MESON Chess Problem Database

Problem Display
PID: 157931 (1b6/pk1K4/1P6/Q2R4/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1996

1b6/pk1K4/1P6/Q2R4/8/8/8/8

#2

4 + 3

15148 Sadier Collection 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Qxa7#
    • 1...Bg3
      • 2.Qxa7#
    • 1...Bf4
      • 2.Qxa7#
    • 1...Be5
      • 2.Qxa7#
    • 1...Bd6
      • 2.Qxa7#
    • 1...Bc7
      • 2.Qxa7#
  • Tries
    • 1.Rb5?
      • 1...Ka8
        • 2.b7#
      • 1...axb6
        • 2.Rxb6#
      • 1...Bh2
        • 2.Qxa7#
      • 1...Bg3
        • 2.Qxa7#
      • 1...Bf4
        • 2.Qxa7#
      • 1...Be5
        • 2.Qxa7#
      • 1...Bd6
        • 2.Qxa7#
      • 1...Bc7
        • 2.Qxa7#
      • 1...a6!
    • 1.Qa6+?
      • 1...Ka8
        • 2.b7#
      • 1...Kxa6!
  • Keys
    • 1.Rd6!
      • 1...Ka8
        • 2.Qd5#
      • 1...Bxd6
        • 2.Qxa7#
      • 1...axb6
        • 2.Rxb6#
      • 1...Bc7
        • 2.Qxa7#
      • 1...a6
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(c);N_GUARD::QAR1(A),XP(a)
  • Tries
    • Try
      • R(B);
      • Vars
        • K(b);OGATE,P_SPINP(a),S_FLIGHT::P(C)
        • P(a);OGATE,P_SPINP(a),XP(C)::R1(B),XP(a)
        • B(c);N_GUARD::QAR1(A),XP(a)
      • Refutation
        • P(a);
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,P_SPINP(a),S_FLIGHT::P(C)
      • Refutation
        • K(b);S_FLIGHT,XQ(A)
  • Actual
    • R(B);
    • Vars
      • K(b);P_SPINP(a),S_FLIGHT::QAB(A)
      • B(c);N_GUARD,XR(B)::QAR1(A),XP(a)
      • P(a);OGATE,XP(C)::R1(B),XP(a)
      • B(c);N_GUARD::QAR1(A),XP(a)
      • P(a);SBLOCK::QAB(A)
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).