MESON Chess Problem Database

Problem Display
PID: 172368 (3n4/8/1R1p1R2/3k4/6Q1/8/5K2/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Bankovskaya gazeta, 1997

3n4/8/1R1p1R2/3k4/6Q1/8/5K2/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Rb5#
    • 1...Se6
      • 2.Rf5#
  • Tries
    • 1.Rbxd6+?
      • 1...Ke5
        • 2.Qe2#
        • 2.Qf5#
        • 2.Qd4#
        • 2.Qf4#
      • 1...Kc5!
    • 1.Rfxd6+?
      • 1...Kc5
        • 2.Qb4#
        • 2.Qd4#
      • 1...Ke5!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Qd4#
      • 1...Kc5
        • 2.Qd4#
      • 1...Ke5
        • 2.Qf5#
        • 2.Qd4#
        • 2.Qg5#
      • 1...Sc6
        • 2.Rb5#
      • 1...Se6
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::R(C)
    • S(c);SBLOCK::R(D)
  • Tries
    • Try
      • R(C);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • R(D);CHECK,XP(b)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(B)
    • Vars
      • K(a);P-FLIGHT::QAB1(B)
      • S(c);SBLOCK::R(C)
      • S(c);SBLOCK::R(D)
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).