MESON Chess Problem Database

Problem Display
PID: 213158 (2K3R1/8/2QB1p2/2nP1k2/8/8/2q1P1B1/8 w - - 0 1)

Kashcheev, Niktopolion Pavlovich

Land og Folk, 1971

2K3R1/8/2QB1p2/2nP1k2/8/8/2q1P1B1/8

#2

7 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sb3
      • 2.Qxc2#
    • 1...Sd3
      • 2.e4#
    • 1...Sa4
      • 2.Qxc2#
    • 1...Se4
      • 2.Bh3#
    • 1...Sa6
      • 2.Qxc2#
    • 1...Se6
      • 2.Qxc2#
    • 1...Sb7
      • 2.Qxc2#
    • 1...Sd7
      • 2.Qxc2#
  • Tries
    • 1.e4+?
      • 1...Sxe4
        • 2.Bh3#
      • 1...Qxe4!
  • Keys
    • 1.Qc7!
      • threat
        • 2.Qh7#
      • 1...Sb3
        • 2.Qxc2#
      • 1...Sd3
        • 2.e4#
      • 1...Sa4
        • 2.Qxc2#
      • 1...Se4
        • 2.Bh3#
      • 1...Sa6
        • 2.Qxc2#
      • 1...Se6
        • 2.Qxc2#
      • 1...Sb7
        • 2.Qxc2#
      • 1...Sd7
        • 2.Qxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,P_PINQ(D)::QAB(D),XQ(a)
    • S(b);N_GUARD,P_PINQ(D),S_CUTQ(a)::P(A)
    • S(b);P_PINQ(D),SBLOCK::B(B)
  • Tries
    • Try
      • P(A);CHECK
      • Vars
        • S(b);P_PINQ(D),SBLOCK,XP(A)::B(B)
      • Refutation
        • Q(a);XP(A)
  • Actual
    • Q(D);
    • Threat
      • QAB(D)
    • Vars
      • S(b);OGATE,P_PINQ(D)::QAB(D),XQ(a)
      • S(b);N_GUARD,P_PINQ(D),S_CUTQ(a)::P(A)
      • S(b);P_PINQ(D),SBLOCK::B(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).