MESON Chess Problem Database

Problem Display
PID: 138194 (1R5Q/3N2p1/p3Bppq/8/K2pk1n1/3p4/5R2/2B2N1n w - - 0 1)

Franco, Francesco

SEPA, 1979

1R5Q/3N2p1/p3Bppq/8/K2pk1n1/3p4/5R2/2B2N1n

#2

8 + 10

14744 Nuova Antologia dei Problemisti Italiani 1992

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc1
      • 2.Qxh1#
    • 1...Qd2
      • 2.Qxh1#
    • 1...Qf4
      • 2.Rxf4#
    • 1...Qg5
      • 2.Qxh1#
    • 1...Qh3
      • 2.Rf4#
    • 1...Qh4
      • 2.Rf4#
    • 1...Qh5
      • 2.Rf4#
    • 1...Qh7
      • 2.Rf4#
    • 1...Qxh8
      • 2.Rf4#
    • 1...Sg3
      • 2.Sxg3#
    • 1...Se3
      • 2.Sd2#
    • 1...Se5
      • 2.Sc5#
  • Tries
    • 1.Rf5?
      • threat
        • 2.Sc5#
      • 1...Qxc1
        • 2.Qxh1#
      • 1...Qf4
        • 2.Rxf4#
      • 1...gxf5!
    • 1.Rb1?
      • threat
        • 2.Qa8#
      • 1...Qxc1
        • 2.Qxh1#
      • 1...Qxh8
        • 2.Rf4#
      • 1...Qg5
        • 2.Qxh1#
      • 1...Qh5
        • 2.Rf4#
      • 1...Se3
        • 2.Sd2#
      • 1...Se5
        • 2.Sc5#
      • 1...d2!
    • 1.Rbb2?
      • threat
        • 2.Qa8#
      • 1...Qxc1
        • 2.Qxh1#
      • 1...Qxh8
        • 2.Rf4#
      • 1...Qg5
        • 2.Qxh1#
      • 1...Qh5
        • 2.Rf4#
      • 1...Se3
        • 2.Sd2#
      • 1...Se5
        • 2.Sc5#
      • 1...d2!
    • 1.Rb4?
      • threat
        • 2.Qa8#
      • 1...Qxc1
        • 2.Qxh1#
      • 1...Qxh8
        • 2.Rf4#
      • 1...Qg5
        • 2.Qxh1#
      • 1...Qh5
        • 2.Rf4#
      • 1...Se3
        • 2.Sd2#
      • 1...Se5
        • 2.Sc5#
      • 1...d2!
    • 1.Rb6?
      • threat
        • 2.Qa8#
      • 1...Qxc1
        • 2.Qxh1#
      • 1...Qxh8
        • 2.Rf4#
      • 1...Qg5
        • 2.Qxh1#
      • 1...Qh5
        • 2.Rf4#
      • 1...Se3
        • 2.Sd2#
      • 1...Se5
        • 2.Sc5#
      • 1...d2!
    • 1.Qxh6?
      • threat
        • 2.Sd2#
        • 2.Rf4#
        • 2.Qf4#
        • 2.Qxh1#
      • 1...Shxf2
        • 2.Sd2#
        • 2.Qf4#
      • 1...Sgxf2
        • 2.Sd2#
        • 2.Qf4#
      • 1...Sxh6
        • 2.Rf4#
      • 1...gxh6
        • 2.Rf4#
      • 1...Sg3
        • 2.Sd2#
        • 2.Sxg3#
        • 2.Rf4#
        • 2.Qf4#
      • 1...Sh2
        • 2.Sd2#
        • 2.Rf4#
        • 2.Qf4#
      • 1...Se3
        • 2.Sd2#
        • 2.Rf4#
        • 2.Qf4#
      • 1...Se5
        • 2.Sd2#
        • 2.Sc5#
        • 2.Rf4#
        • 2.Qf4#
      • 1...g5
        • 2.Qxh1#
      • 1...d2!
  • Keys
    • 1.Rb3!
      • threat
        • 2.Qa8#
      • 1...Qxc1
        • 2.Qxh1#
      • 1...Qxh8
        • 2.Rf4#
      • 1...Qg5
        • 2.Qxh1#
      • 1...Qh5
        • 2.Rf4#
      • 1...Se3
        • 2.Sd2#
      • 1...Se5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 6
  • Sets
    • Q(i);OGATE,XB(A)::QAB(H),XS(a)
    • Q(i);OGATE::QAB(H),XS(a)
    • Q(i);N_GUARD::R1(C),XQ(i)
    • Q(i);N_GUARD::R1(C)
    • Q(i);N_GUARD,XQ(H)::R1(C)
    • S(a);N_GUARD::S(B),XS(a)
    • S(e);SBLOCK,S_CUTQ(i)::S(B)
    • S(e);SBLOCK::S(F)
  • Tries
    • Try
      • R(C);
      • Threat
        • S(F)
      • Vars
        • Q(i);OGATE,XB(A)::QAB(H),XS(a)
        • Q(i);N_GUARD::R1(C),XQ(i)
      • Refutation
        • P(h);XR(C)
    • Try
      • R(G);
      • Threat
        • QAB(H)
      • Vars
        • Q(i);OGATE,XB(A)::QAB(H),XS(a)
        • Q(i);N_GUARD,XQ(H)::R1(C)
        • Q(i);OGATE::QAB(H),XS(a)
        • Q(i);N_GUARD::R1(C)
        • S(e);SBLOCK,S_CUTQ(i)::S(B)
        • S(e);SBLOCK::S(F)
      • Refutation
        • P(b);
    • Try
      • R(G);
      • Threat
        • QAB(H)
      • Vars
        • Q(i);OGATE,XB(A)::QAB(H),XS(a)
        • Q(i);N_GUARD,XQ(H)::R1(C)
        • Q(i);OGATE::QAB(H),XS(a)
        • Q(i);N_GUARD::R1(C)
        • S(e);SBLOCK,S_CUTQ(i)::S(B)
        • S(e);SBLOCK::S(F)
      • Refutation
        • P(b);
    • Try
      • R(G);P_PINP(c)
      • Threat
        • QAB(H)
      • Vars
        • Q(i);OGATE,XB(A)::QAB(H),XS(a)
        • Q(i);N_GUARD,XQ(H)::R1(C)
        • Q(i);OGATE::QAB(H),XS(a)
        • Q(i);N_GUARD::R1(C)
        • S(e);SBLOCK,S_CUTQ(i)::S(B)
        • S(e);SBLOCK::S(F)
      • Refutation
        • P(b);
    • Try
      • R(G);
      • Threat
        • QAB(H)
      • Vars
        • Q(i);OGATE,XB(A)::QAB(H),XS(a)
        • Q(i);N_GUARD,XQ(H)::R1(C)
        • Q(i);OGATE::QAB(H),XS(a)
        • Q(i);N_GUARD::R1(C)
        • S(e);SBLOCK,S_CUTQ(i)::S(B)
        • S(e);SBLOCK::S(F)
      • Refutation
        • P(b);
    • Try
      • Q(H);XQ(i)
      • Threat
        • DUALS(4)
      • Vars
        • S(e);XQ(H)::R1(C)
        • P(j);XQ(H)::R1(C)
        • P(h);::QAB(H),XS(a)
      • Refutation
        • P(b);
  • Actual
    • R(G);
    • Threat
      • QAB(H)
    • Vars
      • Q(i);OGATE,XB(A)::QAB(H),XS(a)
      • Q(i);N_GUARD,XQ(H)::R1(C)
      • Q(i);OGATE::QAB(H),XS(a)
      • Q(i);N_GUARD::R1(C)
      • S(e);SBLOCK,S_CUTQ(i)::S(B)
      • S(e);SBLOCK::S(F)
HTML5 logo

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).