MESON Chess Problem Database

Problem Display
PID: 268697 (K7/1p5b/3BP3/R2pN3/2pkr1Q1/2p2B2/2p2PN1/3q4 w - - 0 1)

Murashev, Pavel Aleksandrovich

64 Shakhmatnoe obozrenie, 2023

K7/1p5b/3BP3/R2pN3/2pkr1Q1/2p2B2/2p2PN1/3q4

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Rxd5#
    • 1...Rxg4
      • 2.Rxd5#
  • Tries
    • 1.Se3?
      • threat
        • 2.Rxd5#
      • 1...Qa1
        • 2.Sxc2#
      • 1...b5!
    • 1.Qg7?
      • threat
        • 2.Bc5#
      • 1...Rxe5
        • 2.Rxd5#
      • 1...b5
        • 2.Qa7#
      • 1...b6!
  • Keys
    • 1.Sf4!
      • threat
        • 2.Rxd5#
      • 1...Rxe5
        • 2.Bc5#
      • 1...Qa1
        • 2.Se2#
      • 1...b5
        • 2.Sc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • R(f);::R1(E),XP(g)
    • R(f);N_SPINR(f),XQ(D)::R1(E),XP(g)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(E),XP(g)
      • Vars
        • Q(a);N_GUARD,P_PINR(E)::S(B),XP(b)
      • Refutation
        • P(h);
    • Try
      • Q(D);N_PINR(f)
      • Threat
        • B(G)
      • Vars
        • R(f);P_SPINR(f),XS(F)::R1(E),XP(g)
        • P(h);OGATE::QAB(D)
      • Refutation
        • P(h);
  • Actual
    • S(B);N_PINR(f)
    • Threat
      • R1(E),XP(g)
    • Vars
      • R(f);SBLOCK,XS(F)::B(G)
      • Q(a);N_GUARD,P_PINR(E)::S(B)
      • P(h);N_GUARD::S(F)
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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).