MESON Chess Problem Database
Problem Display
PID: 254547 (6b1/5Q2/4q3/B2n1N2/2kPP3/1R3Nr1/P6b/K4n2 w - - 0 1)
van Dooren, Rene
Probleemblad, 1983
#2
9 + 7
SOLUTION
- SOUND
- Sets
- 1...Qd7
- 2.Se5#
- 1...Qxf7
- 2.Se5#
- 2.Sd6#
- 1...Qc8
- 2.Se5#
- 2.Sd6#
- 1...Qxe4
- 2.Sd6#
- 1...Qe5
- 2.Sxe5#
- 1...Qa6
- 2.Se5#
- 1...Qb6
- 2.Se5#
- 1...Qc6
- 2.Se5#
- 1...Qd6
- 2.Sxd6#
- 1...Qg6
- 2.Se5#
- 1...Qh6
- 2.Se5#
- 1...Qe8
- 2.Sd6#
- 1...Sd2
- 2.Sxd2#
- 1...Sfe3
- 2.Sd2#
- 1...Sc3
- 2.Se5#
- 1...Sde3
- 2.Se5#
- 2.Sd6#
- 1...Sb4
- 2.Sd6#
- 1...Sf4
- 2.Se5#
- 2.Sd6#
- 1...Sb6
- 2.Se5#
- 2.Sd6#
- 1...Sf6
- 2.Se5#
- 2.Sd6#
- 1...Sc7
- 2.Se5#
- 2.Sd6#
- 1...Se7
- 2.Se5#
- 2.Sd6#
- 1...Qd7
- Tries
- 1.Qxe6?
- threat
- 2.Se5#
- 2.Sd6#
- 2.Qa6#
- 2.Qc6#
- 1...Rxf3
- 2.Qa6#
- 2.Qc6#
- 1...Bxe6
- 2.Se5#
- 2.Sd6#
- 1...Rg1
- 2.Qa6#
- 2.Qc6#
- 1...Rg2
- 2.Qa6#
- 2.Qc6#
- 1...Rh3
- 2.Qa6#
- 2.Qc6#
- 1...Rg4
- 2.Qa6#
- 2.Qc6#
- 1...Rg5
- 2.Qa6#
- 2.Qc6#
- 1...Rg7
- 2.Qa6#
- 2.Qc6#
- 1...Rg6!
- threat
- 1.Qe8?
- threat
- 2.Qb5#
- 1...Qxe8
- 2.Sd6#
- 1...Sc3
- 2.Rxc3#
- 1...Qd7
- 2.Se5#
- 1...Qa6
- 2.Se5#
- 1...Qb6
- 2.Se5#
- 1...Qc6
- 2.Se5#
- 2.Qxc6#
- 1...Sc7
- 2.Rc3#
- 2.Qa4#
- 1...Sb4!
- threat
- 1.Qa7?
- threat
- 2.Qc5#
- 1...Qc8
- 2.Se5#
- 2.Sd6#
- 1...Qb6
- 2.Se5#
- 1...Qc6
- 2.Se5#
- 1...Qd6
- 2.Sxd6#
- 1...Qe7
- 2.Qa6#
- 1...Sb6
- 2.Qa6#
- 1...Sc3!
- threat
- 1.Qc7+?
- 1...Qc6
- 2.Se5#
- 2.Sd6#
- 2.Qxc6#
- 1...Sxc7!
- 1...Qc6
- 1.Qd7?
- threat
- 2.Qb5#
- 1...Qxd7
- 2.Se5#
- 1...Sc3
- 2.Rxc3#
- 1...Qa6
- 2.Se5#
- 1...Qb6
- 2.Se5#
- 1...Qc6
- 2.Se5#
- 2.Qxc6#
- 1...Qe8
- 2.Sd6#
- 1...Sc7
- 2.Rc3#
- 2.Qa4#
- 1...Sb4!
- threat
- 1.Qxe6?
- Keys
- 1.Qb7!
- threat
- 2.Qb5#
- 1...Sc3
- 2.Rxc3#
- 1...Qd7
- 2.Se5#
- 1...Qa6
- 2.Se5#
- 2.Qxa6#
- 1...Qb6
- 2.Se5#
- 1...Qc6
- 2.Se5#
- 2.Qxc6#
- 1...Qe8
- 2.Sd6#
- 1...Sb4
- 2.Qxb4#
- 1...Sb6
- 2.Qa6#
- 1...Sc7
- 2.Rc3#
- 2.Qb4#
- threat
- 1.Qb7!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 9
- Sets
- Q(f);N_GUARD,P_SPINS(e)::S(D)
- Q(f);N_GUARD,P_SPINS(e),XP(F)::S(H)
- Q(f);N_GUARD,P_PINP(E),P_SPINS(e)::S(D),XQ(f)
- Q(f);N_GUARD,P_SPINS(e)::S(H),XQ(f)
- Q(f);N_GUARD,P_SPINS(e)::S(H)
- S(a);N_GUARD::S(D),XS(a)
- S(a);N_GUARD::S(D)
- S(e);P_SPINQ(f)::S(D)
- S(e);P_SPINQ(f)::S(H)
- Tries
- Try
- Q(I);P_PINS(e),XQ(f)
- Threat
- DUALS(4)
- Refutation
- R(c);
- Try
- Q(I);
- Threat
- QAB1(I)
- Vars
- Q(f);N_GUARD,XQ(I)::S(H)
- S(e);N_GUARD::R1(C),XS(e)
- Q(f);N_GUARD::S(D)
- Refutation
- S(e);
- Try
- Q(I);
- Threat
- QAR1(I)
- Vars
- Q(f);N_GUARD::S(D)
- Q(f);N_GUARD::S(H),XQ(f)
- Q(f);N_GUARD::QAB(I)
- S(e);S_CUTQ(f)::QAB(I)
- Refutation
- S(e);
- Try
- Q(I);CHECK
- Refutation
- S(e);XQ(I)
- Try
- Q(I);
- Threat
- QAB1(I)
- Vars
- Q(f);N_GUARD,XQ(I)::S(D)
- S(e);N_GUARD::R1(C),XS(e)
- Q(f);N_GUARD::S(D)
- Q(f);N_GUARD::S(H)
- Refutation
- S(e);
- Try
- Actual
- Q(I);
- Threat
- QAB1(I)
- Vars
- S(e);N_GUARD::R1(C),XS(e)
- Q(f);N_GUARD::S(D)
- Q(f);N_GUARD::S(H)
- S(e);N_GUARD::QAR1(I),XS(e)
- S(e);S_CUTQ(f)::QAB(I)
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).