MESON Chess Problem Database

Problem Display
PID: 257532 (8/6Q1/2K1N3/8/1pk1p2P/2p5/7R/8 w - - 0 1)

Juricek, Stanislav

Astafyeva-30 JT (Kudesnik), 2021

8/6Q1/2K1N3/8/1pk1p2P/2p5/7R/8

#2

5 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kd3
      • 2.Qd4#
    • 1...b3
      • 2.Qd4#
  • Tries
    • 1.Sc5?
      • 1...c2
        • 2.Rxc2#
      • 1...e3
        • 2.Qg4#
      • 1...b3!
    • 1.Rb2?
      • threat
        • 2.Qd4#
      • 1...Kd3
        • 2.Qd4#
      • 1...cxb2!
  • Keys
    • 1.Qg2!
      • 1...Kb3
        • 2.Qa2#
      • 1...Kd3
        • 2.Qe2#
      • 1...c2
        • 2.Qxc2#
      • 1...b3
        • 2.Qxe4#
      • 1...e3
        • 2.Qd5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_GUARD,S_FLIGHT::QAR1(E)
    • P(b);SBLOCK::QAR1(E)
  • Tries
    • Try
      • S(D);
      • Vars
        • P(a);OGATEB::R(A),XP(a)
        • P(d);OGATEB::QAR(E)
      • Refutation
        • P(b);
    • Try
      • R(A);
      • Threat
        • QAR1(E)
      • Vars
        • K(c);S_FLIGHT::QAR1(E)
      • Refutation
        • P(a);XR(A)
  • Actual
    • Q(E);
    • Vars
      • K(c);N_GUARD,S_CUTP(b),S_FLIGHT::QAB1(E)
      • K(c);N_GUARD,S_FLIGHT::QAB1(E)
      • P(a);OGATEB::QAR2(E),XP(a)
      • P(b);SBLOCK::QAR2(E),XP(d)
      • P(d);OGATE::QAB1(E)
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).