MESON Chess Problem Database

Problem Display
PID: 272812 (3B4/3pP3/3krR1b/NR3pnq/1pPr2pp/3Ppb2/8/2Q1K3 w - - 0 1)

Wrobel, Marian

BCF 001. Ty., 1929-1930

3B4/3pP3/3krR1b/NR3pnq/1pPr2pp/3Ppb2/8/2Q1K3

#2

9 + 13

56 The Problemist 1930

SOLUTION

  • SOUND
  • Sets
    • 1...Re4
      • 2.Rd5#
    • 1...Bf8
      • 2.exf8Q#
      • 2.exf8B#
    • 1...Sf7
      • 2.e8S#
    • 1...b3
      • 2.Qa3#
  • Tries
    • 1.Sb7+?
      • 1...Kc6
        • 2.Rb6#
      • 1...Bxb7!
  • Keys
    • 1.Qxe3!
      • threat
        • 2.Qe5#
      • 1...Re4
        • 2.Rd5#
      • 1...Rd5
        • 2.Rb6#
      • 1...Be4
        • 2.Qf4#
      • 1...Bd5
        • 2.c5#
      • 1...Se4
        • 2.Qxd4#
      • 1...Sf7
        • 2.e8S#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(d);N_GUARD,S_CUTB(b)::R1(F)
    • B(l);OGATE::PXB(l)=Q
    • S(h);S_CUTQ(i)::P=S
    • P(c);OGATEB::QAB(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(j);N_GUARD,P-FLIGHT::R1(F)
      • Refutation
        • B(b);XS(E)
  • Actual
    • Q(A);P_SPINQ(A),XP(a)
    • Threat
      • QAB1(A)
    • Vars
      • R(d);N_GUARD,S_CUTB(b)::R1(F)
      • R(d);S_CUTB(b)::R(F)
      • B(b);N_PINQ(A)::QAB(A)
      • B(b);SBLOCK::P(D)
      • S(h);N_PINQ(A)::QAR2(A),XR(d)
      • S(h);S_CUTQ(i)::P=S
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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).