on first position. Not conclusive!

+1.83 1. b3 h5 2. Qc7 h4 3. Qxa5 h3 4. a4 hxg2 5. Kxg2 Rh6 6. b4 Rg6+ 7. Kf2 Rh6 8. b5 Rh4 9. Qa6 Rb4 10. Qa7 Kf7 11. Kg3 Bxb5 12. axb5 Rxb5 13. Qa2+ Rd5 14. Kg4 Kf6 15. Qb2+ Kf7 16. Qb3 Kf6 17. Qc3+ Kf7 18. h3 Rb5 19. Qc4+ Rd5 20. Kf4 Kf6 21. Qc3+ Kg6 22. Qc7 Kf6 23. Qb6+ Kf7 24. Kg4 Kf8 25. Kg3 Kf7 26. Qb3 Kf8 27. Kf2 g6 28. Qa2 Kf7 29. Kg3 Kf6 30. Qa6+ Kf7 31. Qa7 Rg5+ 32. Kf2 Rf5 33. Qc7 (depth 57, 0:39:42)

[Dann Corbit]

[d]4bk1r/1Q2n1p1/7p/p7/8/5P2/PP4PP/6K1 w - - acd 50; acs 1493; bm b3; ce 185; pm b3; pv b3 h5 Qc7 h4 Qxa5 h3 a4 hxg2 b4 Rh5 b5 Rh4 Kxg2 Rf4 Kg3 Rc4 Kf2 Rh4 Ke1 Rf4 Kd2 Rd4+ Ke3 Rh4 Qa7 Rc4 Qa8 Kf7 Kd2 Rd4+ Ke1 Rb4 Qa5 Rc4 Kf1 Rc1+ Ke2 Rc4 Ke1 Rc1+ Kd2 Rc4 h3 g6 Qa7 Rb4 Qa6 Kf8 Qa5 Rd4+ Kc2 Rf4 Kb2 Rc4 Ka3 Kf7 Kb3 Rf4;
[d]r7/1bp1knpp/p7/1p5Q/P7/P2P4/2P2P1P/5K2 w - - acd 50; acs 2370; bm Qc5+; ce 64; pm Qc5+; pv Qc5+ Ke6 Qxc7 Bd5 Qb6+ Nd6 Qe3+ Kd7 Qd4 Bf7 Qg4+ Ke7 Qxg7 Rc8 Qb2 Be6 Ke1 Rc5 Kd1 Rh5 Qg7+ Nf7 Qc3 Nd6 Qa5 Bc8 axb5 axb5 a4 Bg4+ Kd2 bxa4 Qxa4 Be6 Qa7+ Bd7 Qe3+ Be6 Qg3 Nf5 Qc7+ Ke8 c4 Rh4 Qa7 Kf8 Kc3 Ke8 Qc5 Kf7 Qc7+ Kf6 Qb8 Kf7 Qb7+ Kf6 Qc7 Rh3 Kd2 Rh4 Qd8+ Kf7 Qb6 Rd4 Qc7+ Kf6 Qc6 Kf7 Qf3 Rh4 Kc3 Kf6 Kb4 Rxh2 d4 Rh4 d5 Bf7;
[d]rn2k3/7p/pp2p2b/8/8/8/PPP3PP/1K1Q4 b q - acd 50; acs 1805; bm Ra7; ce -197; pm Ra7; pv Ra7 Qd6 Rd7 Qxe6+ Re7 Qc8+ Kf7 a4 Nd7 Qxa6 Bg7 Qc8 h5 Qc6 Re1+ Ka2 Ke7 Qg6 Be5 Qxh5 Nf6 Qf5 Re4 g4 Rxa4+ Kb3 Ra5 g5 Rb5+ Kc4 Rc5+ Kd3 Nd7 c3 Nf8 Qe4 Ne6 Qh7+ Kd6 h4 b5 Qa7 Bf4 Kc2 Rd5 Kb1 Rc5 Qa6+ Kd7 Qb7+ Kd6 Kc2 Rd5 Qa7 Rd2+ Kb3 Rd5 Kb4 Rd2 Qb6+ Ke7 Qb7+ Bc7 h5 Rxb2+ Ka3 Rd2;
[d]8/3Q1nk1/p1p2bp1/2P5/Pr5p/7P/5PP1/6K1 w - - acd 50; acs 904; bm Kf1; ce -323; pm Kf1; pv Kf1 Rxa4 Qxc6 Ra1+ Ke2 a5 Qa6 a4 c6 a3 c7 Rc1 Qxa3 Rxc7 Kd1 Re7 Qf3 Nd6 g3 Nf5 Qd3 Be5 g4 Nd6 Qe3 Bf6 Qb6 Nf7 f4 g5 fxg5 Nxg5 Qb3 Re8 Qb7+ Nf7 g5 Bxg5 Qb2+ Kg8 Qc2 Re3 Qg6+ Kf8 Qc2 Kg7 Qf5 Rg3 Ke1 Bf6 Qd7 Kg6 Qe8 Rxh3 Qg8+ Bg7 Qe8 Bc3+ Ke2 Kg7 Qe4 Ng5 Qf5 Bf6 Qd7+ Kh6 Qf5;
Last position looks lost.
The imbalances are grotesque, so I am not sure that engines will evaluate these correctly.

[Nordlandia]

I can't see to find a particular position, i had it yesterday but forgot to save it in lichess import.

I have posted the FEN in one of the thread here on talkchess but i can't find it.

It resembles this position. The black knights and king is like the fen but the pawns are on different squares. Anyway i share few more complex endgames. Q vs RNN is not very common in everyday play.

[d]5nk1/1p1r1ppn/p6p/8/2P5/P4P2/1P1Q2PP/6K1 w - - 0 0

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[d]4r3/1p3kpp/p1nQ1n2/8/8/7P/PP3PP1/6K1 w - - 0 30

[d]5rk1/3n1ppp/4pn2/1pQp4/5P2/4PP2/PP4KP/8 w - - 0 30

[d]6k1/1p2r1p1/p1n2n1p/8/2P1P3/7P/PP1Q2P1/6K1 b - - 0 29

[d]8/pppk3p/3q4/5p2/8/7N/PPP3P1/3NRK2 b - - 0 32

[d]5rn1/pp4n1/2p3k1/7p/8/1P6/PQ3PP1/6K1 w - - 0 33

[d]4k3/pp5p/2nrn3/8/2Q1P3/6P1/PP2K3/8 w - - 0 29

[Nordlandia]

I found the position i tried to find earlier today. This position is a great testing position for Queen vs Rook and Two Knights.

[d]5nk1/pp3ppn/8/5P2/3r4/P6P/1PQ2KP1/8 b - - 0 1