Move 24b discussion: Everyone vs stockfish

[MooMoo2]

The poll for move 23 just closed, and the most popular move was Kg3. Stockfish responded with 23...Ne3, and the FEN is:
4r1k1/pp3p1p/5Q2/3p4/8/1N2nPK1/PPP1r1PP/8 w - - 3 24

Game so far: 1.e4 e6 2. d4 d5 3. Nd2 c5 4. Ngf3 Nf6 5. exd5 exd5 6. Bb5+ Bd7 7. Bxd7+ Nbxd7 8. O-O Be7 9. dxc5 Nxc5 10. Nb3 Nce4 11. Nfd4 O-O 12. Nf5 Re8 13. Nxe7+ Rxe7 14. f3 Nd6 15. Bg5 Nc4 16. Bxf6 gxf6 17. Qd4 Qb6 18. Rab1 Qe6 19. Rfe1 Qxe1 20. Rxe1 Rxe1+ 21. Kf2 Rae8 22. Qxf6 R1e2+ 23. Kg3 Ne3

[richs]

Qg5+ as LaurV suggested last move.

[gd_barnes]

Agreed

[LaurV]

Yeah, let's see how SF gets out from the eternal check there....
In fact we can speed up and help Momo, and say we play queen f6-g5-h6 checks as long as SF plays f8--h8.

[WMHalsdorf]

24. Qf5+ Kf8
25. Qh6+ Ke7
26. Kh3 Nxc2 (obvious low depth move)
27. Qh4+ Kd6 (obvious low depth move)
28. Nc1 R2e5 (practically forced)
29. Qxh7

[MooMoo2]

Originally Posted by WMHalsdorf

24. Qf5+ Kf8
25. Qh6+ Ke7
26. Kh3 Nxc2 (obvious low depth move)
27. Qh4+ Kd6 (obvious low depth move)
28. Nc1 R2e5 (practically forced)
29. Qxh7

In case anyone's wondering, playing 25...Ke7?? instead of 25...Kg8 would have resulted in a massive +3.01 pawn advantage for white. Unlike the first variation of the game, black can't avoid 3-move repetition without suffering huge losses. As LaurV said,

Originally Posted by LaurV

Like in this short version (without including repetitions): 23. Kg3 Ne3 24. Qg5+ Kf8 25. Qh6+ Ke7 26 Kh3 and now he can't beat the pawn in g2 because it loses the horse. So, right now, he can't move the lower rock, because he loses the horse (or the rook, if he put it in e1 to keep control the horse, then Qh4+ and the rook is lost), he can't move the king (because white Nc5, possible mate in b8-d8, if for example Kd7, Nc5, etc), he can not move the higher rook (and lose the defense, in fact, having the rooks not on the same line or column is strategically bad for black here), so he can only move pawns, or the horse. So, 26... Nxc2, then - here is the trick - 27. Qh4+(!). Now he either goes back to f8, and we repeat all, or he advances to the middle of the table, where it is at our mercy, we even may win here if he plays so, our queen is extremely mobile there, especially supported by the horse and by the pawn in column f.