MESON Chess Problem Database

Problem Display
PID: 172483 (8/8/5p2/8/5Pk1/1Q5R/5K2/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2001

8/8/5p2/8/5Pk1/1Q5R/5K2/8

#2

4 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Qf3#
      • 2.Qg3#
  • Tries
    • 1.Rh5?
      • threat
        • 2.Qf3#
      • 1...Kxf4
        • 2.Qa4#
        • 2.Qc4#
        • 2.Qf3#
        • 2.Qb4#
      • 1...Kxh5!
    • 1.Qd3?
      • 1...f5
        • 2.Qf3#
        • 2.Qg3#
      • 1...Kxf4!
    • 1.Qe3?
      • 1...f5
        • 2.Qf3#
        • 2.Qg3#
      • 1...Kf5!
    • 1.Qb5?
      • 1...Kxh3
        • 2.Qh5#
      • 1...Kxf4
        • 2.Rh4#
      • 1...f5!
  • Keys
    • 1.Qd5!
      • 1...Kxh3
        • 2.Qh5#
      • 1...Kxf4
        • 2.Rh4#
      • 1...f5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);
      • Threat
        • QAB1(B)
      • Refutation
        • K(a);S_FLIGHT,XR(C)
    • Try
      • Q(B);
      • Refutation
        • K(a);P-FLIGHT,XP(D)
    • Try
      • Q(B);
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(a);S_FLIGHT,XR(C)::QAR2(B)
        • K(a);P-FLIGHT,XP(D)::R(C)
      • Refutation
        • P(b);
  • Actual
    • Q(B);
    • Vars
      • K(a);S_FLIGHT,XR(C)::QAR2(B)
      • K(a);P-FLIGHT,XP(D)::R(C)
      • P(b);SBLOCK::QAB1(B)
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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).