MESON Chess Problem Database

Problem Display
PID: 42436 (2R1RN1K/3N1p2/1p1k4/2pnp2Q/1p2pr2/4p3/8/b1r5 w - - 0 1)

Buchwald, Julius

Recomm., BCF 033. Ty., 1939-1940

2R1RN1K/3N1p2/1p1k4/2pnp2Q/1p2pr2/4p3/8/b1r5

#2

6 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Rc3
      • 2.Qxe5#
    • 1...Sc3
      • 2.Qxe5#
    • 1...f5
      • 2.Re6#
    • 1...f6
      • 2.Re6#
  • Tries
    • 1.Sb8?
      • threat
        • 2.Rc6#
      • 1...Sc3
        • 2.Qxe5#
      • 1...Sc7
        • 2.Rcd8#
      • 1...Se7
        • 2.Red8#
      • 1...Sf6!
  • Keys
    • 1.Sxe5!
      • threat
        • 2.Rc6#
      • 1...Bxe5+
        • 2.Qxe5#
      • 1...Sc3
        • 2.Sc4#
      • 1...Sf6
        • 2.Sxf7#
      • 1...Sc7
        • 2.Rcd8#
      • 1...Se7
        • 2.Red8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 3
  • Sets
    • R(b);S_CUTB(a)::QAB1(A),XP(i)
    • S(h);S_CUTB(a)::QAB1(A),XP(i)
    • P(l);N_GUARD::R1(D)
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • S(h);S_CUTB(a)::QAB1(A),XP(i)
        • S(h);SBLOCK::R(C)
        • S(h);SBLOCK::R(D)
      • Refutation
        • S(h);
  • Actual
    • S(B);P_SPINS(B),XP(i)
    • Threat
      • R1(C)
    • Vars
      • B(a);CHECK,OGATE,XS(B)::QAB1(A),XB(a)
      • S(h);N_PINS(B)::S(B)
      • S(h);N_PINS(B)::S(B),XP(l)
      • S(h);SBLOCK::R(C)
      • S(h);SBLOCK::R(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).