Nice study by Troitsky

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acase
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Joined: Wed Mar 15, 2006 1:14 am
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Re: Nice study by Troitsky

Post by acase »

Jouni wrote: ↑Fri Mar 31, 2023 3:05 pm After fxe5 Huntsman thinks it's mate in 20:

1...f4 2.Rxe4 Kf5 3.Rxc4 Kxe5 4.Rd4 Bc6 5.Nxf4 Be4 6.Nxh5 Bg6 7.Ng3 b5 8.h5 Bxh5 9.Nxh5 Kf5 10.c4 Kg5 11.c5 a5 12.Ng3 a4 13.Ne6+ Kf6 14.c6 Kxe6 15.c7 Kf6 16.Rxd3+ Kg5 17.c8Q Kh6 18.Qe6+ Kg5 19.Qf5+ Kh4 20.Bf6#
Using forwards-backwards analysis with Stockfish developement it says mate in 18 after 1.fxe5

52/37 00:08 230,663k 27,767k -M18 1. ... Bd7-c6 2.Nc7-e6 Bc6-e8 3.Ne6-f4 Be8-d7 4.e5-e6 Bd7-c6 5.e6-e7 Bc6-a4 6.Nf4-d5 f5-f4 7.Re3xe4 Kg4-g3 8.Re4xf4 Ba4-d7 9.Nd5-c7 Kg3-h2 10.Rf4-d4 Bd7-c6 11.Rd4-d6 Bc6-e8 12.Nc7xe8 a6-a5 13.Ne8-c7 a5xb4 14.a3xb4 Kh2-h1 15.e7-e8Q Kh1-g1 16.Qe8-e3+ Kg1-h1 17.Ng2-f4 b6-b5 18.Qe3-f3+ Kh1-h2 19.Qf3-g2+
:wink:

And if 1...f4 is played then mate in 15


50/30 00:24 634,414k 25,396k +M15 2.Re3xe4 Kg4-f5 3.e5-e6 Bd7xe6 4.Re4xe6 b6-b5 5.Ng2xf4 Kf5xf4 6.Re6xa6 Kf4-f3 7.Nc7xb5 Kf3-e2 8.Ra6-e6+ Ke2-f3 9.Nb5-d4+ Kf3-f2 10.b4-b5 Kf2-g3 11.b5-b6 Kg3-f2 12.b6-b7 Kf2-g2 13.b7-b8Q Kg2-h1 14.Re6-e3 Kh1-g2 15.Qb8-g3+ Kg2-f1 16.Re3-e1+
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