MESON Chess Problem Database

Problem Display
PID: 172455 (2q5/k1BR4/7Q/K7/8/8/8/6R1 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

2q5/k1BR4/7Q/K7/8/8/8/6R1

#2

5 + 2

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kb7
      • 2.Qa6#
    • 1...Qa6+
      • 2.Qxa6#
    • 1...Qxd7
      • 2.Qa6#
    • 1...Qa8
      • 2.Qa6#
      • 2.Qb6#
    • 1...Qb8
      • 2.Qa6#
    • 1...Qd8
      • 2.Qa6#
    • 1...Qe8
      • 2.Qa6#
    • 1...Qf8
      • 2.Qa6#
    • 1...Qg8
      • 2.Qa6#
    • 1...Qh8
      • 2.Qa6#
  • Keys
    • 1.Rg8!
      • 1...Qa6+
        • 2.Qxa6#
      • 1...Qxc7+
        • 2.Rxc7#
        • 2.Qb6#
      • 1...Kb7
        • 2.Qa6#
      • 1...Ka8
        • 2.Qa6#
      • 1...Qxd7
        • 2.Qa6#
        • 2.Qb6#
      • 1...Qxg8
        • 2.Qa6#
      • 1...Qb7
        • 2.Bb6#
      • 1...Qa8
        • 2.Bb6#
        • 2.Bb8#
        • 2.Qa6#
        • 2.Qb6#
      • 1...Qb8
        • 2.Qa6#
      • 1...Qd8
        • 2.Qa6#
      • 1...Qe8
        • 2.Qa6#
      • 1...Qf8
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(a);P-FLIGHT::QAB1(C)
    • Q(b);CHECK,N_GUARD::QAR1(C),XQ(b)
    • Q(b);N_GUARD,XR(E)::QAR1(C)
    • Q(b);N_GUARD::QAR1(C)
    • Q(b);N_GUARD,P_PINB(D)::QAR1(C)
  • Actual
    • R(A);
    • Vars
      • Q(b);CHECK,N_GUARD::QAR1(C),XQ(b)
      • K(a);P-FLIGHT::QAB1(C)
      • K(a);P-FLIGHT,P_SPINQ(b)::QAR2(C)
      • Q(b);N_GUARD,XR(A)::QAR1(C)
      • Q(b);::B(D)
      • Q(b);N_GUARD::QAR1(C)
      • Q(b);N_GUARD,P_PINB(D)::QAR1(C)
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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).