MESON Chess Problem Database

Problem Display
PID: 159221 (4K3/4BP2/7k/5Q2/8/8/8/6r1 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

4K3/4BP2/7k/5Q2/8/8/8/6r1

#2

4 + 2

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Kg7
      • 2.f8Q#
    • 1...Ra1
      • 2.Bf8#
      • 2.f8Q#
      • 2.f8B#
    • 1...Rb1
      • 2.Bf8#
      • 2.f8Q#
      • 2.f8B#
    • 1...Rc1
      • 2.Bf8#
      • 2.f8Q#
      • 2.f8B#
    • 1...Rd1
      • 2.Bf8#
      • 2.f8Q#
      • 2.f8B#
    • 1...Re1
      • 2.f8Q#
      • 2.f8B#
    • 1...Rf1
      • 2.Bf8#
      • 2.f8Q#
      • 2.f8B#
    • 1...Rh1
      • 2.Bf8#
      • 2.f8Q#
      • 2.f8B#
  • Tries
    • 1.Qh5+?
      • 1...Kg7
        • 2.f8Q#
      • 1...Kxh5!
  • Keys
    • 1.f8S!
      • threat
        • 2.Qh7#
      • 1...Kg7
        • 2.Qh7#
      • 1...Rg7
        • 2.Qh3#
      • 1...Rg6
        • 2.Qxg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::P=Q
    • R(a);N_GUARD,P_PINB(B)::P=Q
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::P=Q
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
  • Actual
    • P(C);
    • Threat
      • QAR1(A)
    • Vars
      • K(b);S_FLIGHT::QAR1(A)
      • R(a);SBLOCK::QAR(A)
      • R(a);N_GUARD::QAR1(A),XR(a)
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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).