MESON Chess Problem Database
Problem Display
PID: 158416 (1K5k/6Rp/5B1q/8/8/8/8/1Q6 w - - 0 1)
Andreev, Aleksandr Grigorevich
Bankovskaya gazeta, 1996
#2
4 + 3
| 15148 | Sadier Collection | 2016 |
SOLUTION
- SOUND
- Sets
- 1...Qc1
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qd2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qe3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qg5
- 2.Rxg5#
- 2.Qxh7#
- 1...Qh1
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh2+
- 2.Rg3#
- 1...Qh3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh4
- 2.Rg5#
- 1...Qh5
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qxf6
- 2.Qxh7#
- 1...Qg6
- 2.Rxg6#
- 1...Qc1
- Tries
- 1.Kb7?
- 1...Qh1+
- 2.Rg2#
- 1...Qxf6
- 2.Qxh7#
- 1...Qc1
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qd2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qe3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qf4
- 2.Qxh7#
- 1...Qg5
- 2.Rxg5#
- 2.Qxh7#
- 1...Qh2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh4
- 2.Rg5#
- 1...Qh5
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qg6
- 2.Rxg6#
- 1...Qxg7+!
- 1...Qh1+
- 1.Rc7+?
- 1...Qg7
- 2.Rc8#
- 1...Qxf6
- 2.Qxh7#
- 1...Kg8!
- 1...Qg7
- 1.Rd7+?
- 1...Qg7
- 2.Rd8#
- 1...Qxf6
- 2.Qxh7#
- 1...Kg8!
- 1...Qg7
- 1.Re7+?
- 1...Qg7
- 2.Re8#
- 1...Qxf6
- 2.Qxh7#
- 1...Kg8!
- 1...Qg7
- 1.Rf7+?
- 1...Qg7
- 2.Rf8#
- 1...Qxf6
- 2.Qxh7#
- 1...Kg8!
- 1...Qg7
- 1.Qc2?
- threat
- 2.Qc8#
- 1...Qh2+
- 2.Rg3#
- 1...Qxf6
- 2.Qxh7#
- 1...Qc1
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qd2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qe3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qh3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh5
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qg6
- 2.Rxg6#
- 1...Qf4+!
- threat
- 1.Qd3?
- threat
- 2.Qd8#
- 1...Qh2+
- 2.Rg3#
- 1...Qxf6
- 2.Qxh7#
- 1...Qd2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qe3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qh5
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qg6
- 2.Rxg6#
- 1...Qf4+!
- threat
- 1.Qe4?
- threat
- 2.Qe8#
- 1...Qh2+
- 2.Rg3#
- 1...Qxf6
- 2.Qxh7#
- 1...Qe3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qh5
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qg6
- 2.Rxg6#
- 1...Qf4+!
- threat
- 1.Qf5?
- threat
- 2.Qc8#
- 1...Qh2+
- 2.Rg3#
- 1...Qxf6
- 2.Qxh7#
- 1...Qc1
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qd2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qe3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qh3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh5
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qg6
- 2.Rxg6#
- 1...Qf4+!
- threat
- 1.Qg1?
- threat
- 2.Rg8#
- 1...Qh2+
- 2.Rg3#
- 2.Rc7#
- 1...Qxg7
- 2.Qxg7#
- 1...Qg5
- 2.Rxg5#
- 1...Qg6
- 2.Rxg6#
- 1...Qf4+!
- threat
- 1.Kb7?
- Keys
- 1.Ka8!
- threat
- 2.Qb8#
- 1...Qh1+
- 2.Rg2#
- 1...Qxf6
- 2.Qxh7#
- 1...Qc1
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qd2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qe3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 2.Qxh7#
- 1...Qf4
- 2.Qxh7#
- 1...Qh2
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh3
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qh5
- 2.Rg1#
- 2.Rg2#
- 2.Rg3#
- 2.Rg4#
- 2.Rg5#
- 2.Rg6#
- 1...Qg6
- 2.Rxg6#
- threat
- 1.Ka8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 2
- Sets
- Q(a);CHECK,N_GUARD::B(B)+R(C)
- Q(a);N_GUARD::B(B)+R(C)
- Q(a);N_GUARD,XB(B)::QAR1(A),XP(b)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
- Tries
- Try
- K(D);P-FLIGHT
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(C)
- Q(a);N_GUARD,XB(B)::QAR1(A),XP(b)
- Q(a);N_GUARD::QAR1(A),XP(b)
- Q(a);N_GUARD::B(B)+R(C)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
- Refutation
- Q(a);CHECK,P_SPINQ(a),XR(C)
- Try
- R(C);CHECK
- Vars
- Q(a);P_SPINQ(a)::R(C)
- Q(a);XB(B)::QAR1(A),XP(b)
- Refutation
- K(c);P-FLIGHT
- Try
- R(C);CHECK
- Vars
- Q(a);P_SPINQ(a)::R(C)
- Q(a);XB(B)::QAR1(A),XP(b)
- Refutation
- K(c);P-FLIGHT
- Try
- R(C);CHECK
- Vars
- Q(a);P_SPINQ(a)::R(C)
- Q(a);XB(B)::QAR1(A),XP(b)
- Refutation
- K(c);P-FLIGHT
- Try
- R(C);CHECK
- Vars
- Q(a);P_SPINQ(a)::R(C)
- Q(a);XB(B)::QAR1(A),XP(b)
- Refutation
- K(c);P-FLIGHT
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(C)
- Q(a);N_GUARD,XB(B)::QAR1(A),XP(b)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(C)
- Q(a);N_GUARD,XB(B)::QAR1(A),XP(b)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(C)
- Q(a);N_GUARD,XB(B)::QAR1(A),XP(b)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- Q(A);
- Threat
- QAR(A)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(C)
- Q(a);N_GUARD,XB(B)::QAR1(A),XP(b)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- Q(A);
- Threat
- B(B)+R(C),DCHECK
- Vars
- Q(a);OGATE,P_SPINQ(a),XR(C)::QAB1(A),XQ(a)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
- Refutation
- Q(a);CHECK
- Try
- Actual
- K(D);P-FLIGHT
- Threat
- QAR(A)
- Vars
- Q(a);CHECK,N_GUARD::B(B)+R(C)
- Q(a);N_GUARD,XB(B)::QAR1(A),XP(b)
- Q(a);N_GUARD::QAR1(A),XP(b)
- Q(a);N_GUARD::B(B)+R(C),XQ(a)
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).