MESON Chess Problem Database

Problem Display
PID: 172250 (8/8/5K2/3p1p2/4k3/3p4/5Q2/3B4 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kubanski krai, 1996

8/8/5K2/3p1p2/4k3/3p4/5Q2/3B4

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...d2
      • 2.Bc2#
    • 1...d4
      • 2.Qf3#
    • 1...f4
      • 2.Bf3#
  • Tries
    • 1.Ba4?
      • 1...d2
        • 2.Bc2#
      • 1...d4
        • 2.Bc6#
      • 1...f4!
    • 1.Bg4?
      • threat
        • 2.Bxf5#
      • 1...d4
        • 2.Qf3#
      • 1...f4
        • 2.Bf3#
        • 2.Bf5#
      • 1...fxg4!
    • 1.Bh5?
      • 1...d4
        • 2.Qf3#
      • 1...f4
        • 2.Bf3#
        • 2.Bg6#
      • 1...d2!
    • 1.Qe1+?
      • 1...Kf4
        • 2.Qe5#
      • 1...Kd4!
  • Keys
    • 1.Ke6!
      • 1...d2
        • 2.Bc2#
      • 1...d4
        • 2.Qf3#
      • 1...f4
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(a);OGATEB::B(A)
    • P(c);SBLOCK::QAB1(B)
    • P(d);SBLOCK::B(A)
  • Tries
    • Try
      • B(A);
      • Vars
        • P(a);OGATEB::B(A)
        • P(c);OGATEB::B(A)
      • Refutation
        • P(d);
    • Try
      • B(A);
      • Threat
        • B(A),XP(d)
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • P(d);XB(A)
    • Try
      • B(A);
      • Vars
        • P(c);SBLOCK::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);CHECK
      • Vars
        • K(b);OGATE,P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(C);P-FLIGHT
    • Vars
      • P(a);OGATEB::B(A)
      • P(c);SBLOCK::QAB1(B)
      • P(d);SBLOCK::B(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).