MESON Chess Problem Database

Problem Display
PID: 68174 (5B2/2qp4/n3pP2/1P1kp3/1PbpNRN1/8/Q3R3/1Bb2K2 w - - 0 1)

Bakke, Nils Adrian

Hjelle, David

The Problemist, 1974

5B2/2qp4/n3pP2/1P1kp3/1PbpNRN1/8/Q3R3/1Bb2K2

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...d3
      • 2.Sc3#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Be4#
      • 1...Bxa2
        • 2.Bxa2#
      • 1...Bb3
        • 2.Qxb3#
      • 1...d3
        • 2.Qxc4#
      • 1...e4
        • 2.Bxe4#
      • 1...Sxc5!
    • 1.Sd6?
      • threat
        • 2.Be4#
      • 1...Sc5
        • 2.Qxc4#
      • 1...d3
        • 2.Rxe5#
      • 1...e4
        • 2.Bxe4#
      • 1...Sxb4!
    • 1.Se3+?
      • 1...dxe3
        • 2.Sc3#
      • 1...Bxe3!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Be4#
      • 1...Sc5
        • 2.Qxc4#
      • 1...d3
        • 2.Se3#
      • 1...e4
        • 2.Bxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD,N_PINR(D)::S(F)
  • Tries
    • Try
      • S(F);
      • Threat
        • B(A)
      • Vars
        • B(b);N_PINR(D),N_SPINB(b),OGATE,XQ(C)::B(A),XB(b)
        • B(b);N_PINR(D),OGATEB::QAB(C),XB(b)
        • P(c);N_PINR(D)::QAB1(C),XB(b)
        • P(e);::B(A),XP(e)
      • Refutation
        • S(f);XS(F)
    • Try
      • S(F);
      • Threat
        • B(A)
      • Vars
        • S(f);S_CUTQ(h)::QAB1(C),XB(b)
        • P(c);N_PINR(D)::R1(D),XP(e)
        • P(e);::B(A),XP(e)
      • Refutation
        • S(f);XP(E)
    • Try
      • S(H);CHECK
      • Vars
        • P(c);XS(H)::S(F)
      • Refutation
        • B(a);XS(H)
  • Actual
    • S(F);
    • Threat
      • B(A)
    • Vars
      • S(f);S_CUTQ(h)::QAB1(C),XB(b)
      • P(c);N_GUARD,N_PINR(D)::S(H)
      • P(e);::B(A),XP(e)
HTML5 logo

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).