MESON Chess Problem Database

Problem Display
PID: 172443 (8/5p2/2P1p3/3B1k1K/3Q4/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/5p2/2P1p3/3B1k1K/3Q4/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qf2#
    • 1...f6
      • 2.Qe4#
  • Tries
    • 1.Bh1?
      • 1...f6
        • 2.Qe4#
      • 1...e5!
    • 1.Qe3?
      • threat
        • 2.Qg5#
      • 1...Kf6
        • 2.Qg5#
      • 1...f6
        • 2.Bxe6#
        • 2.Qe4#
      • 1...exd5!
    • 1.Qg4+?
      • 1...Kf6
        • 2.Qg5#
      • 1...Ke5!
  • Keys
    • 1.c7!
      • 1...exd5
        • 2.c8Q#
        • 2.c8B#
      • 1...e5
        • 2.Qf2#
      • 1...f6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAR(A)
    • P(c);SBLOCK::QAB1(A)
  • Tries
    • Try
      • B(B);
      • Vars
        • P(c);SBLOCK::QAB1(A)
      • Refutation
        • P(b);
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • P(b);XB(B)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • P(D);
    • Vars
      • P(b);XB(B)::P=Q
      • P(b);SBLOCK::QAR(A)
      • P(c);SBLOCK::QAB1(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).