MESON Chess Problem Database

Problem Display
PID: 140814 (3Q4/1B6/7p/5N2/5k2/5N2/8/K7 w - - 0 1)

Bantysh, Nikolai Ivanovich

Springaren, 2010

3Q4/1B6/7p/5N2/5k2/5N2/8/K7

#2

5 + 2

SOLUTION

  • SOUND
  • Sets
    • 1...h5
      • 2.Qg5#
  • Tries
    • 1.S3d4?
      • 1...Kg4
        • 2.Qh4#
      • 1...Ke5
        • 2.Qd6#
      • 1...h5!
    • 1.Sg3?
      • 1...Ke3
        • 2.Qd2#
        • 2.Qd4#
      • 1...Kg4
        • 2.Qh4#
      • 1...h5
        • 2.Qg5#
      • 1...Kxg3!
    • 1.Sxh6?
      • threat
        • 2.Qg5#
      • 1...Ke3
        • 2.Qd2#
      • 1...Kg3!
    • 1.Sg7?
      • 1...Ke3
        • 2.Qd2#
      • 1...Kg4
        • 2.Qh4#
      • 1...h5
        • 2.Qg5#
      • 1...Kg3!
    • 1.Be4?
      • threat
        • 2.Qh4#
      • 1...Kg4
        • 2.Qh4#
      • 1...Kxe4!
    • 1.Qf6?
      • 1...h5
        • 2.Qg5#
      • 1...Kg4!
    • 1.Qg8?
      • 1...h5
        • 2.Qg5#
      • 1...Kxf5!
  • Keys
    • 1.Se3!
      • 1...Kxe3
        • 2.Qd2#
      • 1...Kg3
        • 2.Qh4#
      • 1...h5
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(b);N_GUARD::QAB1(E)
  • Tries
    • Try
      • S(B);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • P(b);
    • Try
      • S(C);
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
        • P(b);N_GUARD::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT,XS(C)
    • Try
      • S(C);XP(b)
      • Threat
        • QAB1(E)
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);
      • Vars
        • K(a);S_FLIGHT::QAB1(E)
        • K(a);P-FLIGHT::QAR1(E)
        • P(b);N_GUARD::QAB1(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);
      • Threat
        • QAR2(E)
      • Vars
        • K(a);P-FLIGHT::QAR1(E)
      • Refutation
        • K(a);P-FLIGHT,XB(D)
    • Try
      • Q(E);
      • Vars
        • P(b);N_GUARD::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • P(b);N_GUARD::QAB1(E)
      • Refutation
        • K(a);P-FLIGHT,XS(C)
  • Actual
    • S(C);
    • Vars
      • K(a);OGATEB,S_FLIGHT,XS(C)::QAB1(E)
      • K(a);S_FLIGHT::QAB1(E)
      • P(b);N_GUARD::QAB1(E)
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).