MESON Chess Problem Database
Problem Display
PID: 95113 (K7/Q3Np1B/2pBkn2/2P4p/7R/7b/5R2/8 w - - 0 1)
Shedey, Sergey Oleksandrovich
Pravda Vostoka, 1968
#2
8 + 6
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Bf1
- 2.Bf5#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Rxe4#
- 1...Sd5
- 2.Re4#
- 1...Sd7
- 2.Qa2#
- 1...Sxh7
- 2.Re4#
- 1...Se8
- 2.Re4#
- 1...Sg8
- 2.Re4#
- 1...Bf1
- Tries
- 1.Sg6?
- threat
- 2.Sf4#
- 1...Kd5
- 2.Qa2#
- 1...Sxh7
- 2.Qxf7#
- 1...Se4
- 2.Qxf7#
- 1...Sg4
- 2.Qxf7#
- 1...Sd5
- 2.Sf8#
- 2.Re4#
- 2.Qxf7#
- 1...Sd7
- 2.Qa2#
- 1...Se8
- 2.Qxf7#
- 1...Sg8
- 2.Qxf7#
- 1...fxg6!
- threat
- 1.Bb1?
- 1...Bf1
- 2.Bf5#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Ba2#
- 2.Rxe4#
- 1...Sg4
- 2.Ba2#
- 1...Sd5
- 2.Re4#
- 1...Sd7
- 2.Ba2#
- 2.Qa2#
- 1...Sh7
- 2.Ba2#
- 2.Re4#
- 1...Se8
- 2.Ba2#
- 2.Re4#
- 1...Sg8
- 2.Ba2#
- 2.Re4#
- 1...Bg4!
- 1...Bf1
- 1.Bc2?
- 1...Bf1
- 2.Bf5#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Bb3#
- 2.Rxe4#
- 1...Sg4
- 2.Bb3#
- 1...Sd5
- 2.Re4#
- 1...Sd7
- 2.Bb3#
- 2.Qa2#
- 1...Sh7
- 2.Bb3#
- 2.Re4#
- 1...Se8
- 2.Bb3#
- 2.Re4#
- 1...Sg8
- 2.Bb3#
- 2.Re4#
- 1...Bg4!
- 1...Bf1
- 1.Bd3?
- 1...Bf1
- 2.Bf5#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Bc4#
- 2.Rxe4#
- 1...Sg4
- 2.Bc4#
- 1...Sd5
- 2.Re4#
- 1...Sd7
- 2.Bc4#
- 2.Qa2#
- 1...Sh7
- 2.Bc4#
- 2.Re4#
- 1...Se8
- 2.Bc4#
- 2.Re4#
- 1...Sg8
- 2.Bc4#
- 2.Re4#
- 1...Bg4!
- 1...Bf1
- 1.Rf5?
- threat
- 2.Re5#
- 1...Bxf5
- 2.Bxf5#
- 1...Sxh7
- 2.Re4#
- 1...Se4
- 2.Rxe4#
- 1...Sd5
- 2.Re4#
- 1...Sd7
- 2.Qa2#
- 1...Se8
- 2.Re4#
- 1...Sg8
- 2.Re4#
- 1...Sg4!
- threat
- 1.Rhf4?
- threat
- 2.Rxf6#
- 1...Sxh7
- 2.Re2#
- 2.Re4#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Rxe4#
- 1...Sd5
- 2.Re4#
- 1...Sd7
- 2.Qa2#
- 1...Se8
- 2.Re2#
- 2.Re4#
- 1...Sg8
- 2.Re2#
- 2.Re4#
- 1...Sg4!
- threat
- 1.Qb8?
- 1...Kd7
- 2.Qc8#
- 1...Sxh7
- 2.Qc8#
- 1...Bf1
- 2.Bf5#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Qc8#
- 1...Sg4
- 2.Qc8#
- 1...Sd5
- 2.Qc8#
- 1...Sd7
- 2.Qb3#
- 1...Se8
- 2.Qc8#
- 1...Sg8
- 2.Qc8#
- 1...Bg4!
- 1...Kd7
- 1.Qa6?
- 1...Kd7
- 2.Qc8#
- 1...Sxh7
- 2.Qc8#
- 1...Bf1
- 2.Bf5#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Qc8#
- 1...Sg4
- 2.Qc8#
- 1...Sd5
- 2.Qc8#
- 1...Sd7
- 2.Qc4#
- 2.Qa2#
- 1...Se8
- 2.Qc8#
- 1...Sg8
- 2.Qc8#
- 1...Bg4!
- 1...Kd7
- 1.Qb7?
- 1...Sxh7
- 2.Re4#
- 2.Qc8#
- 1...Bf1
- 2.Bf5#
- 1...Bg2
- 2.Bf5#
- 1...Bf5
- 2.Bxf5#
- 1...Se4
- 2.Rxe4#
- 2.Qc8#
- 1...Sg4
- 2.Qc8#
- 1...Sd5
- 2.Re4#
- 2.Qc8#
- 1...Sd7
- 2.Qb3#
- 1...Se8
- 2.Re4#
- 2.Qc8#
- 1...Sg8
- 2.Re4#
- 2.Qc8#
- 1...Bg4!
- 1...Sxh7
- 1.Sg6?
- Keys
- 1.Sd5!
- threat
- 2.Sf4#
- 1...Kxd5
- 2.Qa2#
- 1...Sxd5
- 2.Re4#
- 2.Qxf7#
- 1...Sxh7
- 2.Qxf7#
- 1...cxd5
- 2.Qe7#
- 1...Se4
- 2.Qxf7#
- 1...Sg4
- 2.Qxf7#
- 1...Sd7
- 2.Sc7#
- 1...Se8
- 2.Qxf7#
- 1...Sg8
- 2.Qxf7#
- threat
- 1.Sd5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 5
- ADDED MATES = 3
- REMOVED MATES = 4
- Sets
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::R(B),XS(e)
- S(e);N_GUARD::R(B)
- S(e);N_GUARD,SBLOCK::QAB(E)
- S(e);N_GUARD,XB(G)::R(B)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- K(d);S_FLIGHT::QAB(E)
- S(e);XB(G)::QAB1(E),XP(f)
- S(e);::QAB1(E),XP(f)
- S(e);N_GUARD,SBLOCK::QAB(E)
- Refutation
- P(f);XS(F)
- Try
- B(G);
- Vars
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::R(B)
- Refutation
- B(a);
- Try
- B(G);
- Vars
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::R(B)
- Refutation
- B(a);
- Try
- B(G);
- Vars
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::B(G)
- S(e);N_GUARD::R(B)
- Refutation
- B(a);
- Try
- R(A);
- Threat
- R1(A)
- Vars
- B(a);OGATE,XR(A)::B(G),XB(a)
- S(e);N_GUARD,XB(G)::R(B)
- S(e);N_GUARD::R(B),XS(e)
- S(e);N_GUARD::R(B)
- S(e);N_GUARD,SBLOCK::QAB(E)
- Refutation
- S(e);
- Try
- R(B);
- Threat
- R1(B),XS(e)
- Vars
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::R(B),XS(e)
- S(e);N_GUARD::R(B)
- S(e);N_GUARD,SBLOCK::QAB(E)
- Refutation
- S(e);
- Try
- Q(E);
- Vars
- K(d);S_FLIGHT::QAB1(E)
- S(e);N_GUARD,XB(G)::QAB(E)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::QAB(E)
- S(e);N_GUARD,SBLOCK::QAB(E)
- Refutation
- B(a);
- Try
- Q(E);
- Vars
- K(d);S_FLIGHT::QAB1(E)
- S(e);N_GUARD,XB(G)::QAB(E)
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::QAB(E)
- Refutation
- B(a);
- Try
- Q(E);
- Vars
- B(a);N_GUARD::B(G)
- B(a);N_GUARD::B(G),XB(a)
- S(e);N_GUARD::QAB(E)
- S(e);N_GUARD,SBLOCK::QAB(E)
- Refutation
- B(a);
- Try
- Actual
- S(F);
- Threat
- S(F)
- Vars
- K(d);OGATEB,S_FLIGHT,XS(F)::QAB(E)
- S(e);XB(G)::QAB1(E),XP(f)
- P(c);SBLOCK,XS(F)::QAR1(E)
- S(e);::QAB1(E),XP(f)
- S(e);SBLOCK::S(F)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).