MESON Chess Problem Database
Problem Display
PID: 172305 (8/6Q1/8/2P5/4nk1N/8/7K/4R3 w - - 0 1)
Andreev, Aleksandr Grigorevich
Vecherni Krasnodar, 1996
#2
5 + 2
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Sd2
- 2.Qg3#
- 1...Sf2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sxc5
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sf6
- 2.Qg3#
- 1...Sd2
- Tries
- 1.Kg2?
- 1...Sxc5
- 2.Qg3#
- 1...Sd2
- 2.Qg3#
- 1...Sf2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd6
- 2.Qg3#
- 1...Sf6
- 2.Qg3#
- 1...Sg5!
- 1...Sxc5
- 1.Re2?
- 1...Sxc5
- 2.Qg3#
- 1...Sd2
- 2.Qg3#
- 1...Sf2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd6
- 2.Qg3#
- 1...Sf6
- 2.Qg3#
- 1...Sg5!
- 1...Sxc5
- 1.Qe5+?
- 1...Kg4
- 2.Rxe4#
- 1...Kxe5!
- 1...Kg4
- 1.Qh6+?
- 1...Kg4
- 2.Rxe4#
- 1...Ke5
- 2.Qd6#
- 1...Sg5!
- 1...Kg4
- 1.Qg1?
- 1...Sxc5
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd2
- 2.Qg3#
- 1...Sf2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg5
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sf6
- 2.Qg3#
- 1...Ke5!
- 1...Sxc5
- 1.Qg2?
- threat
- 2.Rxe4#
- 1...Sxc5
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sd2
- 2.Qg3#
- 1...Sf2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg5
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sf6
- 2.Qg3#
- 1...Ke5!
- threat
- 1.c6?
- 1...Sd2
- 2.Qg3#
- 1...Sf2
- 2.Qg3#
- 1...Sc3
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sc5
- 2.Qg3#
- 1...Sd6
- 2.Qg3#
- 1...Sf6
- 2.Qg3#
- 1...Sg5!
- 1...Sd2
- 1.Kg2?
- Keys
- 1.Qg6!
- threat
- 2.Rxe4#
- 2.Qf5#
- 1...Ke5
- 2.Qd6#
- 1...Sxc5
- 2.Qf5#
- 2.Qg3#
- 1...Sd2
- 2.Qf5#
- 2.Qg3#
- 1...Sf2
- 2.Qf5#
- 2.Qg3#
- 1...Sc3
- 2.Qf5#
- 2.Qg3#
- 1...Sg3
- 2.Qxg3#
- 1...Sg5
- 2.Qf5#
- 1...Sd6
- 2.Qg3#
- 1...Sf6
- 2.Qf5#
- 2.Qg3#
- threat
- 1.Qg6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- S(a);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD,XP(D)::QAB1(E)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- S(a);N_GUARD,XP(D)::QAB1(E)
- S(a);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- Refutation
- S(a);
- Try
- R(A);
- Vars
- S(a);N_GUARD,XP(D)::QAB1(E)
- S(a);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- Refutation
- S(a);
- Try
- Q(E);CHECK
- Vars
- K(b);P-FLIGHT::R(A),XS(a)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT,XQ(E)
- Try
- Q(E);CHECK
- Vars
- K(b);P-FLIGHT::R(A),XS(a)
- K(b);P_SPINS(a),S_FLIGHT::QAB1(E)
- Refutation
- S(a);P_SPINS(a)
- Try
- Q(E);
- Vars
- S(a);N_GUARD,XP(D)::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAB1(E)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- Q(E);
- Threat
- R1(A),XS(a)
- Vars
- S(a);N_GUARD,XP(D)::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(a);N_GUARD::QAB1(E)
- Refutation
- K(b);P_SPINS(a),S_FLIGHT
- Try
- P(D);
- Vars
- S(a);N_GUARD::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- Refutation
- S(a);
- Try
- Actual
- Q(E);
- Threat
- DUALS(2)
- Vars
- K(b);P_SPINS(a),S_FLIGHT::QAB1(E)
- S(a);N_GUARD::QAB1(E),XS(a)
- S(a);::QAR1(E)
- S(a);N_GUARD::QAB1(E)
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).