Solution of chess problem 80.

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Hello chess fans, do you still remember my last chess problem?

Somewhat belated I would like to present you its solution (including the most critical variations) in the form of a 3Speak video.

I would be curious to know if you like to watch the solutions of my chess riddles as videos like this one or instead of that prefer to read the different variations?
Your feedback is highly appreciated.

By the way I got inspired to create this quiz when playing the following blitz chess game:

[Site "https://lichess.org/L4G6rmOr"]
[Date "2020.10.17"]
[White "SebastianMorlett"]
[Black "jaki01"]
[Result "0-1"]
[WhiteElo "2300"]
[BlackElo "2298"]
[TimeControl "180+0"]
[ECO "A40"]
[Opening "Mikenas Defense"]

1. d4 { [%clk 0:03:00] } Nc6 { [%clk 0:03:00] } { A40 Mikenas Defense } 2. Nf3 { [%clk 0:02:59] } d6 { [%clk 0:02:58] } 3. Bf4 { [%clk 0:02:57] } Bg4 { [%clk 0:02:56] } 4. e3 { [%clk 0:02:56] } e5 { [%clk 0:02:55] } 5. Bg5 { [%clk 0:02:48] } Bxf3 { [%clk 0:02:50] } 6. Bxd8 { [%clk 0:02:44] } Bxd1 { [%clk 0:02:49] } 7. Bxc7 { [%clk 0:02:41] } Bxc2 { [%clk 0:02:48] } 8. Na3 { [%clk 0:02:39] } Bf5 { [%clk 0:02:44] } 9. dxe5 { [%clk 0:02:38] } dxe5 { [%clk 0:02:42] } 10. Bb5 { [%clk 0:02:37] } Bb4+ { [%clk 0:02:40] } 11. Ke2 { [%clk 0:02:35] } Nf6 { [%clk 0:02:34] } 12. Bxe5 { [%clk 0:02:27] } O-O { [%clk 0:02:32] } 13. Bxf6 { [%clk 0:02:22] } gxf6 { [%clk 0:02:32] } 14. Rac1 { [%clk 0:02:13] } Rfd8 { [%clk 0:02:27] } 15. Bxc6 { [%clk 0:02:08] } Bd3+ { [%clk 0:02:25] } 16. Kf3 { [%clk 0:02:05] } bxc6 { [%clk 0:02:22] } 17. Rxc6 { [%clk 0:02:03] } Kg7 { [%clk 0:02:17] } 18. Rhc1 { [%clk 0:01:58] } Rd5 { [%clk 0:02:14] } 19. Rc7 { [%clk 0:01:42] } Rf5+ { [%clk 0:02:12] } 20. Kg4 { [%clk 0:01:37] } Kh6 { [%clk 0:02:00] } 21. f4 { [%clk 0:01:35] } Be4 { [%clk 0:01:56] } 22. h4 { [%clk 0:01:07] } Rg8+ { [%clk 0:01:53] } 23. Kh3 { [%clk 0:01:06] } Bxg2+ { [%clk 0:01:49] } 24. Kh2 { [%clk 0:01:04] } Rh5 { [%clk 0:01:47] } 25. Rxf7 { [%clk 0:01:00] } Be7 { [%clk 0:01:32] } 26. Rxe7 { [%clk 0:00:53] } Bf1 { [%clk 0:01:30] } 27. Rxf1 { [%clk 0:00:21] } Rxh4# { [%clk 0:01:29] } { Black wins by checkmate. } 0-1

Just look at the moves 25. ... Be7 and 26. ... Bf1.

You may ask now why I created a chess problem instead of just presenting the blitz chess game? The reason is simple: in that game 25. ... Be7!? and 26. ... Bf1!? were really creative, nice moves leading to a win, but there were faster ways to enforce a checkmate.
It was really difficult to change the position in a way that made these moves the only solution without any tantamount side variations.

Anyway, it's a nice example were playing real games and creating chess compositions lead to synergy effects: interesting ideas and motives which appear in chess games can be used when inventing chess problems, while my playing skills benefit from the creativity which is necessary to create tricky riddles.

I hope you enjoy the video!


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