MESON Chess Problem Database

Problem Display
PID: 77523 (8/8/3K2B1/6p1/7k/8/6Q1/5N1n w - - 0 1)

Zuncke, Klaus-Peter

Freie Presse, 1978

8/8/3K2B1/6p1/7k/8/6Q1/5N1n

#2

4 + 3

5454 Near Snap 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qg3#
    • 1...Sg3
      • 2.Qxg3#
  • Tries
    • 1.Kc5?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Kd5?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Ke5?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Kc6?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Ke6?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Kc7?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Kd7?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Ke7?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Sh2?
      • threat
        • 2.Sf3#
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Sf2
        • 2.Sf3#
      • 1...Sg3!
    • 1.Bf5?
      • threat
        • 2.Qxh1#
        • 2.Qh3#
        • 2.Qh2#
        • 2.Qg4#
      • 1...Kh5
        • 2.Qxh1#
        • 2.Qh3#
        • 2.Qh2#
      • 1...g4
        • 2.Qxg4#
      • 1...Sg3
        • 2.Qh3#
        • 2.Qh2#
      • 1...Sf2!
    • 1.Bf7?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Be8?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sf2
        • 2.Qg3#
      • 1...g4!
    • 1.Qf3?
      • threat
        • 2.Qh5#
      • 1...Sg3
        • 2.Qxg3#
      • 1...g4!
    • 1.Qxg5+?
      • 1...Kh3
        • 2.Bf5#
      • 1...Kxg5!
  • Keys
    • 1.Se3!
      • threat
        • 2.Sf5#
        • 2.Qh2#
        • 2.Qg4#
      • 1...g4
        • 2.Qxg4#
      • 1...Sf2
        • 2.Sf5#
      • 1...Sg3
        • 2.Qh2#

This anticipates 117083(1990)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD::QAB1(B),XS(a)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(C);P-FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • K(C);S_FLIGHT
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • S(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(B),XP(c)
        • S(a);::S(A)
      • Refutation
        • S(a);
    • Try
      • B(D);
      • Threat
        • DUALS(4)
      • Vars
        • P(c);::QAR1(B),XP(c)
      • Refutation
        • S(a);
    • Try
      • B(D);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • B(D);
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • P(c);
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • S(a);N_GUARD::QAB1(B),XS(a)
      • Refutation
        • P(c);
    • Try
      • Q(B);CHECK,XP(c)
      • Vars
        • K(b);P-FLIGHT::B(D)
      • Refutation
        • K(b);S_FLIGHT,XQ(B)
  • Actual
    • S(A);
    • Threat
      • DUALS(3)
    • Vars
      • P(c);::QAR1(B),XP(c)
      • S(a);::S(A)
      • S(a);::QAR2(B)
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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).