Quality of these computer generated puzzles

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vittyvirus
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Quality of these computer generated puzzles

Post by vittyvirus » Sun Jan 13, 2019 5:35 am

These are extracted from World Blitz Chess Championship 2017 from a program I wrote past year during summer.

https://justpaste.it/5aiig

I'm not an extremely strong chess player, so I'm unsure of the worth of the puzzles that it generates, but I've tried to make them look like if they were picked by humans. My question is, do these puzzles compare to, say, chess.com tactics trainer and other online sites?

MikeB
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Re: Quality of these computer generated puzzles

Post by MikeB » Sun Jan 13, 2019 6:32 am

vittyvirus wrote:
Sun Jan 13, 2019 5:35 am
These are extracted from World Blitz Chess Championship 2017 from a program I wrote past year during summer.

https://justpaste.it/5aiig

I'm not an extremely strong chess player, so I'm unsure of the worth of the puzzles that it generates, but I've tried to make them look like if they were picked by humans. My question is, do these puzzles compare to, say, chess.com tactics trainer and other online sites?
This one is nice, it is a mate in 14 with only Kb5 leading to mate.

Code: Select all

  #14 Kb5 Kb8 Ka6 Qf7 Qd5 Qxd5 cxd5 Kc8 d6 Kd7 b7 Kxd6 b8=Q+ Kd5 Qf4 Ke6 Kb7 Kd5 Kb6 Ke6 Kc6 Ke7 Qf5 Ke8 Kd6 Kd8 Qd7# 
Nice mate-in-9

Code: Select all

  #9 Qc7+ Kh8 Nf7+ Kg8 Nxe5 fxe5 Nd6 Bd7 Qxd7 e4 Nxe4 a5 Nc5 a4 Ne6 a3 Qg7# 
Based on a small sample - maybe 15 or so ...Many are very favorable to one side regardless of the move. Those that have one "best" move ( and all other moves draw or lose) are ok for humans - but would be considered easy by many players - may be ok for beginners.

Dann Corbit
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Re: Quality of these computer generated puzzles

Post by Dann Corbit » Mon Jan 14, 2019 8:11 pm

vittyvirus wrote:
Sun Jan 13, 2019 5:35 am
These are extracted from World Blitz Chess Championship 2017 from a program I wrote past year during summer.

https://justpaste.it/5aiig

I'm not an extremely strong chess player, so I'm unsure of the worth of the puzzles that it generates, but I've tried to make them look like if they were picked by humans. My question is, do these puzzles compare to, say, chess.com tactics trainer and other online sites?
Quite a few are imbalanced. Here is a simple wood count measure of those with an apparent advantage:

Code: Select all

>> ** IMBALANCED ** << [-111]:( 1k6/1pp2pQ1/3qb3/PB6/5n2/5P2/5B2/6K1 b - - )
>> ** IMBALANCED ** << [222]:( 1k6/7R/P7/2K5/2P5/8/8/1r6 w - - )
>> ** IMBALANCED ** << [-111]:( 1r2k2r/5ppp/1pp3q1/2QpP1N1/4bP2/1R6/1P4PP/5RK1 w k - )
>> ** IMBALANCED ** << [111]:( 2K5/7R/k1P5/8/8/8/8/6r1 w - - )
>> ** IMBALANCED ** << [222]:( 3b1k2/5p2/4qP2/2p1P3/P1P2BQp/1P3R1K/4r3/8 w - - )
>> ** IMBALANCED ** << [-111]:( 3k4/5p2/8/4p1q1/3bP2p/5P2/6QB/5K2 b - - )
>> ** IMBALANCED ** << [111]:( 3k4/8/6N1/2R5/2b5/3p3P/6PK/5r2 b - - )
>> ** IMBALANCED ** << [111]:( 3q2k1/2R2p1p/4b1p1/4Q1P1/1P1N4/2P1K1P1/r7/8 w - - )
>> ** IMBALANCED ** << [-304]:( 3r3Q/1p1k1p2/4p3/3bP2P/8/2q2P2/6PK/3R4 w - - )
>> ** IMBALANCED ** << [-225]:( 3rr1k1/p3bppp/8/p1pqNb2/3P4/P1P5/4BPPP/2BQR1K1 w - - )
>> ** IMBALANCED ** << [114]:( 4R3/8/6k1/8/3p1n1P/5K2/4p3/8 b - - )
>> ** IMBALANCED ** << [857]:( 4k3/1r1b1p2/3Qp3/8/1P2P3/6P1/5PB1/6K1 w - - )
>> ** IMBALANCED ** << [-111]:( 4r1k1/3b1p2/1n1p1b1p/p2P2p1/P1pP2P1/2q2BN1/5B1P/3QR1K1 w - - )
>> ** IMBALANCED ** << [111]:( 4r2k/1R3B2/5Pp1/p3P3/Pb2K3/4p3/2P5/8 w - - )
>> ** IMBALANCED ** << [111]:( 5k1N/8/1p3P2/p3BK1p/P1Pb4/1n5P/8/8 w - - )
>> ** IMBALANCED ** << [111]:( 5k2/p2r1p2/2p2r2/4R2P/7Q/1P6/P1qp1PP1/3R2K1 w - - )
>> ** IMBALANCED ** << [111]:( 5r2/6kp/1P4p1/2p3q1/P1B1Pn2/2P2R2/8/1K1Q4 w - - )
>> ** IMBALANCED ** << [222]:( 5r2/6kp/6p1/1Pp3P1/P1B1Pn1q/2P2R2/8/1K1Q4 w - - )
>> ** IMBALANCED ** << [225]:( 5rk1/5p2/5np1/4R1Q1/p1B1b2P/KPP5/5q2/2R5 w - - )
>> ** IMBALANCED ** << [111]:( 6R1/3k1P2/1p6/p1b1K3/P1B5/1P6/5r2/8 w - - )
>> ** IMBALANCED ** << [415]:( 6R1/5p1k/2N4p/4B3/r1n2PP1/5K2/8/8 w - - )
>> ** IMBALANCED ** << [222]:( 6k1/1p1n4/p3NP2/P1PP1p2/8/4P3/8/5K2 w - - )
>> ** IMBALANCED ** << [-222]:( 6k1/3R2p1/p1r1ppN1/7p/7P/r1n3P1/5P2/2R2K2 w - - )
>> ** IMBALANCED ** << [-222]:( 6k1/5np1/p3Np1p/1p1Qp3/2q3P1/4P2P/5P2/6K1 w - - )
>> ** IMBALANCED ** << [415]:( 6k1/6P1/5K2/8/8/3N4/2p5/8 w - - )
>> ** IMBALANCED ** << [-225]:( 6k1/p4rp1/1p2q1Np/4p2P/4Q3/1P4P1/P4PK1/8 w - - )
>> ** IMBALANCED ** << [111]:( 7K/3r4/P4k2/8/8/1P6/5p2/5R2 b - - )
>> ** IMBALANCED ** << [111]:( 7b/3k3p/4p1pP/P3P3/2NN4/3n2P1/6K1/8 w - - )
>> ** IMBALANCED ** << [222]:( 8/1k6/1P6/2Q5/K1P2q2/8/8/8 w - - )
>> ** IMBALANCED ** << [106]:( 8/1p1k4/1r6/5rp1/P1P5/K5Q1/1P6/8 w - - )
>> ** IMBALANCED ** << [111]:( 8/2r3k1/5p2/5Pp1/4Q3/1Pq5/2P4R/1K6 b - - )
>> ** IMBALANCED ** << [222]:( 8/3Q4/1k6/1P6/2P5/1K6/4q3/8 w - - )
>> ** IMBALANCED ** << [222]:( 8/3k4/PK6/8/2R4P/8/1r6/8 w - - )
>> ** IMBALANCED ** << [-225]:( 8/3nk3/3p3p/3BpK1P/1B2P3/8/P6r/8 b - - )
>> ** IMBALANCED ** << [-336]:( 8/4B3/r7/1R4p1/5pk1/3r4/5PK1/8 b - - )
>> ** IMBALANCED ** << [111]:( 8/5K2/6Pb/1k2N3/8/8/8/8 w - - )
>> ** IMBALANCED ** << [415]:( 8/5Q2/7R/1P4p1/4p3/4q1kP/8/3r1B1K w - - )
>> ** IMBALANCED ** << [111]:( 8/5k2/1p3PN1/p3BK1p/P1Pb4/1n5P/8/8 w - - )
>> ** IMBALANCED ** << [111]:( 8/5r1p/q5pk/2PR4/4Q1PP/5p1K/5P2/8 w - - )
>> ** IMBALANCED ** << [222]:( 8/6R1/3k4/3P3r/3KP3/8/8/8 w - - )
>> ** IMBALANCED ** << [111]:( 8/6p1/3rpkPp/R6P/Pp2rP2/1P1N3R/2n5/5K2 w - - )
>> ** IMBALANCED ** << [111]:( 8/7k/5Qp1/2p3P1/P7/1P3P2/3p2K1/4q3 b - - )
>> ** IMBALANCED ** << [111]:( 8/7k/5Qp1/2p3P1/P7/1P3PK1/3pq3/8 b - - )
>> ** IMBALANCED ** << [-222]:( 8/8/4k3/1R6/4bK2/2p2p2/6r1/4B3 b - - )
>> ** IMBALANCED ** << [-111]:( 8/8/8/2k3K1/5n1p/2P3p1/8/5B2 b - - )
>> ** IMBALANCED ** << [-415]:( 8/8/8/5k2/5b1K/5r2/6R1/8 b - - )
>> ** IMBALANCED ** << [333]:( 8/8/p5Q1/2k2N2/7P/5qPK/PP6/5n2 w - - )
>> ** IMBALANCED ** << [-667]:( 8/p5kp/1pp1R3/3pB2P/7q/3r4/PP4B1/6K1 b - - )
>> ** IMBALANCED ** << [-222]:( 8/r3q1k1/5pp1/2N4p/5Pbn/2Q5/6BK/2R5 b - - )
>> ** IMBALANCED ** << [111]:( 8/r5k1/5p2/2q2Pp1/4Q3/1P6/2P5/1K5R w - - )
>> ** IMBALANCED ** << [-225]:( K7/5r2/1k1B4/8/8/8/8/8 b - - )
>> ** IMBALANCED ** << [-111]:( r3R1k1/1p3p2/5qp1/p1Pb4/2p4p/Q1P2PB1/P1r3PK/4R3 b - - )
>> ** IMBALANCED ** << [-415]:( r3r1k1/1bn2pbp/q1p2np1/p1Bp4/P2P4/1Q2PNP1/5PBP/2RR2K1 w - - )
>> ** IMBALANCED ** << [222]:( r7/8/3K2p1/2P5/2B1b3/5k2/PP2R3/8 w - - )
Now, a position that is behind and yet wins is actually often more interesting than one that is balanced.
I am running a quick test of your problem set right now.

Colin Frayn also wrote a checkmate generator, where you supply the desired material configuration and it will generate checkmates with that configuration.
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.

duncan
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Re: Quality of these computer generated puzzles

Post by duncan » Mon Jan 14, 2019 8:23 pm

Dann Corbit wrote:
Mon Jan 14, 2019 8:11 pm

Colin Frayn also wrote a checkmate generator, where you supply the desired material configuration and it will generate checkmates with that configuration.
Do you know of a link ?

Dann Corbit
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Re: Quality of these computer generated puzzles

Post by Dann Corbit » Mon Jan 14, 2019 10:15 pm

duncan wrote:
Mon Jan 14, 2019 8:23 pm
Dann Corbit wrote:
Mon Jan 14, 2019 8:11 pm

Colin Frayn also wrote a checkmate generator, where you supply the desired material configuration and it will generate checkmates with that configuration.
Do you know of a link ?
Binary:
http://www.frayn.net/beowulf/matetest.zip
Code:
http://www.frayn.net/beowulf/matetestc.zip

I modified the source to allow deeper mates.
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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Re: Quality of these computer generated puzzles

Post by Dann Corbit » Mon Jan 14, 2019 10:17 pm

Here is the version that I tweaked:
https://drive.google.com/open?id=1dxrjf ... oXwQnTpxZo
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: 9677
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: Quality of these computer generated puzzles

Post by Dann Corbit » Mon Jan 14, 2019 10:59 pm

vittyvirus wrote:
Sun Jan 13, 2019 5:35 am
These are extracted from World Blitz Chess Championship 2017 from a program I wrote past year during summer.

https://justpaste.it/5aiig

I'm not an extremely strong chess player, so I'm unsure of the worth of the puzzles that it generates, but I've tried to make them look like if they were picked by humans. My question is, do these puzzles compare to, say, chess.com tactics trainer and other online sites?
Here is the data as a set of analyzed EPD records. Some have multiple solutions. I guess that all of them will be solved in under a second on decent hardware with a top program (as far as picking the key move goes).

Code: Select all

4r1k1/3b1p2/1n1p1b1p/p2P2p1/P1pP2P1/2q2BN1/5B1P/3QR1K1 w - - acd 31; acs 48; bm Rxe8+; ce 423; pm Rxe8+; pv Rxe8+ Bxe8 Ne4 Qa3 Nxf6+ Kf8 Bg3 Bxa4 Qb1 Nc8 Be2 Qe3+ Kf1 Qe7 Nh5 c3 Qh7 Ke8 Be1 c2 Bd2 Nb6 Qxh6 Nxd5 Kf2 Kd7 Bxg5 f6 Bd2 f5 g5 Nc3 Nf6+ Kc7 Bd3 f4 Bxf4 Bc6 d5 Bxd5 Nxd5+ Nxd5 Bd2 Nb4 Bf5 Kb7 Qh7 Qxh7 Bxh7 Kc8 Ke3 Kb7 h4 Kc7; 
r3r1k1/1bn2pbp/q1p2np1/p1Bp4/P2P4/1Q2PNP1/5PBP/2RR2K1 w - - acd 33; acs 59; bm Bf1; ce 469; pm Bf1; pv Bf1; 
2n1q3/3r1r1k/1pp1bpp1/4p2p/2PbPP1P/1PNR2P1/4Q1BK/3RN3 w - - acd 32; acs 59; bm f5; ce 555; pm f5; pv f5; 
3rr1k1/p3bppp/8/p1pqNb2/3P4/P1P5/4BPPP/2BQR1K1 w - - acd 33; acs 57; bm Bc4; ce 757; pm Bc4; pv Bc4 cxd4 Bxd5 Rxd5 Nc6 Be6 Nxd4 Rdd8 Bf4 Bd7 Re5 Bxa3 Rxa5 Bf8 f3 a6 Rxa6 Bc5 Qd3 Be7 Ra7 Bh4 g3 Bf6 h4 h6 h5 Be6 g4 Re7 Bc7 Red7 Bxd8 Bxd4+ cxd4 Rxa7 Bb6 Ra2 Qb5 Rd2 Qc5 Ra2; 
5R2/p2k4/5Pb1/1p1K3p/3Pp3/2r4P/P5N1/8 b - - acd 32; acs 59; bm Rg3; ce 836; pm Rg3; pv Rg3; 
6k1/3R2p1/p1r1ppN1/7p/7P/r1n3P1/5P2/2R2K2 w - - acd 34; acs 50; bm Ne7+; ce 841; pm Ne7+; pv Ne7+ Kf8 Nxc6 e5 Rb7 Kg8 Nd8 Kh7 Rd7 Kg6 Ne6 a5 Rxg7+ Kf5 Nc5 a4 Ra7 Nb5 Ra6 Nc7 Rxa4 Rxa4 Nxa4 Ne6 Nc5 Nd4 Ra1 Kg6 Ra4 Kg7 Ra6 Kf7 Kg2 f5 Nd3 Nf3 Kxf3 e4+ Ke3 exd3 Kxd3 Ke7; 
r1br2k1/pp1n1pbp/2pPp1p1/PqN1P3/5P2/1P4P1/5QBP/2RRB2K w - - acd 31; acs 50; bm Bf1; c0 "Bf1 is best but b4 and Ne4 also win"; ce 895; pm Bf1; pv Bf1 Qxc5 Rxc5 Nxc5 Qxc5 a6 Qb6 Rd7 Bc3 Bh6 Qe3 Bf8 f5 gxf5 g4 f4 Qxf4 b5 Qg5+ Kh8 Qh4 h6 Bg2 Rb8 Bd2 Kg8 g5 Bb7 Qh3 Bg7 g6 c5 Rf1 c4; 
3r2k1/1p3rb1/2p5/1n4q1/1P4P1/1Q1pPB1R/8/2B2K1R b - - acd 33; acs 59; bm d2; c0 "d2 is best but Qe5 and Nc3 may also win"; ce 955; pm d2; pv d2 Kg2 dxc1=R Rxc1 Rd2+ Kh1 Rf2 Rc4 R2xf3 Rxf3 Qd5 e4 Rxf3 exd5 Rxb3 dxc6 bxc6 Kg2 Nd4 Kf2 Be5 g5 Kf7 Rc5 Rb2+ Ke3 Bg7 Ra5 Rxb4 Ra8 Rb5 Rd8 Rd5 Ra8 Rxg5 Kf2 Rg4 Ra5; 
1k6/1pp2pQ1/3qb3/PB6/5n2/5P2/5B2/6K1 b - - acd 33; acs 59; bm Nh3+; c0 "Nh3+ is best, but Qd1+ and b6 may also win"; ce 1091; pm Nh3+; pv Nh3+; 
1r2k2r/5ppp/1pp3q1/2QpP1N1/4bP2/1R6/1P4PP/5RK1 w k - acd 35; acs 59; bm Rxb6 Ra1; c0 "Rxb6 and Ra1 are equally good and Nxe4 probably wins also."; ce 1181; pm Rxb6 Ra1; pv Rxb6; 
8/6p1/3rpkPp/R6P/Pp2rP2/1P1N3R/2n5/5K2 w - - acd 31; acs 59; bm Ra7; ce 1239; pm Ra7; pv Ra7; 
5rk1/5p2/5np1/4R1Q1/p1B1b2P/KPP5/5q2/2R5 w - - acd 29; acs 59; bm Rf1 Rxe4; c0 "Rf1 and Rxe4 both win easily and b4 wins as well, but not as dominantly"; ce 1626; pm Rf1 Rxe4; pv Rf1; 
6k1/5np1/p3Np1p/1p1Qp3/2q3P1/4P2P/5P2/6K1 w - - acd 36; acs 54; bm Qd7; ce 1757; pm Qd7; pv Qd7 Qxe6 Qxe6 Kf8 Qxa6 Ng5 Qa8+ Ke7 Qb7+ Kd6 Qxg7 Ke6 Qxh6 Ke7 h4 Nf3+ Kg2 Ne1+ Kg3 Ke6 Qh7 Kd5 Qb1 Kc4 Qxe1 b4 Qe2+ Kc3 Qf3 Kd3 Qxf6 b3 Qxe5 Kc2 Qe4+ Kc1 Qd4 Kc2 Kg2 b2 Qc4+ Kd2; 
r1b1Q3/ppp2ppk/7P/3rP1p1/8/2R1P3/PP3KP1/1q3B1R b - - acd 30; acs 59; bm Rd2+; ce 1784; pm Rd2+; pv Rd2+; 
5r2/6kp/1P4p1/2p3q1/P1B1Pn2/2P2R2/8/1K1Q4 w - - acd 34; acs 59; bm Qd6; c0 "Qd6 is best, but Qd7+ and a5 both win easily"; ce 1813; pm Qd6; pv Qd6; 
7b/3k3p/4p1pP/P3P3/2NN4/3n2P1/6K1/8 w - - acd 31; acs 59; bm a6; c0 "a6 is best, but Nb6+ and Nf3 both win easily"; ce 2510; pm a6; pv a6; 
3q2k1/2R2p1p/4b1p1/4Q1P1/1P1N4/2P1K1P1/r7/8 w - - acd 36; acs 59; bm Qg7+; c0 "Qg7+ is best but Nxe6 and b5 both win easily"; ce 2549; pm Qg7+; pv Qg7+; 
3r3Q/1p1k1p2/4p3/3bP2P/8/2q2P2/6PK/3R4 w - - acd 31; acs 59; bm Rxd5+; ce 3666; pm Rxd5+; pv Rxd5+; 
5k2/p2r1p2/2p2r2/4R2P/7Q/1P6/P1qp1PP1/3R2K1 w - - acd 34; acs 59; bm Rxd2; ce 6381; pm Rxd2; pv Rxd2; 
8/r3q1k1/5pp1/2N4p/5Pbn/2Q5/6BK/2R5 b - - acd 31; acs 59; bm Nxg2; c0 "Nxg2 is best, but Ra2 and Qd6 both win easily"; ce 6867; pm Nxg2; pv Nxg2; 
8/p5kp/1pp1R3/3pB2P/7q/3r4/PP4B1/6K1 b - - acd 42; acs 59; bm Kg8; c0 "Kg8 is best, but Kf7 and Kf8 both win easily"; ce 6973; pm Kg8; pv Kg8; 
8/1p1k4/1r6/5rp1/P1P5/K5Q1/1P6/8 w - - acd 35; acs 59; bm Qd3+; c0 "Qd3+ dominates, but b4 and Qg4 may also win"; ce 7503; pm Qd3+; pv Qd3+; 
5r2/pp3q1k/6bP/2p1Qn2/2P2R2/1P6/P2P4/2K2R2 w - - acd 36; acs 59; bm Rxf5; ce 7647; pm Rxf5; pv Rxf5; 
r7/8/3K2p1/2P5/2B1b3/5k2/PP2R3/8 w - - acd 157; acs 56; bm Rxe4; ce 32612; dm 78; pm Rxe4; pv Rxe4 Rd8+ Ke5 Rc8 c6 Kg2 Bd5 Kg1 Rc4 Rc7 Rg4+ Kf1 Kd6 Rc8 c7 Ke1 Rxg6 Rh8 c8=Q Rxc8 Rg8 Rc2 Rg1+ Kd2 Rg2+ Kc1 Rxc2+ Kd1; 
1k3b2/3R4/1p6/p3KB2/P7/1P6/8/5r2 w - - acd 153; acs 59; bm Rd8+; ce 32616; dm 76; pm Rd8+; pv Rd8+ Kc7 Rc8+ Kb7 Rxf8 Re1+ Be4+ Kc7 Rf7+ Kd8 b4 axb4 Rb7 Re2 Rxb6 Rb2 Kd6 Ke8 Rb8+ Kf7 Kc5 Kg7 Rxb4 Ra2 Kb6 Kh8 a5 Ra3 a6 Kg7 a7 Kf6 a8=R Re3; 
8/6kp/5p2/1r3PPK/7P/8/1p6/1R6 b - - acd 143; acs 3; bm Rb4; ce 32626; dm 71; pm Rb4; pv Rb4 g6 hxg6+ fxg6 Rb5+ Kg4 Kxg6 Kf3 Kh5 Kf4 Rb3 Kf5 Kxh4 Rh1+ Kg3 Rg1+ Kf2 Rb1 Rf3+ Ke6 f5 Rh1 f4 Kf5 Rb3 Rb1 f3 Ke5 Kg2 Kd4 f2 Kc4 f1=Q+ Rxf1; 
8/8/5R1p/8/6P1/1p1kr3/6KP/8 b - - acd 143; acs 24; bm b2; ce 32626; dm 71; pm b2; pv b2 Rf1 Re2+ Kf3 Rxh2 Kg3 Rd2 Kf3 Kc2 Ke3 h5 gxh5; 
4R3/8/6k1/8/3p1n1P/5K2/4p3/8 b - - acd 133; acs 53; bm d3; ce 32636; dm 66; pm d3; pv d3 Kxf4; 
8/8/4k3/1R6/4bK2/2p2p2/6r1/4B3 b - - acd 69; acs 59; bm c2; ce 32700; dm 34; pm c2; pv c2; 
2K5/7R/k1P5/8/8/8/8/6r1 w - - acd 45; acs 27; bm Rh8; ce 32724; dm 22; pm Rh8; pv Rh8 Kb6 c7 Rg7 Rh6+ Ka7 Rc6 Rg8+ Kd7 Rg7+ Kd6 Rg6+ Kc5 Rg5+ Kd4 Rg4+ Ke5 Rg5+ Kf6 Rg8 c8=Q Rxc8 Rxc8 Kb7 Rc5 Kb6 Rh5 Kb7 Ke6 Kc6 Ke7 Kc7 Rh6 Kc8 Kd6 Kb7 Kd7 Kb8 Kc6 Ka7 Kc7 Ka8 Ra6+; 
8/5Q2/7R/1P4p1/4p3/4q1kP/8/3r1B1K w - - acd 43; acs 13; bm Rf6; ce 32726; dm 21; pm Rf6; pv Rf6 Qc1 Qf8 g4 hxg4 Qe3 Qb8+ Kxg4 Qg8+ Kh4 Qh8+ Kg4 Rg6+ Qg5 Rxg5+ Kxg5 Qe5+ Kg4 Qxe4+ Kg5 Qe5+ Kg6 Qg3+ Kh6 Qh4+ Kg7 Qg4+ Kh7 Qxd1 Kg7 b6 Kg6 Qg4+ Kf6 b7 Ke5 b8=Q+ Kf6 Qd8+ Kf7 Bc4+; 
6R1/3k1P2/1p6/p1b1K3/P1B5/1P6/5r2/8 w - - acd 41; acs 19; bm Be6+; ce 32728; dm 20; pm Be6+; pv Be6+ Kc7 Rc8+ Kb7 Rxc5 Rxf7 Bxf7 bxc5 Kd6 Kc8 Bd5 Kd8 Kxc5 Kc7 b4 axb4 a5 b3 Bxb3 Kb7 Bc4 Kc8 a6 Kc7 Be6 Kd8 Kd6 Ke8 a7 Kf8 a8=Q+ Kg7 Qg8+ Kh6 Qg4 Kh7 Bf7 Kh6 Qg6+; 
6k1/2q2p2/2P4p/6p1/r7/3R1QPK/6P1/8 w - - acd 39; acs 19; bm Qf6; ce 32730; dm 19; pm Qf6; pv Qf6 Qc8+ Rd7 Qe8 Rd8 Qxd8 Qxd8+ Kg7 c7 Rc4 c8=Q Rxc8 Qxc8 Kf6 Qe8 Kf5 Qe7 Kg6 g4 Kg7 Qd6 Kh7 Qf6 Kg8 Qxh6 f6 Qxf6 Kh7 Qxg5 Kh8 Kh4 Kh7 Kh5 Kh8 Kg6 Kg8 Qd8+; 
8/7k/5Qp1/2p3P1/P7/1P3PK1/3pq3/8 b - - acd 39; acs 34; bm Qe8; ce 32730; dm 19; pm Qe8; pv Qe8 Qd6 Qe1+ Kh2 Qf2+ Kh3 Qxf3+ Kh2 d1=Q Qe7+ Kg8 Qe8+ Kg7 Qe7+ Qf7 Qxf7+ Kxf7 a5 Qxb3 a6 Qa2+ Kg3 Qxa6 Kf2 Qd3 Ke1 Ke6 Kf2 Kf5 Ke1 Kf4 Kf2 Qd2+ Kf1 Kf3 Kg1 Qg2+; 
8/2r3k1/5p2/5Pp1/4Q3/1Pq5/2P4R/1K6 b - - acd 37; acs 1; bm Ra7; ce 32732; dm 18; pm Ra7; pv Ra7 Qa4 Rxa4 bxa4 Qb4+ Ka2 Qxa4+ Kb2 Qb4+ Ka2 Qa5+ Kb3 Qb6+ Ka4 Qa7+ Kb5 Qb8+ Kc6 Qxh2 c3 Qe5 Kb6 Qxc3 Kb5 g4 Kb6 g3 Kb5 g2 Ka4 g1=Q Kb5 Qb1+ Ka4 Qca1+; 
8/r5k1/5p2/2q2Pp1/4Q3/1P6/2P5/1K5R w - - acd 37; acs 22; bm Qe8; ce 32732; dm 18; pm Qe8; pv Qe8 Qxf5 Qh8+ Kg6 Rh6+ Kf7 Rh7+ Qxh7 Qxh7+ Ke6 Qxa7 Ke5 Qe7+ Kf5 c4 g4 c5 g3 c6 g2 Qe3 g1=Q+ Qxg1 Ke6 Qg7 Kf5 c7 Ke4 Qxf6 Ke3 c8=Q Kd3 Qcc3+ Ke2 Qff3+; 
8/3k4/PK6/8/2R4P/8/1r6/8 w - - acd 35; acs 16; bm Ka5; ce 32734; dm 17; pm Ka5; pv Ka5 Ra2+ Ra4 Rg2 a7 Rg8 Kb6 Ke6 a8=Q Rxa8 Rxa8 Kf5 Rg8 Ke6 h5 Kf7 Rg6 Kf8 Kc7 Ke7 Ra6 Kf7 Kd7 Kg8 Ke7 Kg7 Rg6+ Kh8 Ke6 Kh7 Kf7 Kh8 Rh6+; 
8/5p1k/6p1/2Qp1n2/7p/4PP1P/1q2NKP1/8 b - - acd 35; acs 17; bm Ng3; ce 32734; dm 17; pm Ng3; pv Ng3 Qc1 Qxe2+ Kg1 Nf5 Qf1 Qxe3+ Qf2 Qc3 Qe2 d4 Qe8 d3 Qxf7+ Ng7 Qd5 Qc1+ Kh2 d2 g4 hxg3+ Kxg3 d1=R Kf2 Rxd5 h4 Rd2+ Ke3 Qe1+ Kf4 Rd4+ Kg5 Qxh4+; 
8/7k/5Qp1/2p3P1/P7/1P3P2/3p2K1/4q3 b - - acd 35; acs 34; bm Qe8; ce 32734; dm 17; pm Qe8; pv Qe8 Qd6 Qe2+ Kg3 d1=Q Qc7+ Kg8 Qb8+ Kf7 Qf4+ Ke6 Qf6+ Kd7 Qg7+ Qe7 Qxe7+ Kxe7 Kg2 Ke6 Kf2 Qd2+ Kg3 Kf5 b4 Qe3 Kg2 Kf4 bxc5 Qe2+ Kh3 Qf2 c6 Qg3+; 
8/3nk3/3p3p/3BpK1P/1B2P3/8/P6r/8 b - - acd 35; acs 37; bm Rg2; ce 32734; dm 17; pm Rg2; pv Rg2 Bd2 Rxd2 Kg4 Nf6+ Kf3 Nxd5 a4 Nc3 a5 Ra2 a6 Rxa6 Ke3 Nxe4 Kxe4 Ra3 Kf5 Ra4 Kg6 e4 Kg7 e3 Kg6 e2 Kg7 e1=Q Kh7 Rg4 Kxh6 Qa5 Kh7 Qxh5+; 
3k4/8/6N1/1bp1R3/8/3p3P/6PK/5r2 b - - acd 35; acs 55; bm Bc4; ce 32734; dm 17; pm Bc4; pv Bc4 Rxc5 d2 Rxc4 d1=Q Re4 Qb1 Rf4 Rh1+ Kg3 Qxg6+ Kf2 Qc2+ Kg3 Qc7 Kg4 Qg7+ Kf3 Rf1+ Ke4 Qxg2+ Ke3 Qg3+ Rf3 Rxf3+ Kd4 Rf4+ Kc5 Kc7 h4 Qg6 Kd5 Qd6+; 
1k6/7R/P7/2K5/2P5/8/8/1r6 w - - acd 35; acs 59; bm Rb7+; ce 32734; dm 17; pm Rb7+; pv Rb7+ Rxb7 axb7 Kc7 Kd5 Kxb7 Kd6 Kb8 Kd7 Ka7 c5 Ka6 c6 Kb5 Kd6 Kc4 c7 Kd4 c8=Q Ke4 Qc2+ Ke3 Ke5 Kf3 Qc3+ Kf2 Kf4 Ke2 Qc2+ Kf1 Kf3 Kg1 Qg2+; 
8/3Q4/1k6/1P6/2P5/1K6/4q3/8 w - - acd 33; acs 0; bm c5+; ce 32736; dm 16; pm c5+; pv c5+ Kxc5 Qc6+ Kd4 Qd6+ Ke4 Qe6+ Kf3 Qxe2+ Kxe2 b6 Ke3 b7 Ke4 b8=Q Kf5 Kc4 Kg4 Qe5 Kf3 Kd3 Kf2 Qf4+ Kg1 Qg5+ Kf2 Qg4 Kf1 Ke3 Ke1 Qg1+; 
3k4/8/6N1/2R5/2b5/3p3P/6PK/5r2 b - - acd 31; acs 18; bm d2; ce 32738; dm 15; pm d2; pv d2 Rxc4 d1=Q Re4 Qb1 Rf4 Rh1+ Kg3 Qxg6+ Rg4 Qd6+ Kh4 Rf1 Kh5 Rf7 Ra4 Rf5+ Kh4 Rf4+ Rxf4 Qxf4+ Kh5 Qg3 Kh6 Ke7 Kh5 Kf6 h4 Qg6+; 
4k3/1r1b1p2/3Qp3/8/1P2P3/6P1/5PB1/6K1 w - - acd 29; acs 1; bm e5; ce 32740; dm 14; pm e5; pv e5 Rb5 Bc6 Rd5 Bxd7+ Kd8 Bc6+ Rxd6 exd6 f5 b5 Kc8 b6 e5 b7+ Kb8 d7 Kc7 b8=Q+ Kxb8 d8=Q+ Ka7 Qc7+ Ka6 Qb7+ Ka5 Qb5+; 
8/1k6/1P6/2Q5/K1P2q2/8/8/8 w - - acd 29; acs 1; bm Kb5; ce 32740; dm 14; pm Kb5; pv Kb5 Kb8 Qd5 Kc8 Qe6+ Kd8 Kc6 Qf3+ Qd5+ Qxd5+ cxd5 Ke7 d6+ Kf6 d7 Ke6 b7 Ke5 d8=Q Kf5 Qd5+ Kf4 b8=Q+ Ke3 Qg3+ Ke2 Qdd3+; 
8/8/5kP1/2p4K/p1p4p/PpP5/1P4P1/8 w - - acd 29; acs 10; bm Kh6; ce 32740; dm 14; pm Kh6; pv Kh6 Kf5 g7 Ke4 g8=Q Kd3 Qg6+ Kd2 Qb1 Ke2 Kg5 h3 gxh3 Ke3 Qd1 Ke4 Kf6 Ke3 Kf5 Kf2 Kf4 Kg2 Qe2+ Kh1 Kg3 Kg1 Qd1+; 
8/5K2/6Pb/1k2N3/8/8/8/8 w - - acd 29; acs 19; bm Ng4; ce 32740; dm 14; pm Ng4; pv Ng4 Bc1 g7 Bb2 g8=Q Kc4 Qh7 Bd4 Qe4 Kc3 Ne5 Ba7 Qd3+ Kb4 Qc4+ Ka5 Nc6+ Kb6 Nd4 Kb7 Qc6+ Kb8 Nb5 Bd4 Qc7+ Ka8 Qc8+; 
5r2/1p4k1/8/5qNQ/3p1b1P/3P4/5R2/6K1 w - - acd 29; acs 21; bm Rxf4; ce 32740; dm 14; pm Rxf4; pv Rxf4 Qxf4 Ne6+ Kf6 Nxf4 Rg8+ Kh2 Ra8 Qd5 Ra6 Qd7 Ra2+ Kg3 Ra6 Qe8 Kg7 Nh5+ Kh6 Qh8+ Kg6 Qg7+ Kf5 Nf4 Rg6+ Qxg6+ Ke5 Qe6+; 
4r2k/1R3B2/5Pp1/p3P3/Pb2K3/4p3/2P5/8 w - - acd 29; acs 38; bm Bxg6; ce 32740; dm 14; pm Bxg6; pv Bxg6 Rc8 Kxe3 Kg8 e6 Rc3+ Kd4 Rc8 Rxb4 axb4 e7 Kh8 f7 Kg7 e8=Q Kxg6 Qxc8 Kxf7 Ke5 Kg7 Kf5 Kf7 Qd7+ Kg8 Kf6 Kf8 Qf7+; 
6k1/1p1n4/p3NP2/P1PP1p2/8/4P3/8/5K2 w - - acd 27; acs 5; bm c6; ce 32742; dm 13; pm c6; pv c6 bxc6 dxc6 Kf7 cxd7 Kxf6 d8=Q+ Kxe6 Qc8+ Ke5 Qxa6 f4 Qb5+ Ke4 a6 fxe3 a7 e2+ Kxe2 Kd4 a8=R Kc3 Rc8+ Kd4 Rc4+; 
8/8/p5Q1/2k2N2/7P/5qPK/PP6/5n2 w - - acd 27; acs 8; bm Qd6+; ce 32742; dm 13; pm Qd6+; pv Qd6+ Kc4 Qc7+ Kd3 Qc3+ Ke4 Nd6+ Kd5 Qxf3+ Kxd6 Qxf1 Ke7 Qxa6 Kf7 Qc6 Ke7 h5 Kf8 Qb7 Ke8 h6 Kd8 h7 Ke8 h8=Q+; 
8/8/8/2k3K1/5n1p/2P3p1/8/5B2 b - - acd 27; acs 21; bm h3; ce 32742; dm 13; pm h3; pv h3 Kxf4 g2 Bd3 h2 Be4 h1=Q Bxg2 Qxg2 Kf5 Qg3 Ke6 Qg5 Kf7 Kd6 c4 Qf4+ Kg6 Ke6 c5 Qg3+ Kh7 Kf6 Kh8 Qg7#; 
8/5k2/1p3PN1/p3BK1p/P1Pb4/1n5P/8/8 w - - acd 25; acs 20; bm Nh8+; ce 32744; dm 12; pm Nh8+; pv Nh8+ Ke8 f7+ Ke7 Bd6+ Kxd6 f8=Q+ Kc7 Qe7+ Kb8 Nf7 Bf6 Kxf6 h4 Nd6 Nc5 Nb5 Ne4+ Kg6 Nc5 Qc7+ Ka8 Qa7#; 
r3R1k1/1p3p2/5qp1/p1Pb4/2p4p/Q1P2PB1/P1r3PK/4R3 b - - acd 23; acs 24; bm Kh7; ce 32746; dm 11; pm Kh7; pv Kh7 R8e2 hxg3+ Kxg3 Qg5+ Kf2 Qh4+ Kg1 Re8 Kf1 Bxf3 gxf3 Qh1+ Kf2 Qh2+ Kf1 Rxe2 Rxe2 Qxe2+ Kg1 Qd1#; 
8/6R1/3k4/3P3r/3KP3/8/8/8 w - - acd 21; acs 10; bm e5+; ce 32748; dm 10; pm e5+; pv e5+ Rxe5 Rg6+ Kc7 Kxe5 Kb7 d6 Kb6 d7+ Kc7 Rd6 Kd8 Ke6 Kc7 d8=Q+ Kb7 Rb6+ Ka7 Qb8#; 
5k1N/8/1p3P2/p3BK1p/P1Pb4/1n5P/8/8 w - - acd 21; acs 24; bm Bd6+; ce 32748; dm 10; pm Bd6+; pv Bd6+ Kg8 f7+ Kh7 f8=Q Bg7 Qf7 Nd4+ Kg5 Nf3+ Qxf3 Bh6+ Kxh5 Bg7 Qf7 Kxh8 Kg6 Bf6 Qh7#; 
8/5r1p/q5pk/2PR4/4Q1PP/5p1K/5P2/8 w - - acd 21; acs 25; bm g5+; ce 32748; dm 10; pm g5+; pv g5+ Kg7 Qe5+ Kg8 Rd8+ Rf8 Qd5+ Kg7 Rd7+ Kh8 Qe5+ Qf6 gxf6 Kg8 Qe7 Rf7 Qxf7+ Kh8 Qxh7#; 
8/8/8/5k2/5b1K/5r2/6R1/8 b - - acd 19; acs 7; bm Rf1; ce 32750; dm 9; pm Rf1; pv Rf1 Rg3 Bxg3+ Kxg3 Rf4 Kh3 Rg4 Kh2 Kf4 Kh3 Rg6 Kh2 Kf3 Kh1 Kf2 Kh2 Rh6#; 
3b1k2/5p2/4qP2/2p1P3/P1P2BQp/1P3R1K/4r3/8 w - - acd 19; acs 11; bm Bh6+; ce 32750; dm 9; pm Bh6+; pv Bh6+ Ke8 Qxe6+ fxe6 f7+ Kd7 f8=Q Rh2+ Kxh2 Be7 Rd3+ Kc6 Qxe7 Kb6 Rd6+ Ka5 Bd2#; 
5r2/6kp/6p1/1Pp3P1/P1B1Pn1q/2P2R2/8/1K1Q4 w - - acd 19; acs 21; bm Qd7+; ce 32750; dm 9; pm Qd7+; pv Qd7+ Kh8 Qe7 Qe1+ Kc2 Qxc3+ Rxc3 Ne6 Qxe6 h5 Qe5+ Kh7 Qe7+ Kh8 Qxf8+ Kh7 Qg8#; 
3Q4/1p4k1/p1bN1p1p/4q3/4N3/8/5K2/8 w - - acd 19; acs 30; bm Qc7+; ce 32750; dm 9; pm Qc7+; pv Qc7+ Kh8 Nf7+ Kg8 Nxe5 fxe5 Nd6 Bd7 Qxd7 e4 Nf5 e3+ Kxe3 Kf8 Qg7+ Ke8 Qe7#; 
K7/5r2/1k1B4/8/8/8/8/8 b - - acd 15; acs 0; bm Ra7+; ce 32754; dm 7; pm Ra7+; pv Ra7+ Kb8 Rd7 Be7 Rxe7 Kc8 Kc6 Kb8 Re8+ Ka7 Rg8 Ka6 Ra8#; 
7k/1p3Q2/p1bN1p1p/4q3/4N3/8/5K2/8 w - - acd 15; acs 1; bm Qf8+; ce 32754; dm 7; pm Qf8+; pv Qf8+ Kh7 Nxf6+ Qxf6+ Qxf6 Bd7 Qf7+ Kh8 Qg6 Be6 Ne8 h5 Qg7#; 
3k4/5p2/8/4p1q1/3bP2p/5P2/6QB/5K2 b - - acd 13; acs 0; bm Qc1+; ce 32756; dm 6; pm Qc1+; pv Qc1+ Ke2 Qc2+ Ke1 Bc3+ Qd2+ Qxd2+ Kf1 h3 f4 Qe1#; 
8/1k6/4p3/6P1/4R3/2p4P/nr6/K3N3 b - - acd 13; acs 0; bm Nc1; ce 32756; dm 6; pm Nc1; pv Nc1 Rb4+ Rxb4 Nc2 Rb2 Nd4 e5 h4 exd4 h5 Nb3#; 
6k1/6P1/5K2/8/8/3N4/2p5/8 w - - acd 11; acs 0; bm Nc1; ce 32758; dm 5; pm Nc1; pv Nc1 Kh7 Kf7 Kh6 g8=Q Kh5 Qg3 Kh6 Qh4#; 
5k2/p3R1R1/2p3p1/2n5/1K6/6B1/PP2q2P/8 b - - acd 9; acs 0; bm Qb5+; ce 32760; dm 4; pm Qb5+; pv Qb5+ Kc3 Qd3+ Kb4 Qd4+ Ka3 Qa4#; 
6k1/p4rp1/1p2q1Np/4p2P/4Q3/1P4P1/P4PK1/8 w - - acd 9; acs 0; bm Qa8+; ce 32760; dm 4; pm Qa8+; pv Qa8+ Qe8 Qxe8+ Rf8 Qxf8+ Kh7 Qh8#; 
5k2/p3R1R1/2p3p1/1qn5/8/2K3B1/PP5P/8 b - - acd 7; acs 0; bm Qd3+; ce 32762; dm 3; pm Qd3+; pv Qd3+ Kb4 Qd4+ Ka3 Qa4#; 
5Q2/1p6/p1bN1Nkp/4q3/8/8/5K2/8 w - - acd 7; acs 0; bm Qf7+; ce 32762; dm 3; pm Qf7+; pv Qf7+ Kg5 Qg7+ Kf4 Qg4#; 
7K/3r4/P4k2/8/8/1P6/5p2/5R2 b - - acd 7; acs 0; bm Kg6; ce 32762; dm 3; pm Kg6; pv Kg6 Rg1+ fxg1=Q b4 Rd8#; 
8/4B3/r7/1R4p1/5pk1/3r4/5PK1/8 b - - acd 7; acs 0; bm f3+; ce 32762; dm 3; pm f3+; pv f3+ Kh2 Rh6+ Kg1 Rd1#; 
6R1/5p1k/2N4p/4B3/r1n2PP1/5K2/8/8 w - - acd 5; acs 0; bm Rh8+; ce 32764; dm 2; pm Rh8+; pv Rh8+ Kg6 Ne7#; 
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.

JohnS
Posts: 129
Joined: Sun Feb 24, 2008 1:08 am

Re: Quality of these computer generated puzzles

Post by JohnS » Tue Jan 15, 2019 12:46 am

Dann Corbit wrote:
Mon Jan 14, 2019 10:17 pm
Here is the version that I tweaked:
https://drive.google.com/open?id=1dxrjf ... oXwQnTpxZo
I must be missing something since nothing happens when I run the program. How do you use it thanks?

Dann Corbit
Posts: 9677
Joined: Wed Mar 08, 2006 7:57 pm
Location: Redmond, WA USA
Contact:

Re: Quality of these computer generated puzzles

Post by Dann Corbit » Tue Jan 15, 2019 2:43 am

No idea what went wrong there.
The source did not have my changes, either.

Try this one:
https://drive.google.com/open?id=1dxrjf ... oXwQnTpxZo
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.

JohnS
Posts: 129
Joined: Sun Feb 24, 2008 1:08 am

Re: Quality of these computer generated puzzles

Post by JohnS » Tue Jan 15, 2019 4:53 am

Dann Corbit wrote:
Tue Jan 15, 2019 2:43 am
No idea what went wrong there.
The source did not have my changes, either.

Try this one:
https://drive.google.com/open?id=1dxrjf ... oXwQnTpxZo
Thanks Dann - it works now.

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