MESON Chess Problem Database

Problem Display
PID: 262342 (8/Q2KN3/8/8/4k1p1/6B1/4P3/8 w - - 0 1)

Abramenko, Sergey Petrovich

SuperProblem, 2014

8/Q2KN3/8/8/4k1p1/6B1/4P3/8

#2

5 + 2

6490 yacpdb 2022
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Sf5?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kxf5!
    • 1.Sc6?
      • 1...Kd5
        • 2.Qd4#
      • 1...Kf5!
    • 1.Bh4?
      • 1...Kf4
        • 2.Qd4#
      • 1...Ke5
        • 2.Qe3#
      • 1...g3!
    • 1.Qa6?
      • threat
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kd4!
  • Keys
    • 1.Bf2!
      • threat
        • 2.Qe3#
        • 2.Qd4#
      • 1...Kf4
        • 2.Qe3#
      • 1...Ke5
        • 2.Qd4#

Anticipated by 38982(1972), 125339(1972), 12379(1978)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT,XS(E)
    • Try
      • S(E);
      • Vars
        • K(a);N_GUARD,S_FLIGHT::QAR1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);N_GUARD,P-FLIGHT::QAR2(C)
      • Refutation
        • P(b);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
      • Refutation
        • K(a);P-FLIGHT
  • Actual
    • B(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::QAB1(C)
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).