MESON Chess Problem Database

Problem Display
PID: 203424 (B7/p1Q5/Pp6/3N4/3k1Pp1/3p2P1/1n1N4/3nK3 w - - 0 1)

Nanning, Willem

De Maasbode, 1924

B7/p1Q5/Pp6/3N4/3k1Pp1/3p2P1/1n1N4/3nK3

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Se3
      • 2.Qc3#
    • 1...Sa4
      • 2.Qc4#
    • 1...Sc4
      • 2.Qxc4#
    • 1...b5
      • 2.Qxa7#
  • Tries
    • 1.Kf1?
      • 1...Sf2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...b5
        • 2.Qxa7#
      • 1...Se3+!
    • 1.Sc3?
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe5#
      • 1...Sc4!
    • 1.Se3?
      • threat
        • 2.Sf5#
        • 2.Qe5#
      • 1...Kxe3
        • 2.Qe5#
      • 1...Sxe3
        • 2.Sb3#
        • 2.Qe5#
      • 1...Sc4!
    • 1.Sb4?
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe5#
      • 1...Sc4!
    • 1.Sxb6?
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe5#
        • 2.Qc5#
      • 1...Sc4!
    • 1.Sf6?
      • threat
        • 2.Qe5#
      • 1...Ke3
        • 2.Qe5#
      • 1...Sc4!
    • 1.Se7?
      • threat
        • 2.Sf5#
        • 2.Qe5#
      • 1...Ke3
        • 2.Sf5#
        • 2.Qe5#
      • 1...Se3
        • 2.Sb3#
        • 2.Qe5#
      • 1...Sc4!
    • 1.Bb7?
      • 1...Sf2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...b5!
    • 1.Qc1?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sf2
        • 2.Qc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Qc4#
      • 1...b5!
    • 1.Qc6?
      • 1...Sf2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...b5!
    • 1.Qc8?
      • 1...Sf2
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sa4
        • 2.Qc4#
      • 1...Sc4
        • 2.Qxc4#
      • 1...b5!
  • Keys
    • 1.Qe7!
      • 1...Sf2
        • 2.Qe3#
      • 1...Sc3
        • 2.Qe3#
      • 1...Se3
        • 2.Qxe3#
      • 1...Sa4
        • 2.Qb4#
      • 1...Sc4
        • 2.Sb3#
      • 1...b5
        • 2.Qxa7#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 5
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(G)
    • S(a);N_GUARD::QAB1(G),XS(a)
    • S(b);N_GUARD::QAR1(G)
    • S(b);N_GUARD::QAR1(G),XS(b)
    • P(f);OGATEB::QAB(G),XP(g)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(G)
        • S(a);N_GUARD::QAB1(G),XS(a)
        • S(b);N_GUARD::QAR1(G)
        • S(b);N_GUARD::QAR1(G),XS(b)
        • P(f);OGATEB::QAB(G),XP(g)
      • Refutation
        • S(a);CHECK
    • Try
      • S(E);
      • Threat
        • QAB1(G)
      • Vars
        • K(d);S_FLIGHT::QAR2(G)
      • Refutation
        • S(b);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT,XS(E)::QAR2(G)
      • Refutation
        • S(b);
    • Try
      • S(E);
      • Threat
        • QAB1(G)
      • Vars
        • K(d);S_FLIGHT::QAR2(G)
      • Refutation
        • S(b);
    • Try
      • S(E);XP(f)
      • Threat
        • QAB1(G)
      • Refutation
        • S(b);
    • Try
      • S(E);
      • Threat
        • QAB1(G)
      • Vars
        • K(d);S_FLIGHT::QAR2(G)
      • Refutation
        • S(b);
    • Try
      • S(E);
      • Threat
        • DUALS(2)
      • Refutation
        • S(b);
    • Try
      • B(H);
      • Vars
        • S(a);N_GUARD::QAB1(G)
        • S(a);N_GUARD::QAB1(G),XS(a)
        • S(b);N_GUARD::QAR1(G)
        • S(b);N_GUARD::QAR1(G),XS(b)
      • Refutation
        • P(f);
    • Try
      • Q(G);
      • Vars
        • S(a);N_GUARD::QAB1(G),XS(a)
        • S(b);N_GUARD::QAR1(G),XS(b)
        • S(a);N_GUARD::QAB1(G)
        • S(b);N_GUARD::QAR1(G)
      • Refutation
        • P(f);
    • Try
      • Q(G);
      • Vars
        • S(a);N_GUARD::QAB1(G)
        • S(a);N_GUARD::QAB1(G),XS(a)
        • S(b);N_GUARD::QAR1(G)
        • S(b);N_GUARD::QAR1(G),XS(b)
      • Refutation
        • P(f);
    • Try
      • Q(G);
      • Vars
        • S(a);N_GUARD::QAB1(G)
        • S(a);N_GUARD::QAB1(G),XS(a)
        • S(b);N_GUARD::QAR1(G)
        • S(b);N_GUARD::QAR1(G),XS(b)
      • Refutation
        • P(f);
  • Actual
    • Q(G);
    • Vars
      • S(a);N_GUARD::QAB1(G)
      • S(a);N_GUARD::QAB1(G),XS(a)
      • S(b);N_GUARD::QAR2(G)
      • S(b);SBLOCK::S(B)
      • P(f);OGATEB::QAB(G),XP(g)
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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).