MESON Chess Problem Database

Problem Display
PID: 245997 (8/1B6/5B2/2k5/K5pQ/8/8/8 w - - 0 1)

Pilchenko, Viacheslav Karlovich

Sem Shakhmatnikh not, 2009

8/1B6/5B2/2k5/K5pQ/8/8/8

#2

4 + 2

15148 Sadier Collection 2021
5454 Near Snap 2023

SOLUTION

  • SOUND
  • Sets
    • 1...g3
      • 2.Qb4#
      • 2.Qd4#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qb4#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kd6
        • 2.Qe7#
      • 1...Kb6!
    • 1.Qf2+?
      • 1...Kc4
        • 2.Qd4#
        • 2.Qc2#
      • 1...Kd6!
    • 1.Qg3?
      • threat
        • 2.Qc7#
      • 1...Kc4
        • 2.Qc3#
      • 1...Kb6!
    • 1.Qh1?
      • threat
        • 2.Qc6#
      • 1...Kc4
        • 2.Qd5#
      • 1...Kd6
        • 2.Qc6#
      • 1...Kb6!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qc7#
      • 1...Kc4
        • 2.Qc2#
      • 1...Kb6
        • 2.Bd4#
      • 1...Kd6
        • 2.Qe7#

Anticipated by 244662(1904), 183663(1915), 157601(1983), 157611(1986), 219468(1991), 105387(1992)

This anticipates 232490(2012)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);CHECK
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • K(b);S_FLIGHT::QAR1(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • K(b);P-FLIGHT::QAR2(B)
      • K(b);S_FLIGHT::B(C)
      • K(b);S_FLIGHT::QAB1(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).