Reference from Arves:fishpov wrote: ↑Wed Feb 06, 2019 12:55 am [d]8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - - 0 1
Hi Marek, it seems like with Sting 13 this very difficult problem is solved.
This is great !
I have just a crash engine after 10 hours but I used 8Go Hash.
Analysis by Sting 13 based on Stockfish 2.1.1 64bit:
.....
1.b4xa5 Rd3-e3+ 2.Ke5-d6 Re3-d3+ 3.Kd6-e5
= (0.00) Depth: 35 00:06:22 3309MN
{snip}
1.b4-b5 Rd3-e3+ 2.Ke5-d6 Re3-d3+ 3.Kd6-c7 Rd3-e3 4.Kc7-d7 Re3-d3+ 5.Kd7-e8 g5-g4 6.e6-e7 Rd3-e3 7.Rg2-g1 g3-g2 8.Rg1xg2 g4-g3 9.Rg2-g1 Re3-d3 10.Ke8-f7 Rd3-f3+ 11.Kf7-g7
+/- (1.29) Depth: 43 06:25:20 201624MN
1.b4-b5
+/- (1.41 ++) Depth: 44 06:55:47 217861MN
(, 05.02.2019)
[Event "sp.p MSV-2014"]
[Site "?"]
[Date "2014"]
[Round ""]
[White "Becker, Richard"]
[Black "?"]
[Result "1-0"]
[SetUp "1"]
[FEN "8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - - 0 1"]
[PlyCount "69"]
[EventDate "2014"]
1. b5 $1 (1. bxa5 $2 {unblocks the a5 square. See variation 11...Kb4.1...} Re3+ 2. Kd6 Rd3+ 3. Kc6 Re3 4. Kd7 Rd3+ 5. Ke8 Re3 6. e7 a6 7. Rg1 Kb4 8. Rd1 Kc3 9. Kd7 Kc2 {=}) 1... Re3+ (1... Kc5 2. e7 Re3+ 3. Kf6 Kd6 (3... Rf3+ 4. Ke6 Re3+ 5. Kd7 Rd3+ 6. Ke8 Rf3 7. Rc2+ Kb4 8. Re2 Rf2 9. Re4+ Kc3 10. Kd7 {+-}) 4. Rd2+ Kc7 5. Rd3 $1 Rxd3 (5... Re2 6. Rxg3 Rf2+ 7. Ke6 Re2+ 8. Kf7 Rf2+ 9. Ke8 Rxa2 10. Rc3+ Kb7 11. Re3 Rf2 12. Kd7 a2 13. Re1 Rd2+ 14. Ke6 a1=Q 15. Rxa1 Re2+ 16. Kd7 Rd2+ 17. Ke8 {+-}) 6. e8=Q Rd6+ 7. Ke5 g2 (7... Rd2 8. Qf7+ Kb6 9. Qf3 Kxb5 10. Qxg3 {+-}) 8. Qf7+ Rd7 9. Qf2 Rd2 10. Qxa7+ Kd8 11. Qg1 {+-}) 2. Kd6 $1 (2. Kf6 $2 Rf3+ 3. Kg7 Re3 4. Kf7 (4. Kxh6 Rxe6+ 5. Kxh7 Rf6 6. h6 Rf2 7. Rxg3 Rxa2 {=}) 4... Rf3+ 5. Ke8 Rf2 6. Rxg3 Rxa2 {=}) 2... Rd3+ 3. Kc6 {(Kc7)} (3. Ke7 $2 Rf3 4. Kd7 Rf2 5. e7 Rxg2 6. e8=Q Rd2+ {=}) 3... Re3 4. Kd7 Rd3+ 5. Ke8 Re3 ( 5... Rf3 6. e7 Rf2 7. Rxg3 Rxa2 (7... Re2 8. Rxa3 {+-}) 8. Rg4+ Kb3 9. Re4 Rc2 (9... Rf2 10. Kd8 Rd2+ 11. Kc7 a2 12. e8=Q Rc2+ 13. Kb8 a1=Q 14. b6 $1 {+-}) 10. b6 $1 axb6 11. Kd8 Rd2+ 12. Kc7 a2 13. e8=Q a1=Q 14. Qf7+ Kc2 15. Rc4+ Qc3 (15... Kb2 16. Qf6+ Kb3 17. Qxa1 Kxc4 18. Qxa4+ {+-}) (15... Kb3 16. Rc1+ Kb2 17. Qf6+ Kxc1 18. Qxa1+ Kc2 19. Qxa4+ {+-}) 16. Qxh7+ Rd3 17. Rxc3+ Kxc3 18. Qxh6 {+-}) 6. e7 Rf3 7. Kd7 $1 {The first maneuver to lose a tempo.} (7. Re2 $2 {(Rc2+?)} Kd3 8. Rg2 Kc4 {Loss of time.}) 7... Rd3+ 8. Ke6 Re3+ 9. Kf7 Rf3+ 10. Ke8 {Repeating the position, but with BTM. 10...} Re3 (10... Kb4 11. Re2 Rf2 12. Re4+ Kc3 13. Kd7 g2 14. Re3+ Kb2 15. Re1 g1=Q 16. Rxg1 Rd2+ 17. Kc6 Re2 18. Rg2 $1 Rxg2 19. e8=Q Kxa2 20. Kb7 Kb1 21. Qf8 Rb2 22. Qf1+ Kc2 (22... Ka2 23. Kxa7 Rb3 24. b6 {+-}) 23. Qc4+ Kd2 24. Kxa7 {-+}) 11. Rg1 g4 (11... Rd3 12. Re1 g2 13. Kf7 g1=Q 14. Rxg1 Rf3+ 15. Ke6 Re3+ 16. Kd7 Rd3+ 17. Kc6 {+-}) (11... Re2 12. Rxg3 Kb4 (12... Rxa2 13. Rg4+ {etc.}) 13. Rd3 Rxa2 (13... Kc4 14. Rxa3 {+-}) 14. Rd4+ Kb3 15. Re4 {etc.}) (11... Kb4 12. Kd7 Rd3+ 13. Ke6 Re3+ 14. Kd6 Rd3+ (14... Re2 15. Rxg3 {+-}) 15. Ke5 Re3+ 16. Kd4 Rxe7 17. Rb1# {mate! The point of 1.b5! instead of 1.bxa5?}) 12. Rg2 {The beginning of the second maneuver.} (12. Rc1+ $2 Kd3 {=}) 12... Rf3 (12... Kb4 13. Rc2 Re1 (13... g2 14. Rxg2 g3 15. Rc2 {+-}) 14. Rd2 Kc4 15. Kd7 Kc3 16. Rg2 Rd1+ 17. Kc6 Re1 18. Rxg3+ Kb2 19. Rg2+ Ka1 20. Rg1 $1 Rxg1 21. e8=Q Rb1 (21... g3 22. Kb7 Rb1 23. Qe5+ {transposes}) 22. Kb7 g3 23. Qe5+ Kxa2 24. Kxa7 Rb3 (24... g2 25. Qd5+ Ka1 26. Qxg2 Rxb5 27. Ka6 {+-}) 25. b6 Kb1 26. Qe4+ Kb2 27. Qd4+ Kb1 28. Qxa4 Kb2 29. Qxb3+ Kxb3 30. b7 {+-}) 13. Kd7 $1 (13. Re2 $2 Kd3 14. Re1 Kd2 15. Re4 Kd1 {=}) 13... Rd3+ 14. Ke6 Re3+ 15. Kf7 Rf3+ 16. Ke8 Re3 (16... Rc3 17. Rd2 Rd3 18. Re2 {+-}) 17. Rg1 {Again, repeating the position with BTM. 17...} g2 (17... Re2 18. Rxg3 Rxa2 19. Rxg4+ {+-}) (17... Kb4 18. Kd7 Rd3+ 19. Ke6 Re3+ 20. Kd6 {+-}) 18. Rxg2 g3 19. Rg1 Rd3 20. Kf7 $1 {The third maneuver, but this time the wK's rundlauf goes clockwise.} (20. Re1 $2 g2 21. Kf7 Rf3+ {=}) (20. Rc1+ $2 Kb4 21. Kf7 (21. Rc2 Re3 22. Rd2 Kc3 23. Rg2 Kc4 {Loss of time.}) 21... Rf3+ 22. Ke6 Re3+ 23. Kd6 Re2 24. Rd1 Kc3 25. Rg1 Kb2 26. Rxg3 Kxa2 {=}) 20... Rf3+ 21. Ke6 Re3+ 22. Kd7 Rd3+ 23. Ke8 {The third position is repeated with BTM. 23. ..} Re3 24. Rc1+ $1 (24. Rg2 $2 Rf3 $1 25. Kd7 (25. Re2 Kd3 26. Re1 Kd2 27. Re4 Kd1 {=}) (25. Rc2+ Kd3 26. Kd7 Kxc2 27. e8=Q Kd2 $1 {=}) 25... Rd3+ 26. Ke6 Re3+ 27. Kf7 Rf3+ 28. Ke8 Re3 {Loss of time.}) 24... Kd3 (24... Kb4 25. Rc2 ( 25. Kd7 $2 Rd3+ 26. Ke6 Re3+ 27. Kd6 Re2 28. Rd1 Kc3 29. Rg1 Kb2 {=}) 25... Re1 26. Rd2 Kc4 27. Kd7 Kc3 28. Rg2 {+-}) 25. Kd7 Kd2 26. Rf1 $1 (26. Rc8 $2 Rd3+ 27. Ke6 Re3+ 28. Kf7 Rf3+ 29. Kg7 g2 30. e8=Q g1=Q+ {=}) 26... Rd3+ 27. Ke6 Re3+ (27... Ke2 28. Rf8 g2 29. Rg8 Re3+ 30. Kd7 {+-}) 28. Kf7 Kc2 (28... Ke2 29. Rf4 g2 30. Rg4 {+-}) 29. e8=Q Rxe8 30. Kxe8 Kb2 31. Rf7 Kxa2 32. Rxa7 Kb2 33. b6 a2 34. b7 a1=Q 35. b8=Q+ {wins} 1-0
EPD version, in case anyone wants to experiment with forwards and backwards analysis:
Code: Select all
8/p6p/4P2p/p3K1pP/pPk5/p2r2p1/P5R1/8 w - - fmvn 1; hmvc 0; pm b5;
8/p6p/4P2p/pP2K1pP/p1k5/p2r2p1/P5R1/8 b - - fmvn 1; hmvc 0; pm Re3+;
8/p6p/4P2p/pP2K1pP/p1k5/p3r1p1/P5R1/8 w - - fmvn 2; hmvc 1; pm Kd6;
8/p6p/3KP2p/pP4pP/p1k5/p3r1p1/P5R1/8 b - - fmvn 2; hmvc 2; pm Rd3+;
8/p6p/3KP2p/pP4pP/p1k5/p2r2p1/P5R1/8 w - - fmvn 3; hmvc 3; pm Kc6;
8/p6p/2K1P2p/pP4pP/p1k5/p2r2p1/P5R1/8 b - - fmvn 3; hmvc 4; pm Re3;
8/p6p/2K1P2p/pP4pP/p1k5/p3r1p1/P5R1/8 w - - fmvn 4; hmvc 5; pm Kd7;
8/p2K3p/4P2p/pP4pP/p1k5/p3r1p1/P5R1/8 b - - fmvn 4; hmvc 6; pm Rd3+;
8/p2K3p/4P2p/pP4pP/p1k5/p2r2p1/P5R1/8 w - - fmvn 5; hmvc 7; pm Ke8;
4K3/p6p/4P2p/pP4pP/p1k5/p2r2p1/P5R1/8 b - - fmvn 5; hmvc 8; pm Re3;
4K3/p6p/4P2p/pP4pP/p1k5/p3r1p1/P5R1/8 w - - fmvn 6; hmvc 9; pm e7;
4K3/p3P2p/7p/pP4pP/p1k5/p3r1p1/P5R1/8 b - - fmvn 6; hmvc 0; pm Rf3;
4K3/p3P2p/7p/pP4pP/p1k5/p4rp1/P5R1/8 w - - fmvn 7; hmvc 1; pm Kd7;
8/p2KP2p/7p/pP4pP/p1k5/p4rp1/P5R1/8 b - - fmvn 7; hmvc 2; pm Rd3+;
8/p2KP2p/7p/pP4pP/p1k5/p2r2p1/P5R1/8 w - - fmvn 8; hmvc 3; pm Ke6;
8/p3P2p/4K2p/pP4pP/p1k5/p2r2p1/P5R1/8 b - - fmvn 8; hmvc 4; pm Re3+;
8/p3P2p/4K2p/pP4pP/p1k5/p3r1p1/P5R1/8 w - - fmvn 9; hmvc 5; pm Kf7;
8/p3PK1p/7p/pP4pP/p1k5/p3r1p1/P5R1/8 b - - fmvn 9; hmvc 6; pm Rf3+;
8/p3PK1p/7p/pP4pP/p1k5/p4rp1/P5R1/8 w - - fmvn 10; hmvc 7; pm Ke8;
4K3/p3P2p/7p/pP4pP/p1k5/p4rp1/P5R1/8 b - - fmvn 10; hmvc 8; pm Re3;
4K3/p3P2p/7p/pP4pP/p1k5/p3r1p1/P5R1/8 w - - fmvn 11; hmvc 9; pm Rg1;
4K3/p3P2p/7p/pP4pP/p1k5/p3r1p1/P7/6R1 b - - fmvn 11; hmvc 10; pm g4;
4K3/p3P2p/7p/pP5P/p1k3p1/p3r1p1/P7/6R1 w - - fmvn 12; hmvc 0; pm Rg2;
4K3/p3P2p/7p/pP5P/p1k3p1/p3r1p1/P5R1/8 b - - fmvn 12; hmvc 1; pm Rf3;
4K3/p3P2p/7p/pP5P/p1k3p1/p4rp1/P5R1/8 w - - fmvn 13; hmvc 2; pm Kd7;
8/p2KP2p/7p/pP5P/p1k3p1/p4rp1/P5R1/8 b - - fmvn 13; hmvc 3; pm Rd3+;
8/p2KP2p/7p/pP5P/p1k3p1/p2r2p1/P5R1/8 w - - fmvn 14; hmvc 4; pm Ke6;
8/p3P2p/4K2p/pP5P/p1k3p1/p2r2p1/P5R1/8 b - - fmvn 14; hmvc 5; pm Re3+;
8/p3P2p/4K2p/pP5P/p1k3p1/p3r1p1/P5R1/8 w - - fmvn 15; hmvc 6; pm Kf7;
8/p3PK1p/7p/pP5P/p1k3p1/p3r1p1/P5R1/8 b - - fmvn 15; hmvc 7; pm Rf3+;
8/p3PK1p/7p/pP5P/p1k3p1/p4rp1/P5R1/8 w - - fmvn 16; hmvc 8; pm Ke8;
4K3/p3P2p/7p/pP5P/p1k3p1/p4rp1/P5R1/8 b - - fmvn 16; hmvc 9; pm Re3;
4K3/p3P2p/7p/pP5P/p1k3p1/p3r1p1/P5R1/8 w - - fmvn 17; hmvc 10; pm Rg1;
4K3/p3P2p/7p/pP5P/p1k3p1/p3r1p1/P7/6R1 b - - fmvn 17; hmvc 11; pm g2;
4K3/p3P2p/7p/pP5P/p1k3p1/p3r3/P5p1/6R1 w - - fmvn 18; hmvc 0; pm Rxg2;
4K3/p3P2p/7p/pP5P/p1k3p1/p3r3/P5R1/8 b - - fmvn 18; hmvc 0; pm g3;
4K3/p3P2p/7p/pP5P/p1k5/p3r1p1/P5R1/8 w - - fmvn 19; hmvc 0; pm Rg1;
4K3/p3P2p/7p/pP5P/p1k5/p3r1p1/P7/6R1 b - - fmvn 19; hmvc 1; pm Rd3;
4K3/p3P2p/7p/pP5P/p1k5/p2r2p1/P7/6R1 w - - fmvn 20; hmvc 2; pm Kf7;
8/p3PK1p/7p/pP5P/p1k5/p2r2p1/P7/6R1 b - - fmvn 20; hmvc 3; pm Rf3+;
8/p3PK1p/7p/pP5P/p1k5/p4rp1/P7/6R1 w - - fmvn 21; hmvc 4; pm Ke6;
8/p3P2p/4K2p/pP5P/p1k5/p4rp1/P7/6R1 b - - fmvn 21; hmvc 5; pm Re3+;
8/p3P2p/4K2p/pP5P/p1k5/p3r1p1/P7/6R1 w - - fmvn 22; hmvc 6; pm Kd7;
8/p2KP2p/7p/pP5P/p1k5/p3r1p1/P7/6R1 b - - fmvn 22; hmvc 7; pm Rd3+;
8/p2KP2p/7p/pP5P/p1k5/p2r2p1/P7/6R1 w - - fmvn 23; hmvc 8; pm Ke8;
4K3/p3P2p/7p/pP5P/p1k5/p2r2p1/P7/6R1 b - - fmvn 23; hmvc 9; pm Re3;
4K3/p3P2p/7p/pP5P/p1k5/p3r1p1/P7/6R1 w - - fmvn 24; hmvc 10; pm Rc1+;
4K3/p3P2p/7p/pP5P/p1k5/p3r1p1/P7/2R5 b - - fmvn 24; hmvc 11; pm Kd3;
4K3/p3P2p/7p/pP5P/p7/p2kr1p1/P7/2R5 w - - fmvn 25; hmvc 12; pm Kd7;
8/p2KP2p/7p/pP5P/p7/p2kr1p1/P7/2R5 b - - fmvn 25; hmvc 13; pm Kd2;
8/p2KP2p/7p/pP5P/p7/p3r1p1/P2k4/2R5 w - - fmvn 26; hmvc 14; pm Rf1;
8/p2KP2p/7p/pP5P/p7/p3r1p1/P2k4/5R2 b - - fmvn 26; hmvc 15; pm Rd3+;
8/p2KP2p/7p/pP5P/p7/p2r2p1/P2k4/5R2 w - - fmvn 27; hmvc 16; pm Ke6;
8/p3P2p/4K2p/pP5P/p7/p2r2p1/P2k4/5R2 b - - fmvn 27; hmvc 17; pm Re3+;
8/p3P2p/4K2p/pP5P/p7/p3r1p1/P2k4/5R2 w - - fmvn 28; hmvc 18; pm Kf7;
8/p3PK1p/7p/pP5P/p7/p3r1p1/P2k4/5R2 b - - fmvn 28; hmvc 19; pm Kc2;
8/p3PK1p/7p/pP5P/p7/p3r1p1/P1k5/5R2 w - - fmvn 29; hmvc 20; pm e8=Q;
4Q3/p4K1p/7p/pP5P/p7/p3r1p1/P1k5/5R2 b - - fmvn 29; hmvc 0; pm Rxe8;
4r3/p4K1p/7p/pP5P/p7/p5p1/P1k5/5R2 w - - fmvn 30; hmvc 0; pm Kxe8;
4K3/p6p/7p/pP5P/p7/p5p1/P1k5/5R2 b - - fmvn 30; hmvc 0; pm Kb2;
4K3/p6p/7p/pP5P/p7/p5p1/Pk6/5R2 w - - fmvn 31; hmvc 1; pm Rf7;
4K3/p4R1p/7p/pP5P/p7/p5p1/Pk6/8 b - - fmvn 31; hmvc 2; pm Kxa2;
4K3/p4R1p/7p/pP5P/p7/p5p1/k7/8 w - - fmvn 32; hmvc 0; pm Rxa7;
4K3/R6p/7p/pP5P/p7/p5p1/k7/8 b - - fmvn 32; hmvc 0; pm Kb2;
4K3/R6p/7p/pP5P/p7/p5p1/1k6/8 w - - fmvn 33; hmvc 1; pm b6;
4K3/R6p/1P5p/p6P/p7/p5p1/1k6/8 b - - fmvn 33; hmvc 0; pm a2;
4K3/R6p/1P5p/p6P/p7/6p1/pk6/8 w - - fmvn 34; hmvc 0; pm b7;
4K3/RP5p/7p/p6P/p7/6p1/pk6/8 b - - fmvn 34; hmvc 0; pm a1=Q;
4K3/RP5p/7p/p6P/p7/6p1/1k6/q7 w - - fmvn 35; hmvc 0; pm b8=Q+;
1Q2K3/R6p/7p/p6P/p7/6p1/1k6/q7 b - - fmvn 35; hmvc 0;