MESON Chess Problem Database
Problem Display
PID: 12302 (K2N4/Q6p/3p4/p2k3r/1P1N3r/1P2RP2/1n5B/2b3q1 w - - 0 1)
Fleck, Ferenc
1st HM., SEPA, 1977
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Rxd4
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Re4
- 2.fxe4#
- 1...Rxd4
- Tries
- 1.Sc2?
- threat
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qxe3
- 2.Qb7#
- 1...Bxe3
- 2.Qb7#
- 2.Qf7#
- 1...axb4
- 2.Qa5#
- 1...Qf1
- 2.Qb7#
- 2.Qf7#
- 1...Qg4
- 2.Qxa5#
- 2.Qb7#
- 1...Qg6
- 2.Qxa5#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Qg8
- 2.Qxa5#
- 2.Qb7#
- 1...Rc4
- 2.Qf7#
- 1...Re4
- 2.Qxa5#
- 2.Qb7#
- 2.fxe4#
- 1...Rf4
- 2.Qxa5#
- 2.Qb7#
- 1...Re5
- 2.Qxa5#
- 2.Qb7#
- 1...Rf5
- 2.Qxa5#
- 2.Qb7#
- 1...Rh6
- 2.Qxa5#
- 2.Qb7#
- 1...Sd3
- 2.Qb7#
- 2.Qf7#
- 1...Sa4
- 2.Qb7#
- 2.Qf7#
- 1...Sc4
- 2.Qb7#
- 2.Qf7#
- 1...a4
- 2.Qa5#
- 2.Qb7#
- 2.Qf7#
- 1...Rxb4!
- threat
- 1.Sb5?
- threat
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 2.Qf7#
- 1...Qxe3
- 2.Sc7#
- 2.Qb7#
- 1...Rxb4
- 2.Sc3#
- 2.Sc7#
- 1...axb4
- 2.Sc7#
- 1...Qe1
- 2.Sc7#
- 2.Qb7#
- 2.Qf7#
- 1...Qg4
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 1...Qg6
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 1...Qg8
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 1...Rc4
- 2.Qf7#
- 1...Re4
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 2.fxe4#
- 1...Rf4
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 1...Re5
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 1...Rf5
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 1...Rh6
- 2.Sc3#
- 2.Sc7#
- 2.Qb7#
- 1...Bd2
- 2.Sc7#
- 2.Qb7#
- 2.Qf7#
- 1...Sd1
- 2.Sc7#
- 2.Qb7#
- 2.Qf7#
- 1...Sa4
- 2.Sc7#
- 2.Qb7#
- 2.Qf7#
- 1...Qg7!
- threat
- 1.Sf5?
- threat
- 2.Se7#
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qxe3
- 2.Qb7#
- 1...Rxb4
- 2.Se7#
- 1...Bxe3
- 2.Se7#
- 2.Qb7#
- 2.Qf7#
- 1...axb4
- 2.Se7#
- 2.Qa5#
- 1...Qf1
- 2.Se7#
- 2.Qb7#
- 2.Qf7#
- 1...Qg5
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qg6
- 2.Se7#
- 2.Qxa5#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Qg8
- 2.Se7#
- 2.Qxa5#
- 2.Qb7#
- 1...Rc4
- 2.Se7#
- 2.Qf7#
- 1...Re4
- 2.Qxa5#
- 2.Qb7#
- 2.fxe4#
- 1...Rh6
- 2.Se7#
- 2.Qxa5#
- 2.Qb7#
- 1...Sd3
- 2.Se7#
- 2.Qb7#
- 2.Qf7#
- 1...Sa4
- 2.Se7#
- 2.Qb7#
- 2.Qf7#
- 1...Sc4
- 2.Se7#
- 2.Qb7#
- 2.Qf7#
- 1...a4
- 2.Se7#
- 2.Qa5#
- 2.Qb7#
- 2.Qf7#
- 1...Rxf5!
- threat
- 1.S4c6?
- threat
- 2.Se7#
- 2.Qxa5#
- 2.Qf7#
- 1...Rxb4
- 2.Se7#
- 1...Bxe3
- 2.Se7#
- 2.Qf7#
- 1...axb4
- 2.Se7#
- 2.Qa5#
- 1...Qf1
- 2.Se7#
- 2.Qf7#
- 1...Qg4
- 2.Se7#
- 2.Qxa5#
- 1...Qg5
- 2.Qxa5#
- 2.Qf7#
- 1...Qg6
- 2.Se7#
- 2.Qxa5#
- 1...Qg7
- 2.Qxa5#
- 1...Qg8
- 2.Se7#
- 2.Qxa5#
- 1...Rc4
- 2.Se7#
- 2.Qf7#
- 1...Re4
- 2.Qxa5#
- 2.fxe4#
- 1...Rf4
- 2.Se7#
- 2.Qxa5#
- 1...Re5
- 2.Qxa5#
- 1...Rf5
- 2.Se7#
- 2.Qxa5#
- 1...Rh6
- 2.Se7#
- 2.Qxa5#
- 1...Sd3
- 2.Se7#
- 2.Qf7#
- 1...Sa4
- 2.Se7#
- 2.Qf7#
- 1...Sc4
- 2.Se7#
- 2.Qf7#
- 1...a4
- 2.Se7#
- 2.Qa5#
- 2.Qf7#
- 1...Qxe3!
- threat
- 1.S4e6?
- threat
- 2.Sc7#
- 2.Qxa5#
- 2.Qb7#
- 1...Qxe3
- 2.Sc7#
- 2.Qb7#
- 1...Rxb4
- 2.Sc7#
- 1...Bxe3
- 2.Sc7#
- 2.Qb7#
- 1...axb4
- 2.Sc7#
- 2.Qa5#
- 2.Qb7#
- 1...Qf1
- 2.Sc7#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Sd3
- 2.Sc7#
- 2.Qb7#
- 1...Sa4
- 2.Sc7#
- 2.Qb7#
- 1...Sc4
- 2.Sc7#
- 2.Qb7#
- 1...a4
- 2.Sc7#
- 2.Qa5#
- 2.Qb7#
- 1...Rc4!
- threat
- 1.S8c6?
- threat
- 2.Se7#
- 2.Qxa5#
- 2.Qf7#
- 1...Qxe3
- 2.Qxa5#
- 1...Rxd4
- 2.Se7#
- 1...axb4
- 2.Sxb4#
- 2.Se7#
- 2.Qa5#
- 1...Qf1
- 2.Se7#
- 2.Qf7#
- 1...Qg4
- 2.Se7#
- 2.Qxa5#
- 1...Qg5
- 2.Qxa5#
- 2.Qf7#
- 1...Qg6
- 2.Se7#
- 2.Qxa5#
- 1...Qg7
- 2.Qxa5#
- 1...Re4
- 2.Qxa5#
- 2.fxe4#
- 1...Rf4
- 2.Se7#
- 2.Qxa5#
- 1...Re5
- 2.Qxa5#
- 1...Rf5
- 2.Se7#
- 2.Qxa5#
- 1...Rh6
- 2.Se7#
- 2.Qxa5#
- 1...Sd3
- 2.Se7#
- 2.Qf7#
- 1...Sa4
- 2.Se7#
- 2.Qf7#
- 1...Sc4
- 2.Se7#
- 2.Qf7#
- 1...a4
- 2.Se7#
- 2.Qa5#
- 2.Qf7#
- 1...Qg8+!
- threat
- 1.S8e6?
- threat
- 2.Sc7#
- 2.Qxa5#
- 2.Qb7#
- 1...Rxd4
- 2.Qb7#
- 1...axb4
- 2.Sc7#
- 2.Qa5#
- 2.Qb7#
- 1...Qf1
- 2.Sc7#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Sd3
- 2.Sc7#
- 2.Qb7#
- 1...Sa4
- 2.Sc7#
- 2.Qb7#
- 1...Sc4
- 2.Sc7#
- 2.Qb7#
- 1...a4
- 2.Sc7#
- 2.Qa5#
- 2.Qb7#
- 1...Qg8+!
- threat
- 1.Be5?
- threat
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qxe3
- 2.Qxa5#
- 1...Bxe3
- 2.Qxa5#
- 1...axb4
- 2.Qa5#
- 1...dxe5
- 2.Qc5#
- 2.Qd7#
- 1...Re4
- 2.Qxa5#
- 1...Qf1
- 2.Qb7#
- 2.Qf7#
- 1...Qg4
- 2.Qxa5#
- 2.Qb7#
- 1...Qg6
- 2.Qxa5#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Qg8
- 2.Qxa5#
- 2.Qb7#
- 1...Rf4
- 2.Qxa5#
- 2.Qb7#
- 1...Rf5
- 2.Qxa5#
- 2.Qb7#
- 1...Rh6
- 2.Qxa5#
- 2.Qb7#
- 1...Sd3
- 2.Qb7#
- 2.Qf7#
- 1...Sa4
- 2.Qb7#
- 2.Qf7#
- 1...Sc4
- 2.Qb7#
- 2.Qf7#
- 1...a4
- 2.Qa5#
- 2.Qb7#
- 2.Qf7#
- 1...Rxe5!
- threat
- 1.Rd3?
- threat
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qxh2
- 2.Qxa5#
- 1...Rxh2
- 2.Qxa5#
- 1...axb4
- 2.Qa5#
- 1...Qg3
- 2.Qxa5#
- 1...Rf4
- 2.Qxa5#
- 1...Bf4
- 2.Qxa5#
- 1...Qe3
- 2.Qxa5#
- 2.Qb7#
- 1...Qe1
- 2.Qxa5#
- 2.Qb7#
- 1...Qg4
- 2.Qxa5#
- 2.Qb7#
- 1...Qg6
- 2.Qxa5#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Qg8
- 2.Qxa5#
- 2.Qb7#
- 1...Re4
- 2.Qxa5#
- 2.Qb7#
- 1...Re5
- 2.Qxa5#
- 2.Qb7#
- 1...Rf5
- 2.Qxa5#
- 2.Qb7#
- 1...Rh6
- 2.Qxa5#
- 2.Qb7#
- 1...Sa4
- 2.Qb7#
- 2.Qf7#
- 1...Sc4
- 2.Qb7#
- 2.Qf7#
- 1...a4
- 2.Qa5#
- 2.Qb7#
- 2.Qf7#
- 1...Sxd3!
- threat
- 1.Re4?
- threat
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qxd4
- 2.Qxd4#
- 2.Qb7#
- 2.Qf7#
- 1...axb4
- 2.Qa5#
- 1...Qf1
- 2.Qb7#
- 2.Qf7#
- 1...Qg4
- 2.Qxa5#
- 2.Qb7#
- 1...Qg6
- 2.Qxa5#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Qg8
- 2.Qxa5#
- 2.Qb7#
- 1...Rf4
- 2.Qxa5#
- 2.Qb7#
- 1...Re5
- 2.Qxa5#
- 2.Qb7#
- 1...Rf5
- 2.Qxa5#
- 2.Qb7#
- 1...Rh6
- 2.Qxa5#
- 2.Qb7#
- 1...Sd3
- 2.Qb7#
- 2.Qf7#
- 1...Sa4
- 2.Qb7#
- 2.Qf7#
- 1...Sc4
- 2.Qb7#
- 2.Qf7#
- 1...a4
- 2.Qa5#
- 2.Qb7#
- 2.Qf7#
- 1...Rxe4!
- threat
- 1.Re5+?
- 1...dxe5
- 2.Qc5#
- 2.Qd7#
- 1...Rxe5!
- 1...dxe5
- 1.Sc2?
- Keys
- 1.Se2!
- threat
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qxe3
- 2.Qb7#
- 1...Rxb4
- 2.Sc3#
- 1...Bxe3
- 2.Sc3#
- 2.Qb7#
- 2.Qf7#
- 1...axb4
- 2.Qa5#
- 1...Qe1
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Qg4
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 1...Qg6
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 1...Qg7
- 2.Qxa5#
- 1...Qg8
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 1...Rc4
- 2.Qf7#
- 1...Re4
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 2.fxe4#
- 1...Rf4
- 2.Sc3#
- 2.Sxf4#
- 2.Qxa5#
- 2.Qb7#
- 1...Re5
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 1...Rf5
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 1...Rh6
- 2.Sc3#
- 2.Qxa5#
- 2.Qb7#
- 1...Bd2
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Sd1
- 2.Qxa5#
- 2.Qb7#
- 2.Qf7#
- 1...Sd3
- 2.Sc3#
- 2.Qb7#
- 2.Qf7#
- 1...Sa4
- 2.Qb7#
- 2.Qf7#
- 1...Sc4
- 2.Sc3#
- 2.Qb7#
- 2.Qf7#
- 1...a4
- 2.Sc3#
- 2.Qa5#
- 2.Qb7#
- 2.Qf7#
- threat
- 1.Se2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- R(d);OGATE::P(D),XR(d)
- Tries
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- Q(b);XR(C)::QAB(G)
- P(e);XP(E)::QAR(G)
- Q(b);::QAR(G),XP(e)
- R(d);::QAB(G)
- Refutation
- R(d);XP(E)
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- P(e);XP(E)::S(F)
- R(d);::QAB(G)
- Refutation
- Q(b);
- Try
- S(F);
- Threat
- DUALS(4)
- Vars
- Q(b);XR(C)::QAB(G)
- R(d);XP(E)::S(F)
- Q(b);::QAR(G),XP(e)
- Refutation
- R(g);XS(F)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(d);XP(E)::S(F)
- Q(b);::QAR(G),XP(e)
- R(g);::QAR(G),XP(e)
- Refutation
- Q(b);XR(C)
- Try
- S(F);
- Threat
- DUALS(3)
- Vars
- R(d);XP(E)::S(F)
- Q(b);::QAR(G),XP(e)
- Refutation
- R(d);
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- Q(b);XR(C)::QAR(G),XP(e)
- R(d);XS(F)::S(I)
- Q(b);::QAR(G),XP(e)
- R(g);::QAR(G),XP(e)
- Refutation
- Q(b);CHECK
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- R(d);XS(F)::QAB(G)
- Q(b);::QAR(G),XP(e)
- Refutation
- Q(b);CHECK
- Try
- B(A);
- Threat
- DUALS(3)
- Vars
- Q(b);XR(C)::QAR(G),XP(e)
- B(a);XR(C)::QAR(G),XP(e)
- P(e);XP(E)::QAR(G)
- R(d);::QAR(G),XP(e)
- Q(b);::QAR(G),XP(e)
- Refutation
- R(g);XB(A)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- Q(b);XB(A)::QAR(G),XP(e)
- R(d);XB(A)::QAR(G),XP(e)
- P(e);XP(E)::QAR(G)
- Q(b);::QAR(G),XP(e)
- R(d);::QAR(G),XP(e)
- B(a);::QAR(G),XP(e)
- Refutation
- S(c);XR(C)
- Try
- R(C);
- Threat
- DUALS(3)
- Vars
- P(e);XP(E)::QAR(G)
- Q(b);::QAR(G),XP(e)
- Refutation
- R(d);XR(C)
- Try
- R(C);CHECK
- Refutation
- R(g);XR(C)
- Try
- Actual
- S(F);
- Threat
- DUALS(4)
- Vars
- Q(b);XR(C)::QAB(G)
- R(d);XP(E)::S(F)
- P(e);XP(E)::QAR(G)
- Q(b);::QAR(G),XP(e)
- R(d);::QAB(G)
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).