MESON Chess Problem Database

Problem Display
PID: 160571 (6K1/8/5Npk/7P/8/4P3/1Q6/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

6K1/8/5Npk/7P/8/4P3/1Q6/8

#2

5 + 2

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Tries
    • 1.Se4?
      • threat
        • 2.Qh8#
      • 1...gxh5
        • 2.Qf6#
        • 2.Qg7#
        • 2.Qb6#
      • 1...Kxh5!
    • 1.Qe5?
      • threat
        • 2.Sg4#
      • 1...gxh5
        • 2.Qxh5#
      • 1...g5!
    • 1.Qg2?
      • threat
        • 2.Qxg6#
      • 1...gxh5
        • 2.Qg7#
      • 1...g5!
    • 1.Qb4?
      • 1...Kg5
        • 2.Qf4#
      • 1...g5
        • 2.Qf8#
      • 1...gxh5!
    • 1.Qb5?
      • threat
        • 2.Sg4#
      • 1...gxh5
        • 2.Qxh5#
      • 1...g5!
    • 1.Qb7?
      • 1...gxh5
        • 2.Qg7#
      • 1...g5
        • 2.Qg7#
        • 2.Qh7#
      • 1...Kg5!
    • 1.Qb8?
      • 1...Kg5
        • 2.Qf4#
      • 1...g5
        • 2.Qf8#
      • 1...gxh5!
  • Keys
    • 1.Qh2!
      • 1...Kg5
        • 2.Qf4#
      • 1...gxh5
        • 2.Qxh5#
      • 1...g5
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • QAR2(A)
      • Refutation
        • K(b);P-FLIGHT,XP(C)
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Vars
        • P(a);OGATE,XP(C)::QAR1(A),XP(a)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(a)
      • Vars
        • P(a);OGATE,XP(C)::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(a);SBLOCK::QAB(A)
      • Refutation
        • P(a);XP(C)
    • Try
      • Q(A);
      • Threat
        • S(D)
      • Vars
        • P(a);OGATE,XP(C)::QAR1(A),XP(a)
      • Refutation
        • P(a);
    • Try
      • Q(A);
      • Vars
        • P(a);XP(C)::QAB1(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(b);S_FLIGHT::QAB1(A)
        • P(a);SBLOCK::QAB(A)
      • Refutation
        • P(a);XP(C)
  • Actual
    • Q(A);
    • Vars
      • K(b);S_FLIGHT::QAB1(A)
      • P(a);OGATE,P_SPINP(a),XP(C)::QAR1(A),XP(a)
      • P(a);SBLOCK::S(D)
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).