Émile Leonard Pradignat, Jornal do Brasil, 02/02/1897. Código FEN: 2K5/5p1p/p4B1n/P5p1/1p2pk2/4R1R1/r1p2P2/2n2Q2 w - - 0 1. |
As Brancas jogam e dão xeque-mate em 3 lances!
(White to play and give checkmate in 3 moves!)
PCFilho
Regras para postar comentários:
I. Os comentários devem se ater ao assunto do post, preferencialmente. Pense duas vezes antes de publicar um comentário fora do contexto.
II. Os comentários devem ser relevantes, isto é, devem acrescentar informação útil ao post ou ao debate em questão.
III. Os comentários devem ser sempre respeitosos. É terminantemente proibido debochar, ofender, insultar e/ou caluniar quaisquer pessoas e instituições.
IV. Os nomes dos clubes devem ser escritos sempre da maneira correta. Não serão tolerados apelidos pejorativos para as instituições, sejam quais forem.
V. Não é permitido pedir ou publicar números de telefone/Whatsapp, e-mails, redes sociais, etc.
VI. Respeitem a nossa bela Língua Portuguesa, e evitem escrever em CAIXA ALTA.
Os comentários que não respeitem as regras acima poderão ser excluídos ou não, a critério dos moderadores do blog.
What the hell, Paulo?! This one's got four distinct keys! This problem is super cooked!
ResponderExcluirOK, I'm just going to calm down and break down each key...
1 f3! (probably the intended solution, as it contains a very nice Y-flight setup) (threat 2 fxe4 mate)
1 ... Kf5 2 fxe4++ Ke6 3 Qxa6; 2 ... Kg6 3 Rxg5
1 ... Kxe3 2 fxe4+ Kxe4 3 Qf3; 2 ... Kd2 3 Bxg5
1 ... Kxg3 2 Be5+ Kh4 3 Qh1
Now for the others; each one is a queen move and each threatens Qxe4 mate:
1 Qh1/Qg2/Qe4! Kf5 2 Be7 ~ 3 Qxe4
*sigh* You should probably computer-test these problems before posting them here. I'm disappointed, Paulo. Very disappointed.
Yes, Jake, 1. f3!! was the intended solution for this old problem.
ExcluirToo bad it is indeed cooked... I found this problem so beautiful... I would love to fix it.
PS: I do run every problem through a computer engine. However, the engines I know don't verify if the problem is cooked: they just show one of the solutions. To make sure the problem is not cooked, I would have to manually verify every single line. Which sometimes I do... but some problems would take much much much more time. Do you know a "cookedness-verifying" software to do the job automatically?
Anyway, I promise to put more effort to address this issue in the problems to come.
PPS: the best "cookedness-verifying software" I know up until now is called "Jake Hoover's Brain". :P
ExcluirActually, I used Chess.com's Analysis Board, which uses the Stockfish engine for analysis. Supposedly it's one of the most powerful chess analysis softwares out there. Check it out sometime, it's awesome.
ExcluirI will. Thank you for the hint.
Excluir