Hard Puzzles found on Gameknot

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Dann Corbit
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Re: Hard Puzzles found on Gameknot

Post by Dann Corbit » Sat Jun 20, 2020 7:37 pm

Vinvin wrote:
Sat Jun 20, 2020 6:37 pm
Nordlandia wrote:
Fri Jun 19, 2020 11:21 am
User Moremover on chess.com claims that many of the Puzzles are unsolved.

May be worth to examine further 😉

https://gameknot.com/chess-puzzles.pl?s ... de&m=0&s=9
Are they all "mate in x" problems ?
I have 1271 of the problems and all were mate in x.
I have found many with shorter mates.
I also have many where I did not find a mate as short as the suggested distance.
And about 15 are left unsolved to mate from the 1271 so far.
I guess that there are a lot more problems at the site, but I do not know how to collect them.
I only collected the ones I could find on the pages of the site.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dann Corbit
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Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
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Re: Hard Puzzles found on Gameknot

Post by Dann Corbit » Sat Jun 20, 2020 11:48 pm

Here are the six out of 1271 that I did not solve yet:

Code: Select all

6n1/r1p2p2/1pNp1p2/6pK/2BBk1p1/6P1/1p3P2/3N4 w - - acd 58; bm Nc3+; ce 15396; dm 15; pv Nc3+ Kf5 Nd8 b1=Q Nxb1 Ke4 Nc6 Kf3 Nxa7 Ne7 Nd2+ Kg2 Bxf7 Nf5 Bd5+ Kg1 Bxf6 Kxf2 Kxg5 Ne3 Bd4 Ke2 Bxe3 Kxe3 Kxg4 Ke2 Nb5 Kf2 Nxc7 Ke1 Nc4 Kf2 Nxd6 Ke3 Nc4+ Kd4 Nxb6 Ke5 Kf3 Kd4 g4 Kc5 g5 Kxb6; 
B7/5N2/7Q/2p3B1/5N2/1ppn4/pkp1K3/bb2n3 w - - acd 54; bm Nxd3+; ce 89; dm 20; pv Nxd3+ Nxd3 Nd6 c1=N+ Kf1 Bc2 Nb5 Kb1 Na3+ Kb2 Qa6 Nb4 Qa5 Bd3+ Kf2 Bg6 Bf6 Ncd3+ Kg3 Kc1 Qa7 Nc2 Qa4 Nxa3 Qxb3 Bb2 Qxa2 c4 Bxc3 Bxc3 Qxa3+ Kd2 Qa2+ Nb2 Bd5 Bd3 Qa7 Kc2 Qg1 Bd2 Qd4 Be1+ Kf3 Bb4 Be6 Be1 Qd6 Bd2 Qa6 Bc3 Qb5 Bd2 Bd5 Kc1 Qc5 Kc2 Qa3 Kc1 Qa1+ Kc2 Qa2 Kc1 Qa3 Kc2 Qa1 Bc3 Qa2 Bd4 Qa5 Kc1 Qe1+ Kc2 Qb4 Bc3 Qd6 Bd2 Be6 Nd1 Qa6 Nb2 Qa7 Kd1 Bd5 Kc2 Bf7 Be1 Qa2 Bc3; 
2n5/4nN2/K1p5/2p5/2P3BP/3kBp2/2pPppp1/3N2b1 w - - acd 78; bm Nb2+; ce 0; dm 21; pv Nb2+ Ke4 Na4 Kd3; 
8/2ppK1p1/2pn2pb/p2b2pk/3R2Rn/B2PP2P/P7/5B2 w - - acd 49; bm Bxd6; ce 837; dm 24; pv Bxd6; 
7R/p7/Ppp1B1p1/R1n1B2r/4kP1P/3p1p1P/3prp2/3Kb2N w - - acd 51; bm Ng3+; ce 459; dm 25; pv Ng3+ Ke3 Nf1+ Ke4 Rxc5 bxc5 Rxh5 gxh5 Bc4 Kf5 Bxd3+ Ke6 Bc4+ Kd7 Bxe2 fxe2+ Kxe2 c4 Kd1; 
B7/3N1pp1/8/2Bn2P1/2kNpP2/P3Pp1p/1p2pP2/1b2K1n1 w - - acd 57; bm Bxd5+; ce 185; dm 28; pv Bxd5+ Kxd5 Bb4 Kc4 Ne5+ Kd5 Nb5 Ke6 Nc7+ Kf5 Ne8 Ke6 Nxg7+ Kd5 Ne8 Ke6; 
The two I have not yet verified (but which I expect to be a mate and a cursed mate):

Code: Select all

8/1ppr4/br6/1pkp4/2p1Qp2/KPp2p2/B1PP1P2/8 w - - acd 125; bm d4+; ce 0; dm 62; pv d4+ Kd6 Qe5+ Kc6 Qe6+ Rd6 Qe8+ Rd7 Kb4 Kd6 Qe5+ Kc6 Qe6+ Rd6 Qe8+ Rd7 Bb1 Kd6 Qe5+ Kc6 Qe6+ Rd6 Qe8+ Rd7 Qe6+; 
4Q1R1/1pRp1rbp/1Pn2k1q/2P2prb/5Pp1/3p1pP1/3P1P1K/6B1 w - - acd 127; bm Rxc6+; ce 0; dm 63; pv Rxc6+ dxc6 Qe5+ Kg6 Qe6+ Rf6 Qe8+ Rf7 Kh1 Kf6 Qe5+ Kg6 Qe6+ Rf6 Qe8+ Rf7 Bh2 Kf6 Qe5+ Kg6 Qd6+ Rf6 Qe7 Rf8 Qe6+ Rf6 Qe8+ Rf7 Bg1; 
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

MikeGL
Posts: 958
Joined: Thu Sep 01, 2011 12:49 pm

Re: Hard Puzzles found on Gameknot

Post by MikeGL » Sun Jun 21, 2020 1:13 am

Thanks for that link. Seems there are unsolved puzzles there too.

http://jornalheiros.blogspot.com/p/chess-problems.html
Mate puzzles but some were already solved in comment section of the blog.
Dann Corbit wrote:
Sat Jun 20, 2020 3:24 pm
MikeGL wrote:
Sat Jun 20, 2020 1:03 pm
Here's the possible Mate in 63 and also M62 solutions (using SF and manual analysis)
There's a glitch in M62 puzzle. My interface keeps on reporting 50-move-rule draw, because there's no capture.
Maybe that, or there is a more efficient mate reaching M62 with captures somewhere.



I found prior art for the second but not the first:
http://jornalheiros.blogspot.com/2020/0 ... novic.html
I told my wife that a husband is like a fine wine; he gets better with age. The next day, she locked me in the cellar.

Dann Corbit
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Joined: Wed Mar 08, 2006 7:57 pm
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Re: Hard Puzzles found on Gameknot

Post by Dann Corbit » Sun Jun 21, 2020 1:17 am

Another one bites the dust:

Code: Select all

Searching: 6n1/r1p2p2/1pNp1p2/6pK/2BBk1p1/6P1/1p3P2/3N4 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   +5.79   00:00  152890  Bxb2 
 2   +4.98   00:00   1187K  Bxb2 Ra8 
 3   +8.26   00:00   1783K  Nc3+ Kf5 Nxa7 b1=R 
 4   +7.65   00:00   2270K  Nc3+ Kf5 Nxa7 Ne7 Nab5 
 5   +9.34   00:00   2756K  Nc3+ Kf5 Nxa7 Ne7 Nab5 
 6   +8.10   00:00   3372K  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 
 7   +8.94   00:00   4029K  Nc3+ Kf5 Nxa7 d5 Bxd5 Ne7 Bxf7 
 8   +8.99   00:00   4866K  Nc3+ Kf5 Nxa7 d5 Bxd5 Ne7 Bxf7 c5 Be3 
 9   +9.15   00:00   5616K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 f5 Nc7+ Kd6 
10   +9.25   00:00   6626K  Nc3+ Kf5 Nxa7 d5 Bxd5 Ne7 Bxf7 c5 Be3 Ke5 Nab5 Nf5 Ba2 
11   +8.88   00:00   7921K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 c5 Bxb2 d4 Nc8 Ne7 Nxb6 f5 
12   +9.67   00:00   9221K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Ne7 Nxb6 Nc6 Ba3 
13   +8.98   00:00  14058K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 c5 Bxb2 Ne7 Nc7+ Kd7 Nab5 d4 Ba3 Kc6 Kxg4 Kd7 Be2 Nc6 Nd5 Ne5+ Kf5 
14  +10.00   00:00  18653K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 c5 Bxb2 Ne7 Nc7+ Kd7 Bxf6 c4 Be2 c3 Bxe7 
15  +10.13   00:00  22966K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kd8 Nxb6 Ne7 Bh7 Ke8 Na4 
16  +10.27   00:00  38101K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 c4 Kxg5 Kd7 Kf6 Kc7 Bf5 Kc6 Nxf7 
17  +10.34   00:00  44289K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Kxg4 Kd7 Nfd6 Ke6 Bb1 Kd7 Nc4 Kc6 Nbd6 Kd5 Be4+ Ke6 Ba3 Kd7 Nf5 Nxf5 
18  +10.40   00:00  63192K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 c4 Bh7 b5 Nf5 d4 Nxd4+ Kd7 Bc5 
19  +10.87   00:01 107295K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Nba7+ Kb7 Bh7 Ne7 Nxe7 Kxa7 Kxg4 Kb7 Bd3 Kc7 Nd5+ Kc6 Nxf6 b5 
20  +10.92   00:02 170990K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 c4 Bb4 f6 Nd4 Kc7 Bf5 b5 Kg6 
21  +10.95   00:02 229301K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Nc8 Nxc8 Kxc7 Bf5 c4 Be5+ Kc6 Ne7+ Kc5 Kxg5 b5 Kh4 b4 Kxg4 b3 Kf3 
22  +11.14   00:03 283467K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 b5 Kxg4 Kb6 Kf4 d4 Ke5 d3 Bxd3 c4 Be4 
22  +11.14   00:03 303551K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 b5 Kxg4 Kb6 Kf4 d4 Ke5 d3 Bxd3 c4 Be4 
22  +11.14   00:04 381878K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 b5 Kxg4 Kb6 Kf4 d4 Ke5 d3 Bxd3 c4 Be4 
22  +11.14   00:05 410251K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 b5 Kxg4 Kb6 Kf4 d4 Ke5 d3 Bxd3 c4 Be4 
23  +11.32   00:05 447341K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kd7 Bf6 Kd6 Bxg5 Kc7 Bf4+ Kb7 Nb5 Kc6 Nd6 c4 Kxg4 b5 Nxf7 b4 f3 b3 Ne5+ Kb5 Bf5 c3 Be6 Kc5 Bg5 
23  +11.32   00:06 515704K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kd7 Bf6 Kd6 Bxg5 Kc7 Bf4+ Kb7 Nb5 Kc6 Nd6 c4 Kxg4 b5 Nxf7 b4 f3 b3 Ne5+ Kb5 Bf5 c3 Be6 Kc5 Bg5 
23  +11.32   00:09 764690K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kd7 Bf6 Kd6 Bxg5 Kc7 Bf4+ Kb7 Nb5 Kc6 Nd6 c4 Kxg4 b5 Nxf7 b4 f3 b3 Ne5+ Kb5 Bf5 c3 Be6 Kc5 Bg5 
23  +11.32   00:09 780205K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kd7 Bf6 Kd6 Bxg5 Kc7 Bf4+ Kb7 Nb5 Kc6 Nd6 c4 Kxg4 b5 Nxf7 b4 f3 b3 Ne5+ Kb5 Bf5 c3 Be6 Kc5 Bg5 
24  +11.81   00:10 804639K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Ng8 Be5 Ne7 Nab5 Kc6 Bf6 Nc8 Kxg5 Nd6 Nxd6 Kxd6 Nb5+ Kc6 Bd3 c4 Nd4+ Kc5 Bf5 b5 Nc2 Kc6 
24  +11.81   00:10 843631K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Ng8 Be5 Ne7 Nab5 Kc6 Bf6 Nc8 Kxg5 Nd6 Nxd6 Kxd6 Nb5+ Kc6 Bd3 c4 Nd4+ Kc5 Bf5 b5 Nc2 Kc6 
24  +11.81   00:11 957177K  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Ng8 Be5 Ne7 Nab5 Kc6 Bf6 Nc8 Kxg5 Nd6 Nxd6 Kxd6 Nb5+ Kc6 Bd3 c4 Nd4+ Kc5 Bf5 b5 Nc2 Kc6 
24  +11.81   00:14   1191M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Ng8 Be5 Ne7 Nab5 Kc6 Bf6 Nc8 Kxg5 Nd6 Nxd6 Kxd6 Nb5+ Kc6 Bd3 c4 Nd4+ Kc5 Bf5 b5 Nc2 Kc6 
25  +12.19   00:15   1261M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Be4 Kc4 Kf3 Kc3 Nd6 Kb3 Bf6 Ka4 g4 b5 g5 
25  +12.19   00:21   1752M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Be4 Kc4 Kf3 Kc3 Nd6 Kb3 Bf6 Ka4 g4 b5 g5 
25  +12.19   00:22   1856M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Be4 Kc4 Kf3 Kc3 Nd6 Kb3 Bf6 Ka4 g4 b5 g5 
25  +12.19   00:23   1908M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Be4 Kc4 Kf3 Kc3 Nd6 Kb3 Bf6 Ka4 g4 b5 g5 
26  +12.49   00:24   1971M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Kd8 Bxf7 Ne7 Nxe7 Kxe7 Bc4 Kf8 Kxg4 Kg7 Kf5 g4 Nc7 Kh6 Nd5 d3 Bxd3 
26  +12.49   00:28   2341M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Kd8 Bxf7 Ne7 Nxe7 Kxe7 Bc4 Kf8 Kxg4 Kg7 Kf5 g4 Nc7 Kh6 Nd5 d3 Bxd3 
26  +12.49   00:31   2549M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Kd8 Bxf7 Ne7 Nxe7 Kxe7 Bc4 Kf8 Kxg4 Kg7 Kf5 g4 Nc7 Kh6 Nd5 d3 Bxd3 
26  +12.49   00:33   2795M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Kd8 Bxf7 Ne7 Nxe7 Kxe7 Bc4 Kf8 Kxg4 Kg7 Kf5 g4 Nc7 Kh6 Nd5 d3 Bxd3 
27  +12.84   00:35   2905M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Nf5 Kd7 Kxg4 Ke6 Kxg5 Ke5 Bd3 c4 Be2 Ke6 Bf6 Kd7 Nd4 c3 Bg4+ Kd6 Nc2 
27  +12.84   00:41   3402M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Nf5 Kd7 Kxg4 Ke6 Kxg5 Ke5 Bd3 c4 Be2 Ke6 Bf6 Kd7 Nd4 c3 Bg4+ Kd6 Nc2 
27  +12.84   00:45   3749M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Nf5 Kd7 Kxg4 Ke6 Kxg5 Ke5 Bd3 c4 Be2 Ke6 Bf6 Kd7 Nd4 c3 Bg4+ Kd6 Nc2 
27  +12.84   00:54   4536M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Nf5 Kd7 Kxg4 Ke6 Kxg5 Ke5 Bd3 c4 Be2 Ke6 Bf6 Kd7 Nd4 c3 Bg4+ Kd6 Nc2 
28  +13.13   00:56   4706M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Kxg4 Kd7 Nf5 Kc6 Kxg5 Kb5 Kg4 Kc6 Kf4 Kb5 Nd6+ Kb4 Nxf7 d4 g4 Kc3 g5 b5 Ne5 c4 g6 
28  +13.13   01:04   5391M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Kxg4 Kd7 Nf5 Kc6 Kxg5 Kb5 Kg4 Kc6 Kf4 Kb5 Nd6+ Kb4 Nxf7 d4 g4 Kc3 g5 b5 Ne5 c4 g6 
28  +13.13   01:14   6252M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Kxg4 Kd7 Nf5 Kc6 Kxg5 Kb5 Kg4 Kc6 Kf4 Kb5 Nd6+ Kb4 Nxf7 d4 g4 Kc3 g5 b5 Ne5 c4 g6 
28  +13.13   01:16   6383M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kc7 Kxg4 Kd7 Nf5 Kc6 Kxg5 Kb5 Kg4 Kc6 Kf4 Kb5 Nd6+ Kb4 Nxf7 d4 g4 Kc3 g5 b5 Ne5 c4 g6 
29  +13.58   01:18   6531M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Ba2 f6 Bb1 Kb4 Bxf6 Kc3 Be4 b5 Kf4 Kd2 g4 d3 g5 Ke2 g6 
29  +13.58   01:34   7887M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Ba2 f6 Bb1 Kb4 Bxf6 Kc3 Be4 b5 Kf4 Kd2 g4 d3 g5 Ke2 g6 
29  +13.58   01:38   8310M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Ba2 f6 Bb1 Kb4 Bxf6 Kc3 Be4 b5 Kf4 Kd2 g4 d3 g5 Ke2 g6 
29  +13.58   01:52   9472M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 Ne7 Nc7+ Kd7 Bxf6 Kxc7 Bxe7 Kb7 Nb5 Kc6 Nd6 Kd7 Nf5 Kc6 Kxg5 Kb5 Kxg4 d4 Ba2 f6 Bb1 Kb4 Bxf6 Kc3 Be4 b5 Kf4 Kd2 g4 d3 g5 Ke2 g6 
30  +13.91   01:57   9870M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Ke8 Kxg4 Kf8 Nbd6 Ne7 Nxe7 Kxe7 Nc8+ Kd7 Nxb6+ Kc7 Na4 Kd6 Ba3 Ke5 Nxc5 Kd6 Kf5 Kc6 Kxf6 g4 Bxf7 Kb5 
30  +13.91   02:26  12342M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Ke8 Kxg4 Kf8 Nbd6 Ne7 Nxe7 Kxe7 Nc8+ Kd7 Nxb6+ Kc7 Na4 Kd6 Ba3 Ke5 Nxc5 Kd6 Kf5 Kc6 Kxf6 g4 Bxf7 Kb5 
30  +13.91   02:32  12903M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Ke8 Kxg4 Kf8 Nbd6 Ne7 Nxe7 Kxe7 Nc8+ Kd7 Nxb6+ Kc7 Na4 Kd6 Ba3 Ke5 Nxc5 Kd6 Kf5 Kc6 Kxf6 g4 Bxf7 Kb5 
30  +13.91   03:35  18265M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Kc6 Bd3 Kb7 Ncd6+ Kc6 Nf5 Kd7 Bc4 Ke8 Kxg4 Kf8 Nbd6 Ne7 Nxe7 Kxe7 Nc8+ Kd7 Nxb6+ Kc7 Na4 Kd6 Ba3 Ke5 Nxc5 Kd6 Kf5 Kc6 Kxf6 g4 Bxf7 Kb5 
31  +14.98   03:40  18687M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Nf3 Be3 Kb7 Nd1 Kc6 Ne7+ Kb5 Nxb2 Kb4 Nd5+ Kb3 Nd3 Kc4 Nxf6 Nh2 Kxg5 Kc3 Nd5+ Kc4 Be4 Nf1 Bf4 Nh2 Nf6 Kc3 Kf5 Nf3 Bxd6 Nd4+ Kxg4 Kd2 Bf4+ Kd1 f3 Ke2 
31  +14.98   04:07  21022M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Nf3 Be3 Kb7 Nd1 Kc6 Ne7+ Kb5 Nxb2 Kb4 Nd5+ Kb3 Nd3 Kc4 Nxf6 Nh2 Kxg5 Kc3 Nd5+ Kc4 Be4 Nf1 Bf4 Nh2 Nf6 Kc3 Kf5 Nf3 Bxd6 Nd4+ Kxg4 Kd2 Bf4+ Kd1 f3 Ke2 
31  +14.98   04:36  23433M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Nf3 Be3 Kb7 Nd1 Kc6 Ne7+ Kb5 Nxb2 Kb4 Nd5+ Kb3 Nd3 Kc4 Nxf6 Nh2 Kxg5 Kc3 Nd5+ Kc4 Be4 Nf1 Bf4 Nh2 Nf6 Kc3 Kf5 Nf3 Bxd6 Nd4+ Kxg4 Kd2 Bf4+ Kd1 f3 Ke2 
31  +14.98   05:05  25904M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Nf3 Be3 Kb7 Nd1 Kc6 Ne7+ Kb5 Nxb2 Kb4 Nd5+ Kb3 Nd3 Kc4 Nxf6 Nh2 Kxg5 Kc3 Nd5+ Kc4 Be4 Nf1 Bf4 Nh2 Nf6 Kc3 Kf5 Nf3 Bxd6 Nd4+ Kxg4 Kd2 Bf4+ Kd1 f3 Ke2 
32  +15.50   05:23  27460M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 Ng6 Nb5 Kc8 Kxg5 Nf8 Bxc4 f3 Bxf7 Kb7 Bd5+ Ka6 Nd4 Ka5 Nc3 Nd7 Bxf3 Ka6 Ne4 
32  +15.50   06:02  30762M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 Ng6 Nb5 Kc8 Kxg5 Nf8 Bxc4 f3 Bxf7 Kb7 Bd5+ Ka6 Nd4 Ka5 Nc3 Nd7 Bxf3 Ka6 Ne4 
32  +15.50   06:09  31438M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 Ng6 Nb5 Kc8 Kxg5 Nf8 Bxc4 f3 Bxf7 Kb7 Bd5+ Ka6 Nd4 Ka5 Nc3 Nd7 Bxf3 Ka6 Ne4 
32  +15.50   07:37  38900M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 Ng6 Nb5 Kc8 Kxg5 Nf8 Bxc4 f3 Bxf7 Kb7 Bd5+ Ka6 Nd4 Ka5 Nc3 Nd7 Bxf3 Ka6 Ne4 
33  +15.49   08:02  41019M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 c3 Nxc3 Nc8 Kxg5 Nb6 Bb5 f6+ Kg6 Nd7 Kf5 Kc8 Ne6 Nb8 
33  +15.49   09:00  45970M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 c3 Nxc3 Nc8 Kxg5 Nb6 Bb5 f6+ Kg6 Nd7 Kf5 Kc8 Ne6 Nb8 
33  +15.49   09:36  49130M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 c3 Nxc3 Nc8 Kxg5 Nb6 Bb5 f6+ Kg6 Nd7 Kf5 Kc8 Ne6 Nb8 
33  +15.49   10:13  52270M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=Q Bxb1 c5 Bb2 d4 Nc8 Kd7 Bf5+ Ke8 Nxb6 Ne7 Bxg4 Kd8 Na4 f5 Be2 c4 Nxd4 f4 g4 c3 Nxc3 Nc8 Kxg5 Nb6 Bb5 f6+ Kg6 Nd7 Kf5 Kc8 Ne6 Nb8 
34  +17.31   10:22  53023M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=N Bxb1 c5 Bb2 f5 Nc7+ Kd6 Nab5+ Kc6 Bxf5 Ne7 Bxg4 f5 Be2 f4 g4 d4 Kxg5 f3 Bxf3+ Kd7 Be2 Kd8 Kf6 Ng8+ Ke6 Ne7 g5 Ng6 Kf5 Nh4+ Kf6 Kc8 Bd3 Kd7 
34  +17.31   12:57  66490M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=N Bxb1 c5 Bb2 f5 Nc7+ Kd6 Nab5+ Kc6 Bxf5 Ne7 Bxg4 f5 Be2 f4 g4 d4 Kxg5 f3 Bxf3+ Kd7 Be2 Kd8 Kf6 Ng8+ Ke6 Ne7 g5 Ng6 Kf5 Nh4+ Kf6 Kc8 Bd3 Kd7 
34  +17.31   13:52  71262M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=N Bxb1 c5 Bb2 f5 Nc7+ Kd6 Nab5+ Kc6 Bxf5 Ne7 Bxg4 f5 Be2 f4 g4 d4 Kxg5 f3 Bxf3+ Kd7 Be2 Kd8 Kf6 Ng8+ Ke6 Ne7 g5 Ng6 Kf5 Nh4+ Kf6 Kc8 Bd3 Kd7 
34  +17.31   14:54  76465M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=N Bxb1 c5 Bb2 f5 Nc7+ Kd6 Nab5+ Kc6 Bxf5 Ne7 Bxg4 f5 Be2 f4 g4 d4 Kxg5 f3 Bxf3+ Kd7 Be2 Kd8 Kf6 Ng8+ Ke6 Ne7 g5 Ng6 Kf5 Nh4+ Kf6 Kc8 Bd3 Kd7 
35  +18.57   15:22  78874M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 d5 Nxd5 Nc5 Bf5 Kc6 Nbc3 Nb3 Ne7+ Kd6 Ncd5 Kc5 Bd3 Kd6 Bf6 Nc5 Bf5 Na4 Nc3 Nb6 Bd4 Nc4 Ncd5 
35  +18.57   18:33  95511M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 d5 Nxd5 Nc5 Bf5 Kc6 Nbc3 Nb3 Ne7+ Kd6 Ncd5 Kc5 Bd3 Kd6 Bf6 Nc5 Bf5 Na4 Nc3 Nb6 Bd4 Nc4 Ncd5 
35  +18.57   20:15 104402M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 d5 Nxd5 Nc5 Bf5 Kc6 Nbc3 Nb3 Ne7+ Kd6 Ncd5 Kc5 Bd3 Kd6 Bf6 Nc5 Bf5 Na4 Nc3 Nb6 Bd4 Nc4 Ncd5 
35  +18.57   22:57 118147M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 d5 Nxd5 Nc5 Bf5 Kc6 Nbc3 Nb3 Ne7+ Kd6 Ncd5 Kc5 Bd3 Kd6 Bf6 Nc5 Bf5 Na4 Nc3 Nb6 Bd4 Nc4 Ncd5 
36  +22.45   23:00 118373M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 d3 Bxd3 Na7 Nd6+ Kb8 f5 Nc8 Nd7+ Kc7 Nb5+ Kb7 f6 c4 Bxc4 g3 fxg3 Na7 Nxa7 
36  +22.45   26:30 136412M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 d3 Bxd3 Na7 Nd6+ Kb8 f5 Nc8 Nd7+ Kc7 Nb5+ Kb7 f6 c4 Bxc4 g3 fxg3 Na7 Nxa7 
36  +22.45   30:39 157157M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 d3 Bxd3 Na7 Nd6+ Kb8 f5 Nc8 Nd7+ Kc7 Nb5+ Kb7 f6 c4 Bxc4 g3 fxg3 Na7 Nxa7 
36  +22.45   32:57 168566M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=R Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 d3 Bxd3 Na7 Nd6+ Kb8 f5 Nc8 Nd7+ Kc7 Nb5+ Kb7 f6 c4 Bxc4 g3 fxg3 Na7 Nxa7 
37  +28.13   33:10 169698M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 Na7 Bd5+ Ka6 Nc7+ Ka5 f5 d3 f6 d2 Bc3+ Ka4 Bxd2 Nc6 Nxc6 c4 f7 Kb3 f8=Q Kc2 Qb4 
37  +28.13   37:46 193106M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 Na7 Bd5+ Ka6 Nc7+ Ka5 f5 d3 f6 d2 Bc3+ Ka4 Bxd2 Nc6 Nxc6 c4 f7 Kb3 f8=Q Kc2 Qb4 
37  +28.13   41:14 210719M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 Na7 Bd5+ Ka6 Nc7+ Ka5 f5 d3 f6 d2 Bc3+ Ka4 Bxd2 Nc6 Nxc6 c4 f7 Kb3 f8=Q Kc2 Qb4 
37  +28.13   42:28 217055M  Nc3+ Kf5 Nxa7 d5 Bd3+ Ke6 Ncb5 b1=B Bxb1 c5 Bb2 d4 Nc8 f5 Kxg5 f4 gxf4 Kd5 Bd3 Kc6 Bc4 Kb7 Ncd6+ Kc6 Nxf7 Ne7 Ne5+ Kb7 Kf6 Nc8 Ke6 Na7 Bd5+ Ka6 Nc7+ Ka5 f5 d3 f6 d2 Bc3+ Ka4 Bxd2 Nc6 Nxc6 c4 f7 Kb3 f8=Q Kc2 Qb4 
38  +55.05   42:30 217191M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 Nc5 Bf5 Kb6 Bf6 Ka5 Nc3 Kb4 Nc8 Nb3 Nxd6 Na5 Be4 
38  +55.05   45:18 231569M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 Nc5 Bf5 Kb6 Bf6 Ka5 Nc3 Kb4 Nc8 Nb3 Nxd6 Na5 Be4 
38  +55.05   49:32 252963M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 Nc5 Bf5 Kb6 Bf6 Ka5 Nc3 Kb4 Nc8 Nb3 Nxd6 Na5 Be4 
38  +55.05   57:54 294509M  Nc3+ Kf5 Nxa7 Ne7 Nab5 Nc6 Bd3+ Ke6 Nxc7+ Kd7 Bxb6 Ne5 Bf5+ Kc6 N7d5 Kb7 Bd4 Nf3 Bxf6 Nd2 Ne7 Kb8 Kxg4 Ka7 Bd3 Kb7 Nb1 Nb3 Bxb2 Nc5 Bf5 Kb6 Bf6 Ka5 Nc3 Kb4 Nc8 Nb3 Nxd6 Na5 Be4 
39     #15   57:55 294546M  Nc3+ Kf5 f3 gxf3 Be3 Nh6 Nd4+ Ke5 Nxf3+ Kf5 Nd4+ Ke5 Nc6+ Kf5 Bd4 Ng8 Bd5 g4 Nd8 b1=Q Bc6 Qe1 Bd7+ Qe6 Nxe6 fxe6 Bb5 Ne7 Bd3+ 
39     #15 1:02:13 316550M  Nc3+ Kf5 f3 gxf3 Be3 Nh6 Nd4+ Ke5 Nxf3+ Kf5 Nd4+ Ke5 Nc6+ Kf5 Bd4 Ng8 Bd5 g4 Nd8 b1=Q Bc6 Qe1 Bd7+ Qe6 Nxe6 fxe6 Bb5 Ne7 Bd3+ 
39     #15 1:06:14 336595M  Nc3+ Kf5 f3 gxf3 Be3 Nh6 Nd4+ Ke5 Nxf3+ Kf5 Nd4+ Ke5 Nc6+ Kf5 Bd4 Ng8 Bd5 g4 Nd8 b1=Q Bc6 Qe1 Bd7+ Qe6 Nxe6 fxe6 Bb5 Ne7 Bd3+ 
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dann Corbit
Posts: 11510
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
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Re: Hard Puzzles found on Gameknot

Post by Dann Corbit » Sun Jun 21, 2020 1:35 am

They are dropping like flies:

Code: Select all

Searching: B7/5N2/7Q/2p3B1/5N2/1ppn4/pkp1K3/bb2n3 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   -1.45   00:00   1131K  Nxd3+ Nxd3 
 2   +0.63   00:00   1628K  Nd5 c1=N+ Bxc1+ Nxc1+ Kxe1 
 3   +0.96   00:00   2071K  Nd5 c1=R Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Bc2 
 4   +1.01   00:00   2951K  Nd5 c1=R Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 
 5   +0.00   00:00   3212K  Nxd3+ Nxd3 Nd6 c1=N+ Ke3 Bc2 Nc4+ Kb1 
 6   +0.73   00:00   3524K  Nd5 c1=R Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 
 7   +0.99   00:00   4313K  Nd5 c1=R Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Bc2 Nxc3 
 8   +0.54   00:00   5240K  Nd5 c1=B Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ Kf3 Be4+ Kxe4 Kb1 Qf6 Bb2 Nxc3+ Bxc3 Qxc3 
 9   +0.56   00:00   6248K  Nd5 c1=R Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ Kf3 Be4+ Kxe4 Kb1 Ne5 Bb2 
10   +0.00   00:00   7211K  Nd5 c1=B Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
11   +0.00   00:00   8276K  Nd5 c1=B Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
12   +0.00   00:00   9891K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
13   +0.00   00:00  10969K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
14   +0.00   00:00  12170K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
15   +0.00   00:00  13983K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
16   +0.00   00:00  25306K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
17   +0.00   00:00  35255K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
18   +0.00   00:00  36604K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
19   +0.00   00:00  48628K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
20   +0.00   00:01  70048K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
21   +0.00   00:02 147336K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
22   +0.00   00:03 256379K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
22   +0.00   00:03 268999K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
22   +0.00   00:04 288148K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
22   +0.00   00:06 489569K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
23   +0.00   00:07 505148K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
23   +0.00   00:07 534717K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
23   +0.00   00:07 553743K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
23   +0.00   00:08 613579K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
24   +0.00   00:09 657329K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
24   +0.00   00:09 690830K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
24   +0.00   00:10 706704K  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
24   +0.00   00:23   1691M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
25   +0.00   00:24   1744M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
25   +0.00   00:24   1753M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
25   +0.00   00:24   1764M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
25   +0.00   00:25   1778M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
26   +0.00   00:28   2047M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
26   +0.00   00:29   2110M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
26   +0.00   00:29   2161M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
26   +0.00   01:06   4790M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
27   +0.00   01:06   4807M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
27   +0.00   01:07   4837M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
27   +0.00   01:07   4853M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
27   +0.00   02:13   9722M  Nd5 c1=Q Bxc1+ Nxc1+ Kxe1 Nd3+ Ke2 Nc1+ 
28     #20   02:13   9742M  Nxd3+ Nxd3 Bc1+ Nxc1+ Qxc1+ Kxc1 Ne5 Kb2 Nc4+ Kc1 Bd5 b2 Kf2 Kd1 Bf3+ Kc1 Bc6 Kd1 Ba4 Kc1 Bb5 Kd1 Ne3+ Kd2 Nf1+ Kd1 Be2+ Kc1 Ne3 Kd2 Nc4+ Kc1 Na5 c4 Bxc4 Kd1 Be2+ Kd2 Nb3+ 
28     #20   02:13   9759M  Nxd3+ Nxd3 Bc1+ Nxc1+ Qxc1+ Kxc1 Ne5 Kb2 Nc4+ Kc1 Bd5 b2 Kf2 Kd1 Bf3+ Kc1 Bc6 Kd1 Ba4 Kc1 Bb5 Kd1 Ne3+ Kd2 Nf1+ Kd1 Be2+ Kc1 Ne3 Kd2 Nc4+ Kc1 Na5 c4 Bxc4 Kd1 Be2+ Kd2 Nb3+ 
28     #20   02:13   9779M  Nxd3+ Nxd3 Bc1+ Nxc1+ Qxc1+ Kxc1 Ne5 Kb2 Nc4+ Kc1 Bd5 b2 Kf2 Kd1 Bf3+ Kc1 Bc6 Kd1 Ba4 Kc1 Bb5 Kd1 Ne3+ Kd2 Nf1+ Kd1 Be2+ Kc1 Ne3 Kd2 Nc4+ Kc1 Na5 c4 Bxc4 Kd1 Be2+ Kd2 Nb3+ 
28     #20   04:23  19524M  Nxd3+ Nxd3 Bc1+ Nxc1+ Qxc1+ Kxc1 Ne5 Kb2 Nc4+ Kc1 Bd5 b2 Kf2 Kd1 Bf3+ Kc1 Bc6 Kd1 Ba4 Kc1 Bb5 Kd1 Ne3+ Kd2 Nf1+ Kd1 Be2+ Kc1 Ne3 Kd2 Nc4+ Kc1 Na5 c4 Bxc4 Kd1 Be2+ Kd2 Nb3+ 
29     #20   04:24  19542M  Nxd3+ Nxd3 Bc1+ Nxc1+ Qxc1+ Kxc1 Ne5 Kb2 Nc4+ Kc1 Bd5 b2 Kf2 Kd1 Bf3+ Kc1 Bc6 Kd1 Ba4 Kc1 Bb5 Kd1 Ne3+ Kd2 Nf1+ Kd1 Be2+ Kc1 Ne3 Kd2 Nc4+ Kc1 Na5 c4 Bxc4 Kd1 Be2+ Kd2 Nb3+ 
29     #20   04:24  19562M  Nxd3+ Nxd3 Bc1+ Nxc1+ Qxc1+ Kxc1 Ne5 Kb2 Nc4+ Kc1 Bd5 b2 Kf2 Kd1 Bf3+ Kc1 Bc6 Kd1 Ba4 Kc1 Bb5 Kd1 Ne3+ Kd2 Nf1+ Kd1 Be2+ Kc1 Ne3 Kd2 Nc4+ Kc1 Na5 c4 Bxc4 Kd1 Be2+ Kd2 Nb3+ 
29     #20   04:24  19583M  Nxd3+ Nxd3 Bc1+ Nxc1+ Qxc1+ Kxc1 Ne5 Kb2 Nc4+ Kc1 Bd5 b2 Kf2 Kd1 Bf3+ Kc1 Bc6 Kd1 Ba4 Kc1 Bb5 Kd1 Ne3+ Kd2 Nf1+ Kd1 Be2+ Kc1 Ne3 Kd2 Nc4+ Kc1 Na5 c4 Bxc4 Kd1 Be2+ Kd2 Nb3+ 
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Vinvin
Posts: 4752
Joined: Thu Mar 09, 2006 8:40 am
Full name: Vincent Lejeune

Re: Hard Puzzles found on Gameknot

Post by Vinvin » Sun Jun 21, 2020 1:45 am

Dann Corbit wrote:
Sat Jun 20, 2020 11:48 pm
Here are the six out of 1271 that I did not solve yet:

Code: Select all

6n1/r1p2p2/1pNp1p2/6pK/2BBk1p1/6P1/1p3P2/3N4 w - - acd 58; bm Nc3+; ce 15396; dm 15; pv Nc3+ Kf5 Nd8 b1=Q Nxb1 Ke4 Nc6 Kf3 Nxa7 Ne7 Nd2+ Kg2 Bxf7 Nf5 Bd5+ Kg1 Bxf6 Kxf2 Kxg5 Ne3 Bd4 Ke2 Bxe3 Kxe3 Kxg4 Ke2 Nb5 Kf2 Nxc7 Ke1 Nc4 Kf2 Nxd6 Ke3 Nc4+ Kd4 Nxb6 Ke5 Kf3 Kd4 g4 Kc5 g5 Kxb6; 
The first position with Crystal_20200526:

Code: Select all

FEN: 6n1/r1p2p2/1pNp1p2/6pK/2BBk1p1/6P1/1p3P2/3N4 w - - 0 1

Crystal_20200526:
...
 37/71+	09:58	5 835 309 554	9 758 010	+15,63	1.Nc3+
 37/78+	12:40	7 288 442 821	9 584 885	+M15	1.Nc3+
 37/78	12:42	7 311 345 257	9 582 554	+M15	1.Nc3+ Kf5 2.f3 gxf3 3.Be3 Nh6 4.Nd4+ Ke5 5.Nxf3+ Kf5 6.Nd4+ Ke5 7.Nc6+ Kf5 8.Bd4 Ng8 9.Bd5 g4 10.Nd8 b1Q 11.Bc6 Qe1 12.Bd7+ Qe6 13.Nxe6 fxe6 14.Bb5 d5 15.Bd3+
 38/29	12:57	7 444 837 933	9 573 519	+M15	1.Nc3+ Kf5 2.f3 gxf3 3.Be3 Nh6 4.Nd4+ Ke5 5.Nxf3+ Kf5 6.Nd4+ Ke5 7.Nc6+ Kf5 8.Bd4 Ng8 9.Bd5 g4 10.Nd8 b1Q 11.Bc6 Qe1 12.Bd7+ Qe6 13.Nxe6 fxe6 14.Bb5 d5 15.Bd3+
 39/35	13:26	7 699 617 994	9 552 058	+M15	1.Nc3+ Kf5 2.f3 gxf3 3.Be3 Nh6 4.Nd4+ Ke5 5.Nxf3+ Kf5 6.Nd4+ Ke5 7.Nc6+ Kf5 8.Bd4 Ng8 9.Bd5 g4 10.Nd8 b1Q 11.Bc6 Qe1 12.Bd7+ Qe6 13.Nxe6 fxe6 14.Bb5 d5 15.Bd3+

Dann Corbit
Posts: 11510
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: Hard Puzzles found on Gameknot

Post by Dann Corbit » Sun Jun 21, 2020 1:58 am

I should have used Crystal. You solved it much faster than I did.
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dann Corbit
Posts: 11510
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: Hard Puzzles found on Gameknot

Post by Dann Corbit » Sun Jun 21, 2020 2:26 am

Code: Select all

Searching: 2n5/4nN2/K1p5/2p5/2P3BP/3kBp2/2pPppp1/3N2b1 w - - 0 1
infinite: 0 time: 0 increment: 0 moves to go: 0

 1   -8.96   00:00   36577  Nb2+ Ke4 
 2   +0.00   00:00  780317  Nb2+ Ke4 Na4 
 3   +0.00   00:00   1353K  Nb2+ Ke4 Na4 Kd3 
 4   +0.00   00:00   2166K  Nb2+ Ke4 Na4 Kd3 
 5   +0.00   00:00   2859K  Nb2+ Ke4 Na4 Kd3 
 6   +0.00   00:00   3517K  Nb2+ Ke4 Na4 Kd3 
 7   +0.00   00:00   4293K  Nb2+ Ke4 Na4 Kd3 
 8   +0.00   00:00   5050K  Nb2+ Ke4 Na4 Kd3 
 9   +0.00   00:00   6870K  Nb2+ Ke4 Na4 Kd3 
10   +0.00   00:00   8846K  Nb2+ Ke4 Na4 Kd3 
11   +0.00   00:00  12577K  Nb2+ Ke4 Na4 Kd3 
12   +0.00   00:00  17918K  Nb2+ Ke4 Na4 Kd3 
13   +0.00   00:00  24253K  Nb2+ Ke4 Na4 Kd3 
14   +0.00   00:00  50920K  Nb2+ Ke4 Na4 Kd3 
15   +0.00   00:01  97096K  Nb2+ Ke4 Na4 Kd3 
16   +0.00   00:02 209627K  Nb2+ Ke4 Na4 Kd3 
17   +0.00   00:03 247076K  Nb2+ Ke4 Na4 Kd3 
17   +0.00   00:03 306281K  Nb2+ Ke4 Na4 Kd3 
17   +0.00   00:05 450000K  Nb2+ Ke4 Na4 Kd3 
18   +0.00   00:05 452929K  Nb2+ Ke4 Na4 Kd3 
18   +0.00   00:07 575403K  Nb2+ Ke4 Na4 Kd3 
18   +0.00   00:07 619040K  Nb2+ Ke4 Na4 Kd3 
18   +0.00   00:09 754297K  Nb2+ Ke4 Na4 Kd3 
19   +0.00   00:09 757177K  Nb2+ Ke4 Na4 Kd3 
19   +0.00   00:10 847385K  Nb2+ Ke4 Na4 Kd3 
19   +0.00   00:13   1019M  Nb2+ Ke4 Na4 Kd3 
19   +0.00   00:16   1323M  Nb2+ Ke4 Na4 Kd3 
20   +0.00   00:16   1325M  Nb2+ Ke4 Na4 Kd3 
20   +0.00   00:20   1600M  Nb2+ Ke4 Na4 Kd3 
20   +0.00   00:37   2886M  Nb2+ Ke4 Na4 Kd3 
20   +0.00   00:52   3963M  Nb2+ Ke4 Na4 Kd3 
21   +0.00   00:52   3965M  Nb2+ Ke4 Na4 Kd3 
21   +0.00   00:57   4378M  Nb2+ Ke4 Na4 Kd3 
21   +0.00   01:14   5627M  Nb2+ Ke4 Na4 Kd3 
21   +0.00   01:26   6459M  Nb2+ Ke4 Na4 Kd3 
22   +0.00   01:26   6465M  Nb2+ Ke4 Na4 Kd3 
22   +0.00   01:56   8661M  Nb2+ Ke4 Na4 Kd3 
22   +0.00   02:46  12238M  Nb2+ Ke4 Na4 Kd3 
22   +0.00   03:29  15269M  Nb2+ Ke4 Na4 Kd3 
23   +0.00   03:29  15275M  Nb2+ Ke4 Na4 Kd3 
23   +0.00   03:42  16224M  Nb2+ Ke4 Na4 Kd3 
23   +0.00   06:49  29337M  Nb2+ Ke4 Na4 Kd3 
23   +0.00   10:03  42878M  Nb2+ Ke4 Na4 Kd3 
24   +0.00   10:03  42884M  Nb2+ Ke4 Na4 Kd3 
24   +0.00   10:07  43176M  Nb2+ Ke4 Na4 Kd3 
24   +0.00   14:42  62549M  Nb2+ Ke4 Na4 Kd3 
24   +0.00   14:43  62653M  Nb2+ Ke4 Na4 Kd3 
25   +0.00   14:43  62658M  Nb2+ Ke4 Na4 Kd3 
25   +0.00   15:36  66450M  Nb2+ Ke4 Na4 Kd3 
25   +0.00   17:17  73578M  Nb2+ Ke4 Na4 Kd3 
25   +0.00   17:40  75200M  Nb2+ Ke4 Na4 Kd3 
26   +0.00   17:40  75206M  Nb2+ Ke4 Na4 Kd3 
26   +0.00   19:23  82455M  Nb2+ Ke4 Na4 Kd3 
26   +0.00   31:04 130777M  Nb2+ Ke4 Na4 Kd3 
26   +0.00   31:04 130785M  Nb2+ Ke4 Na4 Kd3 
27     #21   31:04 130794M  Nb2+ Ke4 Na4 Kd3 Ne5+ Ke4 Nd7 Kd3 Nb2+ Ke4 Nxc5+ Ke5 Nd7+ Ke4 Na4 Kd3 Ne5+ Ke4 Nf7 Kd3 Nb2+ Ke4 Ng5+ Ke5 Nd3+ Kf6 Bd4+ Kg6 Ne5+ Kg7 Nd7+ Kh6 Nf8 Nd6 Nge6 Nef5 Bf6 Ne4 Bg5+ Nxg5 hxg5+ 
27     #21   45:32 191561M  Nb2+ Ke4 Na4 Kd3 Ne5+ Ke4 Nd7 Kd3 Nb2+ Ke4 Nxc5+ Ke5 Nd7+ Ke4 Na4 Kd3 Ne5+ Ke4 Nf7 Kd3 Nb2+ Ke4 Ng5+ Ke5 Nd3+ Kf6 Bd4+ Kg6 Ne5+ Kg7 Nd7+ Kh6 Nf8 Nd6 Nge6 Nef5 Bf6 Ne4 Bg5+ Nxg5 hxg5+ 
27     #21   53:25 225235M  Nb2+ Ke4 Na4 Kd3 Ne5+ Ke4 Nd7 Kd3 Nb2+ Ke4 Nxc5+ Ke5 Nd7+ Ke4 Na4 Kd3 Ne5+ Ke4 Nf7 Kd3 Nb2+ Ke4 Ng5+ Ke5 Nd3+ Kf6 Bd4+ Kg6 Ne5+ Kg7 Nd7+ Kh6 Nf8 Nd6 Nge6 Nef5 Bf6 Ne4 Bg5+ Nxg5 hxg5+ 
27     #21   53:28 225425M  Nb2+ Ke4 Na4 Kd3 Ne5+ Ke4 Nd7 Kd3 Nb2+ Ke4 Nxc5+ Ke5 Nd7+ Ke4 Na4 Kd3 Ne5+ Ke4 Nf7 Kd3 Nb2+ Ke4 Ng5+ Ke5 Nd3+ Kf6 Bd4+ Kg6 Ne5+ Kg7 Nd7+ Kh6 Nf8 Nd6 Nge6 Nef5 Bf6 Ne4 Bg5+ Nxg5 hxg5+ 
28     #21   53:28 225430M  Nb2+ Ke4 Na4 Kd3 Ne5+ Ke4 Nd7 Kd3 Nb2+ Ke4 Nxc5+ Ke5 Nd7+ Ke4 Na4 Kd3 Ne5+ Ke4 Nf7 Kd3 Nb2+ Ke4 Ng5+ Ke5 Nd3+ Kf6 Bd4+ Kg6 Ne5+ Kg7 Nd7+ Kh6 Nf8 Nd6 Nge6 Nef5 Bf6 Ne4 Bg5+ Nxg5 hxg5+ 
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

Dann Corbit
Posts: 11510
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: Hard Puzzles found on Gameknot

Post by Dann Corbit » Sun Jun 21, 2020 8:16 am

I am missing only this one:

I have it running now with Bluefish set at 50 hours with 61 threads.

Along with verification for these two:

Code: Select all

8/1ppr4/br6/1pkp4/2p1Qp2/KPp2p2/B1PP1P2/8 w - -
4Q1R1/1pRp1rbp/1Pn2k1q/2P2prb/5Pp1/3p1pP1/3P1P1K/6B1 w - -
Taking ideas is not a vice, it is a virtue. We have another word for this. It is called learning.
But sharing ideas is an even greater virtue. We have another word for this. It is called teaching.

MOBMAT
Posts: 315
Joined: Sat Feb 04, 2017 10:57 pm
Location: USA

Re: Hard Puzzles found on Gameknot

Post by MOBMAT » Sun Jun 21, 2020 1:49 pm

I don't see any of the tough mate in 16 FENs solved. Here is one.


Crystal 2.0: Depth 32 Time 34:36 +M16 1.Bb4+ Kc4 2.Nd7 Kd3 3.Ne5+ Ke4 4.Nb5 Kf5 5.Nd6+ Ke6 6.Ne8 Kf5 7.Ng7+ Ke4 8.Nxh5 Kf5 9.Ng3+ Ke6 10.Ne2 Kf5 11.Nd4+ Ke4 12.Ng4 Kd3 13.Nf2+ Kc4 14.Rc1 Ne7 15.Rxc2+ bxc2 16.b3+
i7-6700K @ 4.00Ghz (using 6 threads), EGTBs on PCI SSD
Benchmark: Stockfish 11 64 bmi2 (nps): 2067669

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