MESON Chess Problem Database
Problem Display
PID: 243967 (3R4/8/p7/q7/p2N4/3N4/1B3R1Q/3k1K2 w - - 0 1)
Gvozdjak, Peter
Hlas l'udu, 1988
#2
7 + 4
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qd2
- 2.Rxd2#
- 1...Qc3
- 2.Qh5#
- 1...Qb4
- 2.Qh5#
- 1...Qb6
- 2.Rd2#
- 2.Qh5#
- 1...Qc7
- 2.Rd2#
- 2.Qh5#
- 1...Qxd8
- 2.Rd2#
- 2.Qh5#
- 1...Qb5
- 2.Rd2#
- 1...Qc5
- 2.Rd2#
- 1...Qd5
- 2.Rd2#
- 1...Qe5
- 2.Rd2#
- 1...Qh5
- 2.Rd2#
- 2.Qxh5#
- 1...Qd2
- Tries
- 1.Sb4?
- threat
- 2.Rd2#
- 1...Qb5+
- 2.Sxb5#
- 1...Qxb4
- 2.Qh5#
- 1...Qf5
- 2.Sxf5#
- 1...Qg5!
- threat
- 1.Sc2?
- threat
- 2.Se3#
- 1...Qe1+
- 2.Sdxe1#
- 1...Qd2
- 2.Rxd2#
- 1...Qb6
- 2.Rd2#
- 2.Qh5#
- 1...Qc5
- 2.Sxc5#
- 2.Rd2#
- 1...Qe5
- 2.Sxe5#
- 2.Rd2#
- 1...Qg5!
- threat
- 1.Sf5?
- threat
- 2.Se3#
- 2.Qh5#
- 1...Qe1+
- 2.Sxe1#
- 1...Qd2
- 2.Rxd2#
- 1...Qb4
- 2.Sxb4#
- 2.Se3#
- 1...Qb6
- 2.Rd2#
- 2.Qh5#
- 1...Qc5
- 2.Sxc5#
- 2.Rd2#
- 2.Qh5#
- 1...Qd5
- 2.Se3#
- 2.Rd2#
- 1...Qe5
- 2.Sxe5#
- 2.Rd2#
- 1...Qxf5!
- threat
- 1.Re2?
- threat
- 2.Sf2#
- 1...Qe1+
- 2.Rxe1#
- 1...Qf5+!
- threat
- 1.Rd5?
- threat
- 2.Qh5#
- 1...Qxd5
- 2.Rd2#
- 1...Qd2
- 2.Rxd2#
- 1...Qe1+!
- threat
- 1.Re8?
- 1...Qe1+
- 2.Rxe1#
- 1...Qf5
- 2.Re1#
- 1...Qd2
- 2.Rxd2#
- 1...Qc3
- 2.Qh5#
- 1...Qb4
- 2.Qh5#
- 1...Qb6
- 2.Rd2#
- 2.Re1#
- 2.Qh5#
- 1...Qc7
- 2.Rd2#
- 2.Re1#
- 2.Qh5#
- 1...Qd8
- 2.Rd2#
- 2.Re1#
- 2.Qh5#
- 1...Qb5
- 2.Rd2#
- 2.Re1#
- 1...Qc5
- 2.Rd2#
- 2.Re1#
- 1...Qd5
- 2.Rd2#
- 2.Re1#
- 1...Qe5
- 2.Rd2#
- 1...Qg5
- 2.Re1#
- 1...Qh5
- 2.Rd2#
- 2.Re1#
- 2.Qxh5#
- 1...a3!
- 1...Qe1+
- 1.Qf4?
- threat
- 2.Qc1#
- 2.Qf3#
- 2.Qg4#
- 1...Qf5
- 2.Rd2#
- 2.Qc1#
- 2.Qd2#
- 1...Qd2
- 2.Rxd2#
- 2.Qxd2#
- 1...Qc3
- 2.Qf3#
- 2.Qg4#
- 1...Qc7
- 2.Rd2#
- 2.Qd2#
- 2.Qf3#
- 2.Qg4#
- 1...Qc5
- 2.Rd2#
- 2.Qd2#
- 2.Qf3#
- 2.Qg4#
- 1...Qd5
- 2.Rd2#
- 2.Qc1#
- 2.Qd2#
- 1...Qe5
- 2.Rd2#
- 2.Qc1#
- 2.Qd2#
- 1...Qg5
- 2.Rd2#
- 2.Qf3#
- 1...Qh5
- 2.Rd2#
- 2.Qc1#
- 2.Qd2#
- 1...Qe1+!
- threat
- 1.Sb4?
- Keys
- 1.Sb5!
- threat
- 2.Qh5#
- 1...Qe1+
- 2.Sxe1#
- 1...Qxb5
- 2.Rd2#
- 1...Qd2
- 2.Rxd2#
- 1...Qb4
- 2.Sxb4#
- threat
- 1.Sb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 1
- REMOVED MATES = 4
- Sets
- Q(c);N_GUARD::R1(C),XQ(c)
- Q(c);N_GUARD::QAB(D)
- Q(c);N_GUARD,P_PINS(E)::R1(C)
- Q(c);N_GUARD::R1(C)
- Tries
- Try
- S(E);
- Threat
- R1(C)
- Vars
- Q(c);CHECK,N_GUARD::R(G)+S(F),XQ(c)
- Q(c);N_GUARD,XS(E)::QAB(D)
- Q(c);N_GUARD,P_PINR(C)::R(G)+S(F),XQ(c)
- Refutation
- Q(c);
- Try
- S(F);
- Threat
- S(F)
- Vars
- Q(c);CHECK,N_GUARD::R(G)+S(E),XQ(c)
- Q(c);N_GUARD::R1(C),XQ(c)
- Refutation
- Q(c);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(c);CHECK,N_GUARD::R(G)+S(E),XQ(c)
- Q(c);N_GUARD::R1(C),XQ(c)
- Refutation
- Q(c);P_PINR(C),XS(F)
- Try
- R(C);
- Threat
- S(E)
- Vars
- Q(c);CHECK,N_GUARD::R1(C),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- R(G);
- Threat
- QAB(D)
- Vars
- Q(c);N_GUARD,XR(G)::R1(C)
- Q(c);N_GUARD::R1(C),XQ(c)
- Refutation
- Q(c);CHECK
- Try
- R(G);
- Vars
- Q(c);CHECK,N_GUARD::R1(G),XQ(c)
- Q(c);N_GUARD,P_PINR(C)::R1(G)
- Q(c);N_GUARD::R1(C),XQ(c)
- Q(c);N_GUARD::QAB(D)
- Q(c);N_GUARD::R1(C)
- Q(c);N_GUARD::R1(G)
- Refutation
- P(b);
- Try
- Q(D);
- Threat
- DUALS(3)
- Refutation
- Q(c);CHECK
- Try
- Actual
- S(F);
- Threat
- QAB(D)
- Vars
- Q(c);CHECK,N_GUARD::R(G)+S(E),XQ(c)
- Q(c);N_GUARD,P_PINS(E),XS(F)::R1(C)
- Q(c);N_GUARD::R1(C),XQ(c)
- Q(c);N_GUARD::R(G)+S(E),XQ(c)
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).