MESON Chess Problem Database

Problem Display
PID: 271615 (8/8/2p2rn1/2p3Q1/1pR3N1/1K1kP1b1/5pn1/3B1NR1 w - - 0 1)

Funk, Jacob E

The Problemist, 1956

8/8/2p2rn1/2p3Q1/1pR3N1/1K1kP1b1/5pn1/3B1NR1

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Qxf5#
    • 1...Rd6
      • 2.Qf5#
    • 1...Bf4
      • 2.Sxf2#
    • 1...Sxe3
      • 2.Qxe3#
    • 1...Sf4
      • 2.Se5#
  • Tries
    • 1.Rc3+?
      • 1...Ke4
        • 2.Sd2#
        • 2.Sxg3#
        • 2.Sxf6#
      • 1...bxc3!
    • 1.Qxg6+?
      • 1...Rf5
        • 2.Qxf5#
      • 1...Rxg6!
  • Keys
    • 1.e4!
      • threat
        • 2.Qd2#
      • 1...Rf4
        • 2.Qd8#
      • 1...Bf4
        • 2.Sxf2#
      • 1...Se3
        • 2.Qxe3#
      • 1...S2f4
        • 2.Rxg3#
      • 1...S6f4
        • 2.Se5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • R(h);N_GUARD::QAB(H),XR(h)
    • R(h);N_GUARD::QAB(H)
    • B(d);N_GUARD,S_CUTR(h)::S(G),XP(a)
    • S(b);OGATE,XP(E)::QAR1(H),XS(b)
    • S(i);N_GUARD,S_CUTB(d)::S(G)
  • Tries
    • Try
      • R(F);CHECK
      • Refutation
        • P(e);XR(F)
    • Try
      • Q(H);CHECK,XS(i)
      • Vars
        • R(h);N_GUARD,P_SPINR(h)::QAB(H),XR(h)
      • Refutation
        • R(h);XQ(H)
  • Actual
    • P(E);
    • Threat
      • QAR1(H)
    • Vars
      • R(h);OGATE::QAR(H)
      • B(d);N_GUARD,S_CUTR(h)::S(G),XP(a)
      • S(b);N_GUARD::QAR1(H),XS(b)
      • S(b);OGATE::R(C),XB(d)
      • S(i);N_GUARD,S_CUTB(d)::S(G)
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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).