Sting SF 10

[lech]

The project Sting, based on Stockfish 2.1.1, has to prove that the classic (alpha-beta) engines, thanks to some special codes (no tricks!), can also solve positions dedicated intelligent creatures mainly.
I hope, my project seems to be an interesting support for Stockfish's wonderful idea.

One important problem was omitted by me in previous versions: perpetual stalemates, and now it (and others) is done.
download: http://www.mediafire.com/file/jef7k5nvy ... 0.zip/file

The "IQ" test (added new 4 items) is a very important part of my project and doesn't contain middle-game tactical positions and technical endgames (Stockfish's domain).
Here are only positions dedicated to try so-called by me quasi-intelligent abilities of engines.
Don't use such external tricks like: multiPV, rule 50, null-move disabling, special parameters and others.
Tablebases and "Monte Carlo" are not welcome too.
Time to solve each of items should be 30 minutes for 1 000 000 nodes/second speed. It means 3 minutes for 10 000 000 nodes/second only. Of course, the going on last depth should not be broken.
The DRAW result means ZERO score or a missing gain.
The WIN result means the correct solution mainly and any gain.
Here are rather easy, sometimes specially simplified be me, examples of possible problems for a clessic model of engines.
The spectrum of examples (84 items) and estimated time of solving are not accidental.
[pgn][Result "1"] [FEN "7k/6rp/6pN/1r4P1/3B4/8/8/K7 b - - "] 1... Rxg5 {win} [Result "2"] [FEN "1B1k4/3p4/1Kp5/PpP2p2/1PqP1P2/8/1P6/8 w - - "] 1. a6 {win} [Result "3"] [FEN "3N2r1/2K1p3/4Pk2/8/Bp5b/8/2P5/8 b - - "] 1... Bg3 2. Kd7 Rxd8 {win} [Result "4"] [FEN "8/7p/5P1k/1p5P/5p2/2p1p3/P1P1P1P1/1K3Nb1 w - - "] 1. Ng3 {win} [Result "5"] [FEN "6q1/PpB5/k7/P6K/6n1/1P4p1/5p2/1B3N1N w - - "] 1. a8Q {or 1. a8R win} [Result "6"] [FEN "6k1/6p1/4Rb1p/p7/rp2P1N1/2P3P1/1P5P/6K1 b - - "] 1... Bxc3 {win} [Result "7"] [FEN "8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - "] 1. Ng2 {win} [Result "8"] [FEN "2k5/p7/Pp1p1b2/1P1P1p2/2P2P1p/3K3P/5B2/8 w - - "] 1. c5 {win} [Result "9"] [FEN "1n6/Pp1p1p1p/1P1P1P1P/4K3/2p5/p7/rpp1P3/qkb1R3 w - - "] 1. axb8N {win} [Result "10"] [FEN "1N4K1/1pp1p3/7k/2r3pP/p2pp1P1/P6N/8/2B5 w - - "] 1. Nc6 {draw - no gain} [Result "11"] [FEN "5K2/k4p1p/5p1p/1p3p2/bP6/1p6/1P5p/7B w - - "] 1. Ke8 {or 1. Ke7 win} [Result "12"] [FEN "k1b5/1p1p1p1p/1PpPpP2/2B5/8/2p1p2P/2PbP3/3K4 w - - "] 1. Bd4 {win} [Result "13"] [FEN "8/8/8/8/1kB1q3/8/1PRb4/1K6 b - - "] 1... Qh1 2. Ka2 Qa8 3.Kb1 Qe4 {or other way to get the start position for white - win} [Result "14"] [FEN "8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - "] 1. Bh5 {win} [Result "15"] [FEN "4k1rr/1R1R3p/8/8/8/2K5/7P/8 w k - "] 1. Rd2 {win} [Result "16"] [FEN "5k2/4bp2/2B3p1/1P4p1/3R4/3P2PP/2r2PK1/8 b - - "] 1. Rxf2 {draw - no gain} [Result "17"] [FEN "1b6/2p5/1kB5/1PN5/8/3K4/8/q7 w - - "] 1. Nb3 {draw - no gain} [Result "18"] [FEN "N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - "] 1. f4 {draw - no gain} [Result "19"] [FEN "2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - "] 1. Nd6 {draw - no gain} [Result "20"] [FEN "8/8/4B3/6p1/7k/8/4pPKP/8 w - - "] 1. Bg4 {draw - no gain} [Result "21"] [FEN "r7/7k/5R2/p3p3/Pp1pPp2/1PpP1Pp1/K1P3P1/8 w - - "] 1. Kb1 Kg7 2. Rh6 {or 1... Rh8 2. Rf8 draw - no gain} [Result "22"] [FEN "1K3kB1/8/6p1/7R/8/4b3/8/6n1 w - - "] 1. Rh8 Kg7 2. Bh7 {draw - no gain} [Result "23"] [FEN "8/8/R7/1b4k1/5p2/1B3r2/7P/7K w - - "] 1. h4 Kxh4 2. Rh6 Kg5 3. Rh5 {draw - no gain} [Result "24"] [FEN "7Q/4p3/4p3/p1p1P3/Pp2P3/3Kp3/p1PbP3/kN6 w - - "] 1. Na3 bxa3 2. Qh1 Kb2 3. Qa1 Kxa1 4. c4 {draw - no gain} [Result "25"] [FEN "7r/K7/5k1n/p3p3/Pp1pPp1p/1PpP1PpP/2P3P1/N1RR1B2 b - - "] {win} [Result "26"] [FEN "q7/b1p5/kp1p4/p2PN3/PPP5/1K6/8/5B2 w - - "] 1. c5 Kb7 2. Ba6 {win - no draw} [Result "27"] [FEN "1k1n4/1p1b1p2/1Bp1pPp1/1PP1P3/8/6P1/8/1K6 w - - "] 1. Bc7 Ka7 2. Bb8 {win - no draw} [Result "28"] [FEN "4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - "] 1. Qxe5 {win} [Result "29"] [FEN "q1b4n/1p1pKp2/1p1p1Pp1/1P1P2Pp/2P4P/8/7R/1N1k4 w - - "] 1. Ra2 {win} [Result "30"] [FEN "3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - "] 1. Nd4 {win} [Result "31"] [FEN "8/7p/6pP/p4pP1/3BpP2/p1KpP3/pn1N4/k7 w - - "] 1. Bh8 {win} [Result "32"] [FEN "8/6p1/p7/rp1K2p1/kb3pP1/2p2p1b/P1Np1P2/3N2R1 w - - "] 1. Ke6 {or 1. Ke4 win} [Result "33"] [FEN "B7/p1p5/k2p4/p3p3/P1Nb1p2/6p1/7p/4K3 w - - "] {Ke1->h3->c8 win} [Result "34"] [FEN "1qN5/b1pB4/1pP2k2/pP3P2/P1P5/8/8/K7 w - - "] {Ka1->h5->d8 win} [Result "35"] [FEN "8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - "] 1. Nf6 {win} [Result "36"] [FEN "8/5K2/3p3p/3p3P/pp1P4/rkb1R3/p1p3P1/n1B2B2 w - - "] 1. Rd3 {win} [Result "37"] [FEN "6bn/p4p1k/rp3Pp1/rp2BBP1/1p6/pK6/P2P4/8 w - - "] 1. Bc8 {win} [Result "38"] [FEN "qn6/b1Kp3p/p1pB3p/p7/P1NkP3/2pP4/2B5/8 w - - "] 1. Bf4 {or 1. Kc8 win} [Result "39"] [FEN "8/P7/4k3/8/5P2/4Bq2/5P2/5K2 b - - "] 1... Kf5 {win} [Result "40"] [FEN "8/6kP/1p6/p7/Pr6/K2B4/8/8 b - - "] 1... Rh4 {next Kg7->f6->e5 win} [Result "41"] [FEN "8/8/2b1N3/5p2/3B4/2K5/6kp/R7 w - - "] 1. Rh1 {win} [Result "42"] [FEN "8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - "] 1... Bh3 {win} [Result "43"] [FEN "5rk1/5ppp/p1Q1p3/1R6/q7/4b1P1/P2RPP1P/6K1 w - - "] 1. Rd8 {win} [Result "44"] [FEN "r7/1b1r4/k1p1p1p1/1p1pPpPp/p1PP1P1P/PP1K4/8/4Q3 w - - "] 1. Qa5 {draw - no gain} [Result "45"] [FEN "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P4P/PPB1K3/8 w - - "] 1. Ba4 {draw - no gain} [Result "46"] [FEN "2k5/2p5/1q1p4/pPpPp1pp/N1P1Pp2/P4PbP/KQ4P1/8 w - - "] {avoid Nxb6 win} [Result "47"] [FEN "1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - "] 1... Rxb3 {win} [Result "48"] [FEN "8/5k2/6p1/4BP1p/6p1/p1p3PP/6P1/1n2K2R b K - "] 1... a2 2. fxg6 Kg8 {win} [Result "49"] [FEN "8/3k1b1r/2p1p1p1/rpPpPpPp/p2P1P1P/P2K4/8/4B3 w - - "] 1. Bb4 {draw - no gain} [Result "50"] [FEN "7b/p1p1p3/P1PpPp2/2nP1kpr/5P1p/p3KBPP/P7/8 w - - "] 1. Be4 {draw - no gain} [Result "51"] [FEN "7r/p1p1p1pk/3pPp1p/2pP1PP1/P1P4P/1K6/P6B/8 w - - "] 1. g6 Kg8 2. a5 a6 3. Bxd6 cxd6 4. h5 {or 2. Bxd6 cxd6 3. h5 draw - no gain} [Result "52"] [FEN "8/1p1q1k2/1Pp5/p1Pp4/P2Pp1p1/4PpPp/1N3P1P/3B2K1 w - - "] 1. Bb3 Qc8 2. Nd1 Qa8 3. Bc4 {draw - no gain} [Result "53"] [FEN "8/8/2pk4/8/p1p3B1/PpP5/1P6/r1NK4 w - - "] 1. Bf5 Ra2 2. Nxa2 bxa2 3. Kc1 a1Q 4. Bb1 {draw - no gain} [Result "54"] [FEN "1R3b2/5ppQ/6Pp/6PP/R6P/P7/7K/2q1k3 w - - "] 1. Rb1 Qxb1 2. gxf7 {win} [Result "55"] [FEN "Kn6/8/8/3R2PB/8/2p2NP1/1q6/2k5 w - - "] 1. Rd1 {draw - no gain} [Result "56"] [FEN "1B3B1B/2B5/p6B/8/8/8/8/1k1K4 w - - "] 1. Bce5 {win} [Result "57"] [FEN "4kr2/5p1K/3p1Q2/1p4P1/4P3/1PP5/7b/8 w - - "] 1. Kh6 {win} [Result "58"] [FEN "6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - "] 1. Bf8 {win} [Result "59"] [FEN "n2Bqk2/5p1p/Q4KP1/p7/8/8/8/8 w - - "] 1. Qc8 Kg8 2. Bc7 {win} [Result "60"] [FEN "8/5p2/8/8/p7/rpK4p/1p3ppr/bQ1N1bqk w - - "] 1. Kb4 {or 1. Kd4 win} [Result "61"] [FEN "8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - "] 1. Kc6 {draw - no gain} [Result "62"] [FEN "1R6/pPk1r3/2p5/K7/8/2B1b3/8/8 w - - "] 1. Ka6 {draw - no gain} [Result "63"] [FEN "8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - "] 1. Ba5 {win} [Result "64"] [FEN "2N5/p7/P7/8/1KPp1p1p/3p1Bpp/3P2rq/R5bk w - - "] 1. Nb6 {win} [Result "65"] [FEN "5kN1/3p1q2/5P2/5PP1/2pK4/1p1R4/1P6/8 w - - "] 1. Rxb3 {win} [Result "66"] [FEN "2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - "] 1. f6 {win} [Result "67"] [FEN "2r5/prkpR1p1/2p1ppK1/P1p1N1B1/P1P1P3/8/8/8 w - - "] 1. Bf4 {win} [Result "68"] [FEN "rk1b4/p2p2p1/1P6/2R2P2/8/2K5/8/5B2 w - - "] 1. Rc8 {win} [Result "69"] [FEN "3k4/4pp2/n2n4/5BN1/3N4/b7/4K3/8 w - - "] 1. Nxf7 {draw - no gain} [Result "70"] [FEN "8/1P6/8/1b1K4/6p1/5pP1/5P1B/7k w - - "] 1. b8R {win} [Result "71"] [FEN "8/5pKN/5Pp1/5kP1/8/Bb6/8/7q w - - "] 1. Bc5 {any move} Qxh7+ {Black wins} [Result "72"] [FEN "8/p5p1/1pP3p1/p5p1/k3p3/4p3/K7/8 w - - "] 1. c7 {win} [Result "73"] [FEN "q7/8/2p5/B2p2pp/5pp1/2N3k1/6P1/7K w - - "] 1. Ne4 Kh4 2. Ng3 fxg3 3. Bb6 {draw - no gain} [Result "74"] [FEN "q7/7R/k7/1p6/1p6/1P2B3/7K/8 w - - "] 1. Bd4 {win} [Result "75"] [FEN "1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - "] 1. Rxf6 {win} [Result "76"] [FEN "1r3q1k/2N2P1p/6pQ/4p3/7p/n6P/3B4/7K w - - "] 1. Qf4 {win} [Result "77"] [FEN "5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - "] 1. c8N {win} [Result "78"] [FEN "2K3k1/1p6/R3p1p1/1rB1P1P1/8/8/1Pb5/8 w - - "] 1. Rc6 {draw - no gain} [Result "79"] [FEN "4q3/2r1r2p/3P3P/1p6/kP6/Pp6/1P6/KB2R3 w - - "] 1. Rxe7 Qxe7 2. dxc7 {draw - no gain} [Result "80"] [FEN "3k4/8/7p/2p1p1pP/1pPpPpP1/1P1P1P2/N7/2K5 w - - "] {Na2->h4 win - gain} [Result "81"] [FEN "8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/1P1P3P/QNK2NRR w - -"] {win - gain} [Result "82"] [FEN "4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - -"] 1. a8B {win} [Result "83"] [FEN "4N2k/4PB1p/7P/B1p5/2P5/3q2Pp/1P3P1K/2r5 w - -"] 1... Bc3 2. Rxc3 Nc7 {win} [Result "84"] [FEN "1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - -"] 1... Rxh1 {draw - no gain}[/pgn]

[lech]

The "IQ" test (added new 4 items) is a very important part of my project.

Of course, I am not the author of items of the "IQ" test. I only selected the items. They were inserted here by you.
Thanks! Maybe here are some valuable studies. I will take a look at this.

[lech]

authors of studies selected to "IQ" test by YACPDB:

Blathy Otto - 2, 11, 12
Benko Pal - 15, 74
Hasek Josef - 21, 27
Gurvich Abram - 22
Kasparjan Genrich - 23
Neghina Mihai - 26
Grasemann Herbert - 36
Rudolph William - 45
Troickij Aleksiej - 56
Reti Richard - 57
Matous Mario - 59
Betins Karlis - 61
Kljackin Mihail - 65
Kubbel Karl - 68
Novomesky Daniel - 72
Lazard Frederic - 73
Marwitz Jan - 78
Lamford Paul - 81

[Kornrade]

Nice list

Betins Karlis - 61

I think this should be K.K.Behting
https://en.chessbase.com/post/john-nunn ... y-is-sound

Neghina Mihai - 26

You can add 10, 30 and 83 here (Kornrade Set http://talkchess.com/forum3/viewtopic.php?f=2&t=68424)

Best Regards

[lech]

Thanks!

The authors of studies selected to "IQ" test:

by YACPDB:

Blathy Otto - 2, 11, 12
Benko Pal - 15, 74
Hasek Josef - 21, 27
Gurvich Abram - 22
Kasparyan Genrikh - 23
Neghina Mihai - 26
Grasemann Herbert - 36
Rudolph William - 45
Troitzky Aleksei - 56
Reti Richard - 57
Matous Mario - 59
Behting Carl - 61
Klyackin Mihail - 65
Kubbel Karl - 68
Novomesky Daniel - 72
Lazard Frederic - 73
Marwitz Jan - 78
Lamford Paul - 81
Popov Georgy & Hanyan Aleksei (part of study) - 38

by other sources (Talkchess.com):

Hoch Yehuda & Aloni Hillel - 54
Neghina Mihai - 10, 30, 83

BTW. I hope that the main goal of project Sting is liked too.

[Paloma]

Thanks for this new Version, Marek.

[Kornrade]

BTW. I hope that the main goal of project Sting is liked too.

Yes* ( with an asterisk )
I have not used Sting, but I followed (sparsely) reports on its successes with various positions, both mine and others.
Also keep in mind that I am on the opposite side of the struggle

Keep up the good work!

[lech]

Also keep in mind that I am on the opposite side of the struggle

I respect you by your fantasic work. More, I am "Always On Your Side".

[lech]

I added two new very valuable positions to the "IQ" test and I had to modify a bit the code of Sting.

NEW Sting SF 10.1 is here: http://www.mediafire.com/file/sgjdyu6qu ... 1.zip/file

"IQ" test:
[pgn][Result "1"] [FEN "7k/6rp/6pN/1r4P1/3B4/8/8/K7 b - - "] 1... Rxg5 {win} [Result "2"] [FEN "1B1k4/3p4/1Kp5/PpP2p2/1PqP1P2/8/1P6/8 w - - "] 1. a6 {win} [Result "3"] [FEN "3N2r1/2K1p3/4Pk2/8/Bp5b/8/2P5/8 b - - "] 1... Bg3 2. Kd7 Rxd8 {win} [Result "4"] [FEN "8/7p/5P1k/1p5P/5p2/2p1p3/P1P1P1P1/1K3Nb1 w - - "] 1. Ng3 {win} [Result "5"] [FEN "6q1/PpB5/k7/P6K/6n1/1P4p1/5p2/1B3N1N w - - "] 1. a8Q {or 1. a8R win} [Result "6"] [FEN "6k1/6p1/4Rb1p/p7/rp2P1N1/2P3P1/1P5P/6K1 b - - "] 1... Bxc3 {win} [Result "7"] [FEN "8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - "] 1. Ng2 {win} [Result "8"] [FEN "2k5/p7/Pp1p1b2/1P1P1p2/2P2P1p/3K3P/5B2/8 w - - "] 1. c5 {win} [Result "9"] [FEN "1n6/Pp1p1p1p/1P1P1P1P/4K3/2p5/p7/rpp1P3/qkb1R3 w - - "] 1. axb8N {win} [Result "10"] [FEN "1N4K1/1pp1p3/7k/2r3pP/p2pp1P1/P6N/8/2B5 w - - "] 1. Nc6 {draw - no gain} [Result "11"] [FEN "5K2/k4p1p/5p1p/1p3p2/bP6/1p6/1P5p/7B w - - "] 1. Ke8 {or 1. Ke7 win} [Result "12"] [FEN "k1b5/1p1p1p1p/1PpPpP2/2B5/8/2p1p2P/2PbP3/3K4 w - - "] 1. Bd4 {win} [Result "13"] [FEN "8/8/8/8/1kB1q3/8/1PRb4/1K6 b - - "] 1... Qh1 2. Ka2 Qa8 3.Kb1 Qe4 {or other way to get the start position for white - win} [Result "14"] [FEN "8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - "] 1. Bh5 {win} [Result "15"] [FEN "4k1rr/1R1R3p/8/8/8/2K5/7P/8 w k - "] 1. Rd2 {win} [Result "16"] [FEN "5k2/4bp2/2B3p1/1P4p1/3R4/3P2PP/2r2PK1/8 b - - "] 1. Rxf2 {draw - no gain} [Result "17"] [FEN "1b6/2p5/1kB5/1PN5/8/3K4/8/q7 w - - "] 1. Nb3 {draw - no gain} [Result "18"] [FEN "N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - "] 1. f4 {draw - no gain} [Result "19"] [FEN "2b1r3/r2ppN2/8/1p1p1k2/pP1P4/2P3R1/PP3PP1/2K5 w - - "] 1. Nd6 {draw - no gain} [Result "20"] [FEN "8/8/4B3/6p1/7k/8/4pPKP/8 w - - "] 1. Bg4 {draw - no gain} [Result "21"] [FEN "r7/7k/5R2/p3p3/Pp1pPp2/1PpP1Pp1/K1P3P1/8 w - - "] 1. Kb1 Kg7 2. Rh6 {or 1... Rh8 2. Rf8 draw - no gain} [Result "22"] [FEN "1K3kB1/8/6p1/7R/8/4b3/8/6n1 w - - "] 1. Rh8 Kg7 2. Bh7 {draw - no gain} [Result "23"] [FEN "8/8/R7/1b4k1/5p2/1B3r2/7P/7K w - - "] 1. h4 Kxh4 2. Rh6 Kg5 3. Rh5 {draw - no gain} [Result "24"] [FEN "7Q/4p3/4p3/p1p1P3/Pp2P3/3Kp3/p1PbP3/kN6 w - - "] 1. Na3 bxa3 2. Qh1 Kb2 3. Qa1 Kxa1 4. c4 {draw - no gain} [Result "25"] [FEN "7r/K7/5k1n/p3p3/Pp1pPp1p/1PpP1PpP/2P3P1/N1RR1B2 b - - "] {win} [Result "26"] [FEN "q7/b1p5/kp1p4/p2PN3/PPP5/1K6/8/5B2 w - - "] 1. c5 Kb7 2. Ba6 {win - no draw} [Result "27"] [FEN "1k1n4/1p1b1p2/1Bp1pPp1/1PP1P3/8/6P1/8/1K6 w - - "] 1. Bc7 Ka7 2. Bb8 {win - no draw} [Result "28"] [FEN "4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - "] 1. Qxe5 {win} [Result "29"] [FEN "q1b4n/1p1pKp2/1p1p1Pp1/1P1P2Pp/2P4P/8/7R/1N1k4 w - - "] 1. Ra2 {win} [Result "30"] [FEN "3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - "] 1. Nd4 {win} [Result "31"] [FEN "8/7p/6pP/p4pP1/3BpP2/p1KpP3/pn1N4/k7 w - - "] 1. Bh8 {win} [Result "32"] [FEN "8/6p1/p7/rp1K2p1/kb3pP1/2p2p1b/P1Np1P2/3N2R1 w - - "] 1. Ke6 {or 1. Ke4 win} [Result "33"] [FEN "B7/p1p5/k2p4/p3p3/P1Nb1p2/6p1/7p/4K3 w - - "] {Ke1->h3->c8 win} [Result "34"] [FEN "1qN5/b1pB4/1pP2k2/pP3P2/P1P5/8/8/K7 w - - "] {Ka1->h5->d8 win} [Result "35"] [FEN "8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - "] 1. Nf6 {win} [Result "36"] [FEN "8/5K2/3p3p/3p3P/pp1P4/rkb1R3/p1p3P1/n1B2B2 w - - "] 1. Rd3 {win} [Result "37"] [FEN "6bn/p4p1k/rp3Pp1/rp2BBP1/1p6/pK6/P2P4/8 w - - "] 1. Bc8 {win} [Result "38"] [FEN "qn6/b1Kp3p/p1pB3p/p7/P1NkP3/2pP4/2B5/8 w - - "] 1. Bf4 {or 1. Kc8 win} [Result "39"] [FEN "8/P7/4k3/8/5P2/4Bq2/5P2/5K2 b - - "] 1... Kf5 {win} [Result "40"] [FEN "8/6kP/1p6/p7/Pr6/K2B4/8/8 b - - "] 1... Rh4 {next Kg7->f6->e5 win} [Result "41"] [FEN "8/8/2b1N3/5p2/3B4/2K5/6kp/R7 w - - "] 1. Rh1 {win} [Result "42"] [FEN "8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - "] 1... Bh3 {win} [Result "43"] [FEN "5rk1/5ppp/p1Q1p3/1R6/q7/4b1P1/P2RPP1P/6K1 w - - "] 1. Rd8 {win} [Result "44"] [FEN "r7/1b1r4/k1p1p1p1/1p1pPpPp/p1PP1P1P/PP1K4/8/4Q3 w - - "] 1. Qa5 {draw - no gain} [Result "45"] [FEN "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P4P/PPB1K3/8 w - - "] 1. Ba4 {draw - no gain} [Result "46"] [FEN "2k5/2p5/1q1p4/pPpPp1pp/N1P1Pp2/P4PbP/KQ4P1/8 w - - "] {avoid Nxb6 win} [Result "47"] [FEN "1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - "] 1... Rxb3 {win} [Result "48"] [FEN "8/5k2/6p1/4BP1p/6p1/p1p3PP/6P1/1n2K2R b K - "] 1... a2 2. fxg6 Kg8 {win} [Result "49"] [FEN "8/3k1b1r/2p1p1p1/rpPpPpPp/p2P1P1P/P2K4/8/4B3 w - - "] 1. Bb4 {draw - no gain} [Result "50"] [FEN "7b/p1p1p3/P1PpPp2/2nP1kpr/5P1p/p3KBPP/P7/8 w - - "] 1. Be4 {draw - no gain} [Result "51"] [FEN "7r/p1p1p1pk/3pPp1p/2pP1PP1/P1P4P/1K6/P6B/8 w - - "] 1. g6 Kg8 2. a5 a6 3. Bxd6 cxd6 4. h5 {or 2. Bxd6 cxd6 3. h5 draw - no gain} [Result "52"] [FEN "8/1p1q1k2/1Pp5/p1Pp4/P2Pp1p1/4PpPp/1N3P1P/3B2K1 w - - "] 1. Bb3 Qc8 2. Nd1 Qa8 3. Bc4 {draw - no gain} [Result "53"] [FEN "8/8/2pk4/8/p1p3B1/PpP5/1P6/r1NK4 w - - "] 1. Bf5 Ra2 2. Nxa2 bxa2 3. Kc1 a1Q 4. Bb1 {draw - no gain} [Result "54"] [FEN "1R3b2/5ppQ/6Pp/6PP/R6P/P7/7K/2q1k3 w - - "] 1. Rb1 Qxb1 2. gxf7 {win} [Result "55"] [FEN "Kn6/8/8/3R2PB/8/2p2NP1/1q6/2k5 w - - "] 1. Rd1 {draw - no gain} [Result "56"] [FEN "1B3B1B/2B5/p6B/8/8/8/8/1k1K4 w - - "] 1. Bce5 {win} [Result "57"] [FEN "4kr2/5p1K/3p1Q2/1p4P1/4P3/1PP5/7b/8 w - - "] 1. Kh6 {win} [Result "58"] [FEN "6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - "] 1. Bf8 {win} [Result "59"] [FEN "n2Bqk2/5p1p/Q4KP1/p7/8/8/8/8 w - - "] 1. Qc8 Kg8 2. Bc7 {win} [Result "60"] [FEN "8/5p2/8/8/p7/rpK4p/1p3ppr/bQ1N1bqk w - - "] 1. Kb4 {or 1. Kd4 win} [Result "61"] [FEN "8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - "] 1. Kc6 {draw - no gain} [Result "62"] [FEN "1R6/pPk1r3/2p5/K7/8/2B1b3/8/8 w - - "] 1. Ka6 {draw - no gain} [Result "63"] [FEN "8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - "] 1. Ba5 {win} [Result "64"] [FEN "2N5/p7/P7/8/1KPp1p1p/3p1Bpp/3P2rq/R5bk w - - "] 1. Nb6 {win} [Result "65"] [FEN "5kN1/3p1q2/5P2/5PP1/2pK4/1p1R4/1P6/8 w - - "] 1. Rxb3 {win} [Result "66"] [FEN "2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - "] 1. f6 {win} [Result "67"] [FEN "2r5/prkpR1p1/2p1ppK1/P1p1N1B1/P1P1P3/8/8/8 w - - "] 1. Bf4 {win} [Result "68"] [FEN "rk1b4/p2p2p1/1P6/2R2P2/8/2K5/8/5B2 w - - "] 1. Rc8 {win} [Result "69"] [FEN "3k4/4pp2/n2n4/5BN1/3N4/b7/4K3/8 w - - "] 1. Nxf7 {draw - no gain} [Result "70"] [FEN "8/1P6/8/1b1K4/6p1/5pP1/5P1B/7k w - - "] 1. b8R {win} [Result "71"] [FEN "8/5pKN/5Pp1/5kP1/8/Bb6/8/7q w - - "] 1. Bc5 {any move} Qxh7+ {Black wins} [Result "72"] [FEN "8/p5p1/1pP3p1/p5p1/k3p3/4p3/K7/8 w - - "] 1. c7 {win} [Result "73"] [FEN "q7/8/2p5/B2p2pp/5pp1/2N3k1/6P1/7K w - - "] 1. Ne4 Kh4 2. Ng3 fxg3 3. Bb6 {draw - no gain} [Result "74"] [FEN "q7/7R/k7/1p6/1p6/1P2B3/7K/8 w - - "] 1. Bd4 {win} [Result "75"] [FEN "1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - "] 1. Rxf6 {win} [Result "76"] [FEN "1r3q1k/2N2P1p/6pQ/4p3/7p/n6P/3B4/7K w - - "] 1. Qf4 {win} [Result "77"] [FEN "5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - "] 1. c8N {win} [Result "78"] [FEN "2K3k1/1p6/R3p1p1/1rB1P1P1/8/8/1Pb5/8 w - - "] 1. Rc6 {draw - no gain} [Result "79"] [FEN "4q3/2r1r2p/3P3P/1p6/kP6/Pp6/1P6/KB2R3 w - - "] 1. Rxe7 Qxe7 2. dxc7 {draw - no gain} [Result "80"] [FEN "3k4/8/7p/2p1p1pP/1pPpPpP1/1P1P1P2/N7/2K5 w - - "] {Na2->h4 win - gain} [Result "81"] [FEN "8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/1P1P3P/QNK2NRR w - -"] {win - gain} [Result "82"] [FEN "4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - -"] 1. a8B {win} [Result "83"] [FEN "4N2k/4PB1p/7P/B1p5/2P5/3q2Pp/1P3P1K/2r5 w - -"] 1... Bc3 2. Rxc3 Nc7 {win} [Result "84"] [FEN "1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - -"] 1... Rxh1 {draw - no gain} [Result "85"] [FEN "N3kb2/pq4p1/4B1P1/1p1P2B1/p7/3P4/2P5/2K5 w - -"] 1. Bf7 Kd7 2. Be6 Kd6 3. Bf4 Kc5 4. Be3 Kb4 5. Bd2 Ka3 6. Kb1 {draw - no gain} [Result "86"] [FEN "8/1B3b1p/7P/p2p4/P2pp1kp/Q7/1N1Pq2P/7K w - -"] 1. Qh3 {draw - no gain}[/pgn]

The authors of studies selected to the "IQ" test:

by YACPDB:

Blathy Otto - 2, 11, 12
Benko Pal - 15, 74
Hasek Josef - 21, 27
Gurvich Abram - 22
Kasparyan Genrikh - 23
Neghina Mihai - 26
Grasemann Herbert - 36
Rudolph William - 45
Troitzky Aleksei - 56
Reti Richard - 57
Matous Mario - 59
Behting Carl - 61
Klyackin Mihail - 65
Kubbel Karl - 68
Novomesky Daniel - 72
Lazard Frederic - 73
Marwitz Jan - 78
Lamford Paul - 81
Simkhovich Froim - 85
Popov Georgy & Hanyan Aleksei (part of study) - 38

by other sources (Talkchess.com):

Hoch Yehuda & Aloni Hillel - 54
Neghina Mihai - 10, 30, 83, 86
Surya Sekhar Ganguly - 80

[peter]

Hi Marek!

I added two new very valuable positions to the "IQ" test and I had to modify a bit the code of Sting.

Thanks for the new version.
So your code- modifying was for "Fishing Rod" (IQ 86, Chichitza 17) too, I guess, wasn't it?
At least 10.1 now finds that much faster than 10 did.

IQ 30 (Chichitza 1, "Constrictor") is a great achievement of Sting's to solve this really hard puzzle almost at once.
Congrats!

Best regards