Complex Puzzle

[peter]

From EG january 2017 supplement.

The mistake is 4...Rh2, 4...Rf2 instead holds the draw,

[Nordlandia]

Possible 8-Man Cook

If black can win the remaining pawn by force, then 7-Man Lomonosov can comfirm the verdict of the position.

Code: Select all

8/8/1r5k/8/7K/3RP3/2b1n3/1N6 w - - 0 0

[Nordlandia]

Jan Timman, White wins

[d]7k/6p1/pp2p3/b2p1ppB/1p4b1/NP4P1/6P1/4KR2 w - - 0 0

[Nordlandia]

Possible cook



[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "1BK5/P1P5/P2r1p2/b7/5p2/6k1/2b3P1/6R1 w - - 0 0"]
[PlyCount "14"]

1. a8=N Bf5+ 2. Kb7 Be4+ 3. Ka7 Bd2 4. c8=N Be3+ 5. Ncb6 Rd8 (5... Rd7+ 6. Nc7
Rd6 7. Nca8 Rd7+ 8. Nc7) 6. Rf1 Bxg2 7. Ra1 Kg4 {Possible cook} *

[/pgn]

Code: Select all

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "1BK5/P1P5/P2r1p2/b7/5p2/6k1/2b3P1/6R1 w - - 0 0"]
[PlyCount "14"]

1. a8=N Bf5+ 2. Kb7 Be4+ 3. Ka7 Bd2 4. c8=N Be3+ 5. Ncb6 Rd8 (5... Rd7+ 6. Nc7
Rd6 7. Nca8 Rd7+ 8. Nc7) 6. Rf1 Bxg2 7. Ra1 Kg4 {Possible cook} *

--------------------

[d]8/1B2p3/8/3N3N/1B6/3k4/pp3K2/8 w - - 0 0

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "8/1B2p3/8/3N3N/1B6/3k4/pp3K2/8 w - - 0 0"]
[PlyCount "15"]

{[#]} 1. Nhf4+ (1. Nhf4+ Kc4 2. Ba6+ {1.19/29 Stockfish 7 64}) 1... Kc4 (1...
Ke4) (1... Kc4 2. Ba6+ Kb3 {1.37/30 Stockfish 5 64 SSE4.2}) 2. Ba6+ (2. Ba6+
Kb3 3. Ne6 {1.49/35 Stockfish 8 64}) 2... Kb3 3. Ne6 b1=Q 4. Nd4+ Kb2 5. Bc3+
Ka3 6. Bc4 Qb8 7. Kf3 (7. Nc7 a1=N 8. Bxa1 {2.00/17 Houdini 3 Pro x64} Qf8+ 9.
Ke2 Qf4 10. Nd5 Qh2+ 11. Kd3 Qh7+ 12. Kd2 Qh2+ 13. Ne2) 7... Qb7 8. Ke2 *

[/pgn]

Code: Select all

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "8/1B2p3/8/3N3N/1B6/3k4/pp3K2/8 w - - 0 0"]
[PlyCount "15"]

{[#]} 1. Nhf4+ (1. Nhf4+ Kc4 2. Ba6+ {1.19/29 Stockfish 7 64}) 1... Kc4 (1...
Ke4) (1... Kc4 2. Ba6+ Kb3 {1.37/30 Stockfish 5 64 SSE4.2}) 2. Ba6+ (2. Ba6+
Kb3 3. Ne6 {1.49/35 Stockfish 8 64}) 2... Kb3 3. Ne6 b1=Q 4. Nd4+ Kb2 5. Bc3+
Ka3 6. Bc4 Qb8 7. Kf3 (7. Nc7 a1=N 8. Bxa1 {2.00/17 Houdini 3 Pro x64} Qf8+ 9.
Ke2 Qf4 10. Nd5 Qh2+ 11. Kd3 Qh7+ 12. Kd2 Qh2+ 13. Ne2) 7... Qb7 8. Ke2 *

[Nordlandia]

Possible cook

R. Becker

[d]8/2pR4/p7/3Pr3/8/K2P4/6k1/3b3N w - - 0 0

[Nordlandia]

Possible cook

[d]3R4/1pp5/8/P2P2K1/8/1r6/2b3k1/7N w - - 0 1

[Nordlandia]

White wins!

[d]5N1R/1r4p1/p4kP1/p5p1/p7/K3bP2/B5P1/8 b - - 0 0

-------------------

[d]3R1N2/2p1p2N/4p3/6p1/2P1P1qk/3PP3/P4K2/8 w - - 0 0

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "3R1N2/2p1p2N/4p3/6p1/2P1P1qk/3PP3/P4K2/8 w - - 0 0"]
[PlyCount "33"]

1. Ng6+ Kh5 2. Nf6+ exf6 3. Ne5 fxe5 4. Rh8+ Kg6 5. Rh1 Kf7 6. a4 Ke7 7. a5 Kd7
8. a6 Kc8 9. Rh8+ Kd7 10. a7 Qd1 11. Rh7+ Kd6 12. a8=Q Qd2+ 13. Kg3 Qe1+ 14.
Kg4 Qe2+ 15. Kxg5 Qxe3+ 16. Kg6 Qg3+ 17. Kf7 *

[/pgn]

[Nordlandia]

No 17357



[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "6k1/2p2p1p/4pP2/8/1pPB1P1P/7p/1KP1R3/7r w - - 0 0"]
[PlyCount "32"]

{[#]} 1. Be5 (1. Bf2 h2 2. Be1 {0.12/33 Stockfish 8 64} Rg1 3. Rxh2 Rxe1 4. c5)
1... h2 2. Rg2+ Kh8 3. Rxh2 Rxh2 4. f5 Re2 5. fxe6 Kg8 6. e7 Rxe5 7. h5 Re3 8.
c5 c6 9. Kc1 Re1+ 10. Kd2 Re4 11. Kd3 Re6 12. Kc4 Re4+ 13. Kb3 h6 14. Ka4 b3+
15. Kxb3 Kh7 16. c4 (16. Ka3 Re1 17. Ka4 Ra1+ 18. Kb4 Ra6 19. Kb3 Ra8 20. Kb2
Rb8+ 21. Kc3 Rg8 22. Kd4 Rg3 23. e8=B) 16... Kh8 *

[/pgn]

Code: Select all

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "6k1/2p2p1p/4pP2/8/1pPB1P1P/7p/1KP1R3/7r w - - 0 0"]
[PlyCount "32"]

{[#]} 1. Be5 (1. Bf2 h2 2. Be1 {0.12/33 Stockfish 8 64} Rg1 3. Rxh2 Rxe1 4. c5)
1... h2 2. Rg2+ Kh8 3. Rxh2 Rxh2 4. f5 Re2 5. fxe6 Kg8 6. e7 Rxe5 7. h5 Re3 8.
c5 c6 9. Kc1 Re1+ 10. Kd2 Re4 11. Kd3 Re6 12. Kc4 Re4+ 13. Kb3 h6 14. Ka4 b3+
15. Kxb3 Kh7 16. c4 (16. Ka3 Re1 17. Ka4 Ra1+ 18. Kb4 Ra6 19. Kb3 Ra8 20. Kb2
Rb8+ 21. Kc3 Rg8 22. Kd4 Rg3 23. e8=B) 16... Kh8 *

-----------------------

[d]7N/P5N1/P2Ppk1p/p6b/r4B1P/1pP1K2P/Pp1P4/8 b - - 0 0

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "7N/P5N1/P2Ppk1p/p6b/r4B1P/1pP1K2P/Pp1P4/8 b - - 0 0"]
[PlyCount "39"]

{[#]} 1... Re4+ (1... Re4+ 2. Kxe4 b1=Q+ {2.06/28 Stockfish 8 64}) 2. Kxe4
b1=Q+ 3. Kd4 Qg1+ 4. Be3 Qxg7 5. a8=Q b2 6. Qb8 b1=Q 7. Qxb1 Qa7+ 8. Kc4 Be2+
9. d3 Qxa6+ (9... Bxd3+) 10. Kc5 (10. Kc5 {1.83/28 Stockfish 7 64}) 10... Qc8+
11. Kb5 Qb8+ 12. Bb6 Qxd6 13. Kxa5 (13. Kxa5 {2.31/29 Stockfish 8 64}) 13...
Bxd3 14. Qb3 Kg7 15. c4 Kxh8 16. c5 Qd4 17. c6 Qe5+ 18. Kb4 Qe4+ 19. Ka3 Ba6
20. Qc3+ e5 *

[/pgn]

Code: Select all

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "7N/P5N1/P2Ppk1p/p6b/r4B1P/1pP1K2P/Pp1P4/8 b - - 0 0"]
[PlyCount "39"]

{[#]} 1... Re4+ (1... Re4+ 2. Kxe4 b1=Q+ {2.06/28 Stockfish 8 64}) 2. Kxe4
b1=Q+ 3. Kd4 Qg1+ 4. Be3 Qxg7 5. a8=Q b2 6. Qb8 b1=Q 7. Qxb1 Qa7+ 8. Kc4 Be2+
9. d3 Qxa6+ (9... Bxd3+) 10. Kc5 (10. Kc5 {1.83/28 Stockfish 7 64}) 10... Qc8+
11. Kb5 Qb8+ 12. Bb6 Qxd6 13. Kxa5 (13. Kxa5 {2.31/29 Stockfish 8 64}) 13...
Bxd3 14. Qb3 Kg7 15. c4 Kxh8 16. c5 Qd4 17. c6 Qe5+ 18. Kb4 Qe4+ 19. Ka3 Ba6
20. Qc3+ e5 *

[Nordlandia]

Possible cook

[d]8/5ppb/7k/7q/8/B3NpR1/5P1P/6K1 w - - 0 1

--------------------

Possible super-cook

[d]5B2/4R3/7K/1Q1b1pp1/8/3r4/2Nq1nP1/6k1 w - - 0 1

Intended solution:

Code: Select all

[Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "5B2/4R3/7K/1Q1b1pp1/8/3r4/2Nq1nP1/6k1 w - - 0 1"]
[PlyCount "21"]

1. Ne1 Rh3+ 2. gxh3 g4+ 3. Kh5 gxh3 4. Rg7+ Ng4 5. Rxg4+ fxg4 6. Bc5+ Kh2 7.
Qf1 Bg2 8. Nf3+ gxf3 9. Qg1+ Kg3 10. Qf2+ Qxf2 11. Bd6# *

[Nordlandia]

[pgn][Event "?"]
[Site "?"]
[Date "????.??.??"]
[Round "?"]
[White "New game"]
[Black "?"]
[Result "*"]
[SetUp "1"]
[FEN "nb6/PP6/2r4P/3b4/k7/8/4p1R1/5BBK w - - 0 0"]
[PlyCount "11"]

1. axb8=B Rxh6+ 2. Bbh2 exf1=B 3. Be3 Bfxg2+ 4. Kg1 Rf6 5. bxa8=Q+ Bxa8 6. Bhf4
*

[/pgn]