MESON Chess Problem Database

Problem Display
PID: 172252 (8/2K1p3/2p5/3k4/8/3BP3/8/3Q4 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kubanski krai, 1996

8/2K1p3/2p5/3k4/8/3BP3/8/3Q4

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qb3+?
      • 1...Kc5
        • 2.Qc4#
      • 1...Ke5!
    • 1.Qf3+?
      • 1...Ke5
        • 2.Qf5#
      • 1...Ke6
        • 2.Qf5#
      • 1...Kc5!
    • 1.Qh5+?
      • 1...Ke6
        • 2.Qf5#
      • 1...e5!
  • Keys
    • 1.Qg4!
      • 1...Kc5
        • 2.Qc4#
        • 2.Qd4#
      • 1...Ke5
        • 2.Qf5#
      • 1...c5
        • 2.Qe4#
      • 1...e5
        • 2.Qc4#
      • 1...e6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(A)
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAR1(A)
      • P(b);SBLOCK::QAB1(A)
      • P(c);SBLOCK::QAB1(A)
      • P(c);SBLOCK::QAR1(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).