MESON Chess Problem Database

Problem Display
PID: 212984 (4k3/6b1/4K3/8/8/4Q3/8/8 w - - 0 1)

Krikheli, Iosif Mikhailovich

Sp. Prize, Mat, 1978

4k3/6b1/4K3/8/8/4Q3/8/8

#2

2 + 2

9939 64 Shakhmatnoe obozrenie 2020
3713 Snap 2020
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qg5?
      • threat
        • 2.Qe7#
      • 1...Kf8
        • 2.Qd8#
      • 1...Bf6
        • 2.Qg8#
      • 1...Bf8!
    • 1.Qa7?
      • threat
        • 2.Qb8#
        • 2.Qe7#
        • 2.Qa8#
      • 1...Kd8
        • 2.Qb8#
        • 2.Qd7#
      • 1...Kf8
        • 2.Qb8#
        • 2.Qf7#
        • 2.Qa8#
      • 1...Be5
        • 2.Qe7#
      • 1...Bf8
        • 2.Qb8#
        • 2.Qd7#
        • 2.Qa8#
      • 1...Bf6!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qb8#
      • 1...Kd8
        • 2.Qb8#
      • 1...Kf8
        • 2.Qb8#
      • 1...Bf6
        • 2.Qg8#
      • 1...Be5
        • 2.Qg8#

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

This anticipates 267460(2013)

FEATURES

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