MESON Chess Problem Database
Problem Display
PID: 160081 (7k/5r1p/5P1Q/5B1K/8/8/8/8 w - - 0 1)
Andreev, Aleksandr Grigorevich
Bankovskaya gazeta, 1996
#2
4 + 3
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Rxf6
- Tries
- 1.Kg4?
- 1...Rg7+
- 2.Qxg7#
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rg7+
- 1.Kh4?
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rxf6
- 1.Kg5?
- 1...Rg7+
- 2.Qxg7#
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rg7+
- 1.Bb1?
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rxf6
- 1.Bc2?
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rxf6
- 1.Bd3?
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rxf6
- 1.Be4?
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rxf6
- 1.Bg6?
- 1...Rxf6
- 2.Qxh7#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 2.Qxh7#
- 1...Kg8!
- 1...Rxf6
- 1.Kg4?
- Keys
- 1.Be6!
- 1...Kg8
- 2.Qg7#
- 1...Rxf6
- 2.Qxf6#
- 1...Ra7
- 2.Qf8#
- 1...Rb7
- 2.Qf8#
- 1...Rc7
- 2.Qf8#
- 1...Rd7
- 2.Qf8#
- 1...Re7
- 2.Qf8#
- 1...Rg7
- 2.Qxg7#
- 2.fxg7#
- 1...Rf8
- 2.Qg7#
- 2.Qxf8#
- 1...Kg8
- 1.Be6!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- Tries
- Try
- K(B);S_FLIGHT
- Vars
- R(a);CHECK,N_GUARD::QAB1(D),XR(a)
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- K(B);P-FLIGHT
- Vars
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- K(B);P-FLIGHT
- Vars
- R(a);CHECK,N_GUARD::QAB1(D),XR(a)
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(A);
- Vars
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(A);
- Vars
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(A);
- Vars
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(A);
- Vars
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- B(A);
- Vars
- R(a);N_GUARD,XP(C)::QAR1(D),XP(b)
- R(a);N_GUARD::QAR2(D)
- R(a);N_GUARD::QAB1(D),XR(a)
- Refutation
- K(c);N_SPINP(b),P-FLIGHT
- Try
- Actual
- B(A);
- Vars
- K(c);N_SPINP(b),P-FLIGHT,P_SPINR(a)::QAR1(D)
- R(a);OGATE,XP(C)::QAB(D),XR(a)
- R(a);N_GUARD::QAR2(D)
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).