MESON Chess Problem Database

Problem Display
PID: 172476 (8/8/1Q6/1p6/pkp5/7R/K7/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2001

8/8/1Q6/1p6/pkp5/7R/K7/8

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Rh4#
  • Tries
    • 1.Re3?
      • 1...c3
        • 2.Re4#
      • 1...a3!
    • 1.Rf3?
      • 1...c3
        • 2.Rf4#
      • 1...a3!
    • 1.Rg3?
      • 1...c3
        • 2.Rg4#
      • 1...a3!
    • 1.Qe3?
      • 1...a3
        • 2.Qxa3#
      • 1...c3
        • 2.Qxc3#
      • 1...Ka5!
    • 1.Qc7?
      • 1...c3
        • 2.Rh4#
        • 2.Qxc3#
      • 1...a3!
  • Keys
    • 1.Qa7!
      • 1...c3
        • 2.Rh4#
      • 1...a3
        • 2.Qxa3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);OGATEB,SBLOCK::R(B)
  • Tries
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB,SBLOCK::R(B)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB,SBLOCK::R(B)
      • Refutation
        • P(a);
    • Try
      • R(B);
      • Vars
        • P(c);OGATEB,SBLOCK::R(B)
      • Refutation
        • P(a);
    • Try
      • Q(C);N_PINP(d)
      • Vars
        • P(a);::QAB1(C),XP(a)
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);N_PINP(d)
      • Refutation
        • P(a);
  • Actual
    • Q(C);N_PINP(d)
    • Vars
      • P(c);OGATEB,SBLOCK::R(B)
      • P(a);OGATE::QAB1(C),XP(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).