MESON Chess Problem Database

Problem Display
PID: 172253 (k7/2K5/1rP5/8/P7/8/2Q5/6B1 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kubanski krai, 1996

k7/2K5/1rP5/8/P7/8/2Q5/6B1

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc6+
      • 2.Qxc6#
    • 1...Rb7+
      • 2.cxb7#
  • Keys
    • 1.Qc5!
      • 1...Rxc6+
        • 2.Qxc6#
      • 1...Rb7+
        • 2.cxb7#
      • 1...Ka7
        • 2.Qa5#
      • 1...Rb1
        • 2.Qa7#
        • 2.Qa5#
      • 1...Rb2
        • 2.Qa7#
        • 2.Qa5#
      • 1...Rb3
        • 2.Qa7#
        • 2.Qa5#
      • 1...Rb4
        • 2.Qa7#
        • 2.Qa5#
      • 1...Rb5
        • 2.Qa7#
      • 1...Ra6
        • 2.Qf8#
      • 1...Rb8
        • 2.Qa7#
        • 2.Qa5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(a);CHECK,OGATE,XP(D)::QAB(B),XR(a)
    • R(a);CHECK,OGATE::P(D),XR(a)
  • Actual
    • Q(B);
    • Vars
      • R(a);CHECK,OGATE,XP(D)::QAB(B),XR(a)
      • R(a);CHECK,OGATE::P(D),XR(a)
      • K(b);P-FLIGHT,P_SPINR(a)::QAR2(B)
      • R(a);OGATE::QAR1(B)
      • R(a);N_GUARD::QAR(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).