MESON Chess Problem Database

Problem Display
PID: 267641 (1QK2N1B/5pN1/pp5k/1rn2R2/qr6/7b/3p1n2/4b2R w - - 0 1)

Uris, Miguel

BCPS Website, 2022

1QK2N1B/5pN1/pp5k/1rn2R2/qr6/7b/3p1n2/4b2R

#2

7 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rg4
      • 2.Rh5#
    • 1...Sg4
      • 2.Rh5#
  • Tries
    • 1.Rxh3+?
      • 1...Sxh3
        • 2.Rh5#
      • 1...Rh4!
    • 1.Qd6+?
      • 1...f6
        • 2.Qxf6#
      • 1...Se6!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qg5#
      • 1...Rg4
        • 2.Rh5#
      • 1...Sfe4
        • 2.Rxh3#
      • 1...Sg4
        • 2.Rxh3#
        • 2.Rh5#
      • 1...Sce4
        • 2.Qh4#
      • 1...Se6
        • 2.Rf6#
      • 1...f6
        • 2.Qg6#

This is a version of 267640

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(f);N_PINR(B)::R1(B)
    • S(c);N_PINR(B)::R1(B)
  • Tries
    • Try
      • R(A);CHECK,N_SPINR(B),XB(d)
      • Vars
        • S(c);XR(A)::R1(B)
      • Refutation
        • R(f);P_SPINR(f)
    • Try
      • Q(D);CHECK
      • Vars
        • P(l);P_SPINP(l)::QAR2(D),XP(l)
      • Refutation
        • S(h);N_PINR(B),P_SPINS(h)
  • Actual
    • Q(D);
    • Threat
      • QAB1(D)
    • Vars
      • R(f);N_PINR(B)::R1(B)
      • S(c);N_GUARD,S_CUTR(f)::R(A),XB(d)
      • S(h);S_CUTR(f)::QAR2(D)
      • S(h);N_PINR(B)::R(B)
      • P(l);N_GUARD::QAR1(D)
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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).