MESON Chess Problem Database

Problem Display
PID: 141079 (3KN3/3N4/5p2/1P1k1r2/4n2R/1R1pB1nB/P7/3Q1br1 w - - 0 1)

ten Cate, Pieter

Probleemblad, 1976

3KN3/3N4/5p2/1P1k1r2/4n2R/1R1pB1nB/P7/3Q1br1

#2

10 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Sb6#
    • 1...Re5
      • 2.Sb6#
    • 1...Sd6
      • 2.Sc7#
  • Tries
    • 1.Sc7+?
      • 1...Kc4
        • 2.Sb6#
        • 2.Qc1#
      • 1...Kd6!
    • 1.Rxd3+?
      • 1...Kc4
        • 2.Qb3#
      • 1...Ke6
        • 2.Qb3#
      • 1...Bxd3!
    • 1.Qc1?
      • threat
        • 2.Qc6#
      • 1...Ke6
        • 2.Qc4#
      • 1...Sc5
        • 2.Qc4#
      • 1...Sd6
        • 2.Sc7#
      • 1...Sc3!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qg8#
      • 1...Kc4
        • 2.Sb6#
      • 1...Ke6
        • 2.Qg8#
      • 1...Re5
        • 2.Sb6#
      • 1...Rg5
        • 2.Qe6#
      • 1...Sh1
        • 2.Qxe4#
      • 1...Se2
        • 2.Qxe4#
      • 1...Sh5
        • 2.Qxe4#
      • 1...Sc5
        • 2.Qc4#
      • 1...Sg5
        • 2.Qc4#
      • 1...Sd6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(f);N_SPINP(c),P_SPINS(e),S_FLIGHT::S(H)
    • R(g);SBLOCK::S(H)
    • S(e);SBLOCK::S(J)
  • Tries
    • Try
      • S(J);CHECK
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • R(C);CHECK,XP(c)
      • Vars
        • K(f);P_SPINS(e),S_FLIGHT::QAB1(A)
        • K(f);P_SPINR(g),S_FLIGHT::QAB(A)
      • Refutation
        • B(a);P_SPINB(a),XR(C)
    • Try
      • Q(A);N_PINP(c)
      • Threat
        • QAB1(A)
      • Vars
        • K(f);P_SPINR(g),S_FLIGHT::QAB(A)
        • S(e);::QAB1(A)
        • S(e);SBLOCK::S(J)
      • Refutation
        • S(e);
  • Actual
    • Q(A);N_PINP(c)
    • Threat
      • QAB(A)
    • Vars
      • K(f);P_SPINS(e),S_FLIGHT::S(H)
      • K(f);P_SPINR(g),S_FLIGHT::QAB(A)
      • R(g);SBLOCK::S(H)
      • R(g);OGATE::QAB1(A)
      • S(d);N_GUARD::QAB1(A),XS(e)
      • S(e);OGATE::QAB1(A)
      • S(e);SBLOCK::S(J)
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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).