Sting SF 25

[lech]

https://www.mediafire.com/file/akax2egr ... 5.zip/file

[lech]

[pgn][Result "1"] [FEN "rkr5/p5p1/Pp4Kp/8/3B4/1B6/8/8 w - - 0 1"] 1. Be5 {win}
[Result "2"] [FEN "7k/6rp/6pN/1r4P1/3B4/8/8/K7 b - - 0 1"] 1... Rxg5
[Result "3"] [FEN "1B1k4/3p4/1Kp5/PpP2p2/1PqP1P2/8/1P6/8 w - - 0 1"] 1. a6 {win}
[Result "4"] [FEN "3N2r1/2K1p3/4Pk2/8/Bp5b/8/2P5/8 b - - 0 1"] 1... Bg3 2. Kd7 {or Kc8} Rxd8
[Result "5"] [FEN "8/7p/5P1k/1p5P/5p2/2p1p3/P1P1P1P1/1K3Nb1 w - - 0 1"] 1. Ng3
[Result "6"] [FEN "6q1/PpB5/k7/P6K/6n1/1P4p1/5p2/1B3N1N w - - 0 1"] 1. a8Q {or a8R}
[Result "7"] [FEN "6k1/6p1/4Rb1p/p7/rp2P1N1/2P3P1/1P5P/6K1 b - - 0 1"] 1... Bxc3
[Result "8"] [FEN "8/8/p2k1p2/1p1p3p/1P1P3p/P3NPP1/5K2/1b6 w - - 0 1"] 1. Ng2
[Result "9"] [FEN "2k5/p7/Pp1p1b2/1P1P1p2/2P2P1p/3K3P/5B2/8 w - - 0 1"] 1. c5
[Result "10"] [FEN "1n6/Pp1p1p1p/1P1P1P1P/4K3/2p5/p7/rpp1P3/qkb1R3 w - - 0 1"] 1. axb8N {win}
[Result "11"] [FEN "1N4K1/1pp1p3/7k/2r3pP/p2pp1P1/P6N/8/2B5 w - - 0 1"] 1. Nc6
[Result "12"] [FEN "5K2/k4p1p/5p1p/1p3p2/bP6/1p6/1P5p/7B w - - 0 1"] 1. Ke8 {or Ke7 win}
[Result "13"] [FEN "k1b5/1p1p1p1p/1PpPpP2/2B5/8/2p1p2P/2PbP3/3K4 w - - 0 1"] 1. Bd4 {win}
[Result "14"] [FEN "8/8/8/8/1kB1q3/8/1PRb4/1K6 b - - 0 1"] 1... Qh1 2. Ka2 Qa8 3.Kb1 Qe4 {or other way to get the position for white}
[Result "15"] [FEN "8/2N4r/1p3pkp/8/5K1p/2P4N/P3Bn2/8 w - - 0 1"] 1. Bh5
[Result "16"] [FEN "4k1rr/1R1R3p/8/8/8/2K5/7P/8 w k - 0 1"] 1. Rd2
[Result "17"] [FEN "5k2/4bp2/2B3p1/1P4p1/3R4/3P2PP/2r2PK1/8 b - - 0 1"] 1... Rxf2
[Result "18"] [FEN "1b6/2p5/1kB5/1PN5/8/3K4/8/q7 w - - 0 1"] 1. Nb3
[Result "19"] [FEN "N7/8/2KQ2rp/6k1/3p3p/2p4P/4PP2/5N2 w - - 0 1"] 1. f4
[Result "20"] [FEN "2br4/r2pp3/8/1p1p1kN1/pP1P4/2P3R1/PP3PP1/2K5 w - - 0 1"] 1. Nf7 Re8 2. Nd6
[Result "21"] [FEN "8/8/4B3/6p1/7k/8/4pPKP/8 w - - 0 1"] 1. Bg4
[Result "22"] [FEN "r7/7k/5R2/p3p3/Pp1pPp2/1PpP1Pp1/K1P3P1/8 w - - 0 1"] 1. Kb1 Kg7 {or 1... Rh8 2. Rf8} 2. Rh6
[Result "23"] [FEN "1K3kB1/8/6p1/7R/8/4b3/8/6n1 w - - 0 1"] 1. Rh8 Kg7 2. Bh7
[Result "24"] [FEN "8/8/R7/1b4k1/5p2/1B3r2/7P/7K w - - 0 1"] 1. h4 Kxh4 2. Rh6 Kg5 3. Rh5
[Result "25"] [FEN "7Q/4p3/4p3/p1p1P3/Pp2P3/3Kp3/p1PbP3/kN6 w - - 0 1"] 1. Na3 bxa3 2. Qh1 Kb2 3. Qa1 Kxa1 4. c4
[Result "26"] [FEN "4q1bk/PP4p1/1p4P1/8/1p3QPP/2Pp4/3P1pP1/K7 w - - 0 1"] {1.a8R {-> b8R}
[Result "27"] [FEN "q7/b1p5/kp1p4/p2PN3/PPP5/1K6/8/5B2 w - - 0 1"] 1. c5 Kb7 2. Ba6 {win}
[Result "28"] [FEN "1k1n4/1p1b1p2/1Bp1pPp1/1PP1P3/8/6P1/8/1K6 w - - 0 1"] 1. Bc7 {win}
[Result "29"] [FEN "4q1kr/p6p/1prQPppB/4n3/4P3/2P5/PP2B2P/R5K1 w - - 0 1"] 1. Qxe5 {win}
[Result "30"] [FEN "q1b4n/1p1pKp2/1p1p1Pp1/1P1P2Pp/2P4P/8/7R/1N1k4 w - - 0 1"] 1. Ra2 {win}
[Result "31"] [FEN "3k4/2pq3p/pp5R/4P3/P6P/2PN4/1PN3K1/8 w - - 0 1"] 1. Nd4 {win}
[Result "32"] [FEN "8/7p/6pP/p4pP1/3BpP2/p1KpP3/pn1N4/k7 w - - 0 1"] 1. Bh8 {win}
[Result "33"] [FEN "8/6p1/p7/rp1K2p1/kb3pP1/2p2p1b/P1Np1P2/3N2R1 w - - 0 1"] 1. Ke6 {or Ke4 win}
[Result "34"] [FEN "B7/p1p5/k2p4/p3p3/P1Nb1p2/6p1/7p/4K3 w - - 0 1"] {Ke1->c8}
[Result "35"] [FEN "1qN5/b1pB4/1pP2k2/pP3P2/P1P5/8/8/K7 w - - 0 1"] {Ka1->h5->d8}
[Result "36"] [FEN "8/3P3k/n2K3p/2p3n1/1b4N1/2p1p1P1/8/3B4 w - - 0 1"] 1. Nf6
[Result "37"] [FEN "8/5K2/3p3p/3p3P/pp1P4/rkb1R3/p1p3P1/n1B2B2 w - - 0 1"] 1. Rd3 {win}
[Result "38"] [FEN "6bn/p4p1k/rp3Pp1/rp2BBP1/1p6/pK6/P2P4/8 w - - 0 1"] 1. Bc8 {win}
[Result "39"] [FEN "6K1/3p1pPN/r7/1p3kP1/8/1P4b1/2P1P3/8 w - - 0 1"] 1. e4 Ke6 2. Nf8 Ke7 3. Kh7 Ra8 4. g8Q Rxf8 5. Qg7 {win}
[Result "40"] [FEN "8/P7/4k3/8/5P2/4Bq2/5P2/5K2 b - - 0 1"] 1... Kf5
[Result "41"] [FEN "8/6kP/1p6/p7/Pr6/K2B4/8/8 b - - 0 1"] {Rb4->h4 and next Kg7->e5}
[Result "42"] [FEN "8/8/2b1N3/5p2/3B4/2K5/6kp/R7 w - - 0 1"] 1. Rh1
[Result "43"] [FEN "8/8/4kpp1/3p1b2/p6P/2B5/6P1/6K1 b - - 0 1"] 1... Bh3
[Result "44"] [FEN "5rk1/5ppp/p1Q1p3/1R6/q7/4b1P1/P2RPP1P/6K1 w - - 0 1"] 1. Rd8 {win}
[Result "45"] [FEN "r7/1b1r4/k1p1p1p1/1p1pPpPp/p1PP1P1P/PP1K4/8/4Q3 w - - 0 1"] 1. Qa5
[Result "46"] [FEN "3B4/1r2p3/r2p1p2/bkp1P1p1/1p1P1PPp/p1P4P/PPB1K3/8 w - - 0 1"] 1. Ba4
[Result "47"] [FEN "2k5/2p5/1q1p4/pPpPp1pp/N1P1Pp2/P4PbP/KQ4P1/8 w - - 0 1"] {avoid Nxb6}
[Result "48"] [FEN "1r6/4k3/r2p2p1/2pR1p1p/2P1pP1P/pPK1P1P1/P7/1B6 b - - 0 1"] 1... Rxb3
[Result "49"] [FEN "8/5k2/6p1/4BP1p/6p1/p1p3PP/6P1/1n2K2R b K - 0 1"] 1... a2 2. fxg6 Kg8
[Result "50"] [FEN "8/3k1b1r/2p1p1p1/rpPpPpPp/p2P1P1P/P2K4/8/4B3 w - - 0 1"] 1. Bb4
[Result "51"] [FEN "7b/p1p1p3/P1PpPp2/2nP1kpr/5P1p/p3KBPP/P7/8 w - - 0 1"] 1. Be4
[Result "52"] [FEN "7r/p1p1p1pk/3pPp1p/2pP1PP1/P1P4P/1K6/P6B/8 w - - 0 1"] 1. g6 Kg8 2. a5 a6 3. Bxd6 cxd6 4. h5 {or 2. Bxd6 cxd6 3. h5}
[Result "53"] [FEN "8/1p1q1k2/1Pp5/p1Pp4/P2Pp1p1/4PpPp/1N3P1P/3B2K1 w - - 0 1"] 1. Bb3 Qc8 2. Nd1 Qa8 3. Bc4
[Result "54"] [FEN "8/8/2pk4/8/p1p3B1/PpP5/1P6/r1NK4 w - - 0 1"] 1. Bf5 Ra2 2. Nxa2 bxa2 3. Kc1 a1Q 4. Bb1
[Result "55"] [FEN "1R3b2/5ppQ/6Pp/6PP/R6P/P7/7K/2q1k3 w - - 0 1"] 1. Rb1 Qxb1 2. gxf7
[Result "56"] [FEN "Kn6/8/8/3R2PB/8/2p2NP1/1q6/2k5 w - - 0 1"] 1. Rd1
[Result "57"] [FEN "1B3B1B/2B5/p6B/8/8/8/8/1k1K4 w - - 0 1"] 1. Bce5
[Result "58"] [FEN "4kr2/5p1K/3p1Q2/1p4P1/4P3/1PP5/7b/8 w - - 0 1"] 1. Kh6 {win}
[Result "59"] [FEN "6R1/8/2pB3k/2P4p/5p1q/5P2/4P1K1/8 w - - 0 1"] 1. Bf8 {win}
[Result "60"] [FEN "n2Bqk2/5p1p/Q4KP1/p7/8/8/8/8 w - - 0 1"] 1. Qc8 Kg8 2. Bc7 {win}
[Result "61"] [FEN "8/5p2/8/8/p7/rpK4p/1p3ppr/bQ1N1bqk w - - 0 1"] 1. Kb4 {or Kd4 win}
[Result "62"] [FEN "8/8/7p/3KNN1k/2p4p/8/3P2p1/8 w - - 0 1"] 1. Kc6
[Result "63"] [FEN "1R6/pPk1r3/2p5/K7/8/2B1b3/8/8 w - - 0 1"] 1. Ka6
[Result "64"] [FEN "8/p7/qkpN1p2/8/1B1P4/PP3K2/5P2/8 w - - 0 1"] 1. Ba5 {win}
[Result "65"] [FEN "2N5/p7/P7/8/1KPp1p1p/3p1Bpp/3P2rq/R5bk w - - 0 1"] 1. Nb6 {win}
[Result "66"] [FEN "5kN1/3p1q2/5P2/5PP1/2pK4/1p1R4/1P6/8 w - - 0 1"] 1. Rxb3
[Result "67"] [FEN "2b1rk2/5p2/p1P5/2p2P2/2p5/7B/P7/2KR4 w - - 0 1"] 1. f6
[Result "68"] [FEN "2r5/prkpR1p1/2p1ppK1/P1p1N1B1/P1P1P3/8/8/8 w - - 0 1"] 1. Bf4
[Result "69"] [FEN "rk1b4/p2p2p1/1P6/2R2P2/8/2K5/8/5B2 w - - 0 1"] 1. Rc8 {win}
[Result "70"] [FEN "3k4/4pp2/n2n4/5BN1/3N4/b7/4K3/8 w - - 0 1"] 1. Nxf7
[Result "71"] [FEN "4b3/8/1P6/3K4/6p1/5pP1/5P1B/7k w - - 0 1"] 1. b7 Bb5 2. b8R
[Result "72"] [FEN "8/5pKN/5Pp1/5kP1/8/Bb6/8/7q b - - 0 1"] 1... Qxh7+
[Result "73"] [FEN "8/p5p1/1pP3p1/p5p1/k3p3/4p3/K7/8 w - - 0 1"] 1. c7 {win}
[Result "74"] [FEN "q7/8/2p5/B2p2pp/5pp1/2N3k1/6P1/7K w - - 0 1"] 1. Ne4 Kh4 2. Ng3 fxg3 3. Bb6
[Result "75"] [FEN "q7/7R/k7/1p6/1p6/1P2B3/7K/8 w - - 0 1"] 1. Bd4 {win}
[Result "76"] [FEN "1q1r3k/3P1pp1/ppBR1n1p/4Q2P/P4P2/8/5PK1/8 w - - 0 1"] 1. Rxf6
[Result "77"] [FEN "1r3q1k/2N2P1p/6pQ/4p3/7p/n6P/3B4/7K w - - 0 1"] 1. Qf4 {win}
[Result "78"] [FEN "5nr1/2Pp2pk/3Pp1p1/4P1P1/6P1/5K2/8/7n w - - 0 1"] 1. c8N
[Result "79"] [FEN "2K3k1/1p6/R3p1p1/1rB1P1P1/8/8/1Pb5/8 w - - 0 1"] 1. Rc6
[Result "80"] [FEN "4q3/2r1r2p/3P3P/1p6/kP6/Pp6/1P6/KB2R3 w - - 0 1"] 1. Rxe7 Qxe7 {or 1... Rxe7 2. dxe7} 2. dxc7
[Result "81"] [FEN "3k4/8/7p/2p1p1pP/1pPpPpP1/1P1P1P2/N7/2K5 w - - 0 1"] {Na2->h4}
[Result "82"] [FEN "8/8/8/1k3p2/p1p1pPp1/PpPpP1Pp/1P1P3P/QNK2NRR w - - 0 1"] {win}
[Result "83"] [FEN "4b1k1/P4pPp/1R3P1P/2r5/8/1P6/1K6/8 w - - 0 1"] 1. a8B
[Result "84"] [FEN "4N2k/4PB1p/7P/B1p5/2P5/3q2Pp/1P3P1K/2r5 w - - 0 1"] 1. Bc3 Rxc3 2. Nc7
[Result "85"] [FEN "1k6/3p4/1B6/4Pp1p/1p5R/1p4p1/pP3n2/K6n w - - 0 1"] 1. Rxh1 Nxh1 2. e6 dxe6 3. Bc7
[Result "86"] [FEN "N3kb2/pq4p1/4B1P1/1p1P2B1/p7/3P4/2P5/2K5 w - - 0 1"] 1. Bf7 Kd7 2. Be6 Kd6 3. Bf4 Kc5 4. Be3 Kb4 5. Bd2 Ka3 6. Kb1
[Result "87"] [FEN "8/1B3b1p/7P/p2p4/P2pp1kp/Q7/1N1Pq2P/7K w - - 0 1"] 1. Qh3
[Result "88"] [FEN "1B2b2k/2N1qr2/4n2p/4p1PQ/1r2N3/1p6/7P/2KB4 w - - 0 1"] 1. Nd5 Rc4 2. Kb1 Rc1 3. Kb2 Rf2 4. Nf2 Rb1 5. Kb1 Qh7 6. g6 Bg6 7. Bc2 bxc2 8. Kc1 Bxh5 9. Be5 Ng7 10. Ne7
[Result "89"] [FEN "2k4N/Q1np4/2p2Bpp/1p1P4/pPP1p2P/P7/7q/1K6 w - - 0 1"] 1. Nf7 Qg3 2. Qxc7 {win}
[Result "90"] [FEN "8/4nk2/1p3p2/2rp2pp/1P1R1N1P/6P1/3KPP2/8 b - - 0 1"] {avoid 1... Rb5}
[Result "91"] [FEN "5BK1/5p1N/5Pp1/6Pk/8/1b6/8/7q b - - 0 1"] 1... Qa8 {next Qa8->g5}
[Result "92"] [FEN "2b5/1pr4p/3bp1pk/1p6/1PpN2PP/K1P1n3/P3N1R1/3R4 w - - 0 1"] 1. Nxb5 Nxd1 2. Nd6 b5 3. g5 Kh5 4. Nxc8 Rxc8 5. Nf4 Kxh4 6. Nxg6
[Result "93"] [FEN "8/1p1pNpbk/q2P4/p3p2K/PP2N3/4P1P1/3P4/8 w - - 0 1"] 1. b5 Qb6 2. Nc8
[Result "94"] [FEN "1rr5/6pk/7p/8/8/7P/1Pb1RRPK/8 b - - 0 1"] {avoid Rxb2}
[Result "95"] [FEN "6Q1/8/8/8/8/7k/ppp1p3/brrbK3 w - - 0 1"] 1. Qg1 {win}
[Result "96"] [FEN "1B1K1k2/4N2p/3pP1pP/6p1/p7/3N2b1/2r2p2/8 w - - 0 1"] 1. Nc6 {win}
[Result "97"] [FEN "8/4Pr1N/8/6PN/8/3K1ppp/4prkb/4Bbnn w - - 0 1"] 1. Nf8 {win}
[Result "98"] [FEN "8/b7/3p2b1/5p1n/5Pk1/4P1p1/B5P1/R4K2 w - - 0 1"] 1. Ke2
[Result "99"] [FEN "5K2/8/5B2/p7/8/p4p2/pn1PpPp1/kb2R3 w - - 0 1"] 1. Bh8 a4 2. Kg7 {win}
[Result "100"] [FEN "3rqQ2/3ppppp/7k/R7/8/8/1PPP2K1/8 w - - 0 1"] 1. Ra3[/pgn]

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

by YACPDB:

Mendheim Julius - 1
Blathy Otto - 3, 12, 13
Benko Pal - 16, 75
Hasek Josef - 22, 28
Gurvich Abram - 23
Kasparyan Genrikh - 24
Neghina Mihai - 27
Grasemann Herbert - 37
Rudolph William - 46
Troitzky Aleksei - 57
Reti Richard - 58
Matous Mario - 60
Behting Carl - 62
Klyatskin Mikhail - 66
Kubbel Karl - 69
Novomesky Daniel - 73
Lazard Frederic - 74
Marwitz Jan - 79
Lamford Paul - 82
Simkhovich Froim - 86

by other sources:

Solovyov Y. - 6
Babic M. - 10
Neghina Mihai - 11, 31, 35 (based on study), 84, 87, 89, 92
Simkhovich Froim - 20
van Breukelen Gijs - 36
Hoch Yehuda & Aloni Hillel - 55
Troitzky Aleksei - 59
Smyslov Vasily - 67
Bondarenko F. & Kuznetsov A. - 68
Surya Sekhar Ganguly - 81
Stavrietsky Aleksandr - 88
Kazantsev A. - 93
Ryabinin Nikolaj - 96
Neghina Mihai & Rusz Arpad- 97
Kamody Mario & Neghina Mihai - 98
Fekete Zoltan - 99 (part of study)

[Pi4Chess]

Thanks !

[Dann Corbit]

A day with a new sting is a beautiful sunrise, a fresh spring shower, and a double rainbow.

[Jim Logan]

I always look forward to new versions of Sting! Thank you.

[lech]

Sting 25 is an alpha-beta engine with my original idea for such projects: "The Black Hole".
How it works? I used "a gravity of VALUE ZERO" to help to get a proper move(s) in "zero" and fortress positions mainly.

[Pi4Chess]

Sting 25 is an alpha-beta engine with my original idea for such projects: "The Black Hole".
How it works? I used "a gravity of VALUE ZERO" to help to get a proper move(s) in "zero" and fortress positions mainly.

Thank you for this explanation. You could put this in the "How to use it.txt" as an introduction

So if i understand your project well : After say 1 or 2 moves with 0 evaluation score by Stockfish it could sometimes find a way out if it was shifting to your "Gravity of Value Zero" build ?

[lech]

Sting 25 is an alpha-beta engine with my original idea for such projects: "The Black Hole".
How it works? I used "a gravity of VALUE ZERO" to help to get a proper move(s) in "zero" and fortress positions mainly.

Thank you for this explanation. You could put this in the "How to use it.txt" as an introduction

So if i understand your project well : After say 1 or 2 moves with 0 evaluation score by Stockfish it could sometimes find a way out if it was shifting to your "Gravity of Value Zero" build ?

The value Zero is like "a black hole" in alpha-beta searching. Sometimes engines try to win a position but we can see, step by step, only the value zero. But sometimes engines return a too high value, and there is a draw fortrees only. My idea increases or decreases in a special way "a gravity" of this "black hole" and thus searching can try return the correct move and a better value. It happens automatically, wthout any parameters.

[Pi4Chess]

Sting 25 is an alpha-beta engine with my original idea for such projects: "The Black Hole".
How it works? I used "a gravity of VALUE ZERO" to help to get a proper move(s) in "zero" and fortress positions mainly.

Thank you for this explanation. You could put this in the "How to use it.txt" as an introduction

So if i understand your project well : After say 1 or 2 moves with 0 evaluation score by Stockfish it could sometimes find a way out if it was shifting to your "Gravity of Value Zero" build ?

The value Zero is like "a black hole" in alpha-beta searching. Sometimes engines try to win a position but we can see, step by step, only the value zero. But sometimes engines return a too high value, and there is a draw fortrees only. My idea increases or decreases in a special way "a gravity" of this "black hole" and thus searching can try return the correct move and a better value. It happens automatically, wthout any parameters.

My indirect question was : why this is not part of "normal" stockfish and automatically implemented in certain situations ?

[lech]

Indeed Stockfish 2.1.1 as the base engine for my project Sting is not too fortunate solution.
But, it gives me a mental comfort.
The main goal of my work is to prove that a chess (alpha-beta) engine is able, without some dirty tricks or external tools or selective code or artifical intelligence, to solve all positions from the above-mentioned "IQ" test.
I believe that it is possible to do (implement) it without any ELO loss too.
Moreover, it is very important to know and understand that many positions (long solutions) should be solving by playing (auto-playing) not searching.