MESON Chess Problem Database

Problem Display
PID: 267460 (8/8/8/8/k1K2Q2/8/1b6/8 w - - 0 1)

Zheltukhov, Viktor Ivanovich

Zadachi i Etyudi, 2013

8/8/8/8/k1K2Q2/8/1b6/8

#2

2 + 2

5454 Near Snap 2022
3713 Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Qd2?
      • threat
        • 2.Qb4#
      • 1...Ka3
        • 2.Qa5#
      • 1...Bc3
        • 2.Qa2#
      • 1...Ba3!
    • 1.Qb8?
      • threat
        • 2.Qa7#
        • 2.Qb4#
        • 2.Qa8#
      • 1...Ka3
        • 2.Qa7#
        • 2.Qb3#
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa7#
        • 2.Qb5#
      • 1...Ba3
        • 2.Qa7#
        • 2.Qb5#
        • 2.Qa8#
      • 1...Bd4
        • 2.Qb4#
      • 1...Bc3!
  • Keys
    • 1.Qf2!
      • threat
        • 2.Qa7#
      • 1...Ka3
        • 2.Qa7#
      • 1...Ka5
        • 2.Qa7#
      • 1...Bc3
        • 2.Qa2#
      • 1...Bd4
        • 2.Qa2#

Anticipated by 2879(1899), 95235(1899), 76417(1929), 212984(1978)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);N_GUARD,P-FLIGHT::QAR2(B)
        • B(a);OGATE::QAR2(B)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • DUALS(3)
      • Vars
        • B(a);::QAR1(B)
      • Refutation
        • B(a);
  • Actual
    • Q(B);
    • Threat
      • QAR(B)
    • Vars
      • K(b);P-FLIGHT::QAR(B)
      • K(b);P-FLIGHT::QAR2(B)
      • B(a);OGATE::QAR2(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).