Search found 167 matches

by Spliffjiffer
Mon Sep 10, 2012 11:46 am
Forum: Computer Chess Club: General Topics
Topic: Colossus of a mate in 7
Replies: 12
Views: 2271

Re: Colossus of a mate in 7.

as i thought...but only one zugzwang... nice... the solution: 1.Qh1 Rc1(well...only move) 2.Qh7 Rc2 3.Qe4! Bd7(Zugzwang which makes the b3 square available for the queen) 4.Qe1 Rc1 5.Qd2 Rc2 6.Qd1 Rc1 7.Qb3# Btw...Zappa Mexico ll without nullmove detection finds it in 2 secs on a pentium e6600 @2,4 ...
by Spliffjiffer
Mon Sep 10, 2012 11:21 am
Forum: Computer Chess Club: General Topics
Topic: Colossus of a mate in 7
Replies: 12
Views: 2271

Re: Colossus of a mate in 7.

well i looked 1 sec on this and im sure there is some zugzwang involved...ill check it anyway....ty
by Spliffjiffer
Mon Sep 10, 2012 10:27 am
Forum: Computer Chess Club: General Topics
Topic: Colossus of a mate in 7
Replies: 12
Views: 2271

Re: Colossus of a mate in 7.

Yes...after 4.Qg2 there are some lines which not end in the Qa8,Qg8# maneuver...ty for clarification. The mainline of Bogoljubow's solution was: 1.d3 cd 2.Rf4 gf 3.Ra4 Bxa4 4.Qg2 a1Q 5.Ng6 fg 6.Qa8 and 7.Qg8# From my human point of view this line is the most obvious (even so for strelka it seems ) T...
by Spliffjiffer
Mon Sep 10, 2012 7:20 am
Forum: Computer Chess Club: General Topics
Topic: Colossus of a mate in 7
Replies: 12
Views: 2271

Colossus of a mate in 7

This is the hardest mateproblem in 7 moves i have ever seen so far. The queen maneuver from g8 over g2 to a8 and back to her initial starting square with mate is just impressive. Efim D. Bogoljubow [D]R5QK/3p1p2/1pbPkB2/4Ppp1/2p4N/2p5/p2P1R1n/8 w - - 0 1 Im sure your engines will find it (at least c...
by Spliffjiffer
Mon Aug 13, 2012 10:22 pm
Forum: Computer Chess Club: General Topics
Topic: Testposition
Replies: 8
Views: 1550

Re: Testposition

Maybe this is an improvement: 16...Be6 17.fe f5 18.g6 Nxg6 19.Qxd8 Rbxd8 20.Bxf5 Rb8(instead of Sb3) 21.Ng5 Nb3 22.Nf7+ Kg8 23.Bg5 Nd4 24.Nd5 Rbe8 25.Nxd6 Nxf5 26. Nxe8 Rxe8 27.Rxf5 Rxe6 Although this is not really forced it seems to me that black has a good edge here. The upcoming Rookending after ...
by Spliffjiffer
Mon Aug 13, 2012 6:06 pm
Forum: Computer Chess Club: General Topics
Topic: Testposition
Replies: 8
Views: 1550

Re: Testposition

Thank You for your quick responses. Sadly i coulnt really improve the line given by Dan: 5:32:59 181 961 875 571 9 107 000 +1,30 Bc8-e6 f5xe6 f6-f5 g5-g6 Ne7xg6 Qh4xd8 Rb8xd8 Be4xf5 Na1-b3 Bc1-g5 Rd8-e8 Nc3-b5 Rf8xf5 Rf1xf5 h7-h6 Nb5-c7 Re8-c8 Rf5-f7 e5-e4 d3xe4 h6xg5 Nh3xg5 Bg7-d4+ Kg1-g2 Bd4-e3 e6...
by Spliffjiffer
Sat Aug 11, 2012 8:13 am
Forum: Computer Chess Club: General Topics
Topic: Testposition
Replies: 8
Views: 1550

Testposition

Hello dear chessfriends here on TalkChess. After i follow this Forum since many years already i am very glad to be here as a new registered user to post and respond here from now on from time to time. I come from Germany and like to greet all chessinterested people all over the world who love this g...