MESON Chess Problem Database

Problem Display
PID: 187044 (6K1/4PPN1/1p5p/n4Qnr/3k1N2/2R2b2/1P1Pr1q1/8 w - - 0 1)

Overkamp, Petrus

3rd HM., Goteborgsposte, 1952

6K1/4PPN1/1p5p/n4Qnr/3k1N2/2R2b2/1P1Pr1q1/8

#2

9 + 9

133 The Problemist Supplement 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Re3
      • 2.dxe3#
    • 1...Re4
      • 2.Qd5#
    • 1...Re5
      • 2.Qd3#
    • 1...Be4
      • 2.Qf6#
    • 1...Sc4
      • 2.Rd3#
    • 1...Se4
      • 2.Se6#
  • Keys
    • 1.Sg6!
      • threat
        • 2.Qd3#
      • 1...Rxd2
        • 2.Qe5#
      • 1...Re3
        • 2.dxe3#
      • 1...Re4
        • 2.Qd7#
      • 1...Be4
        • 2.Qe5#
      • 1...Sc4
        • 2.Rd3#
      • 1...Se4
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(a);OGATE::P(B),XR(a)
    • R(a);S_CUTB(c)::QAR1(E)
    • R(a);SBLOCK::QAR1(E)
    • B(c);SBLOCK,S_CUTR(a)::QAB(E)
    • S(e);SBLOCK::R1(C)
    • S(f);N_GUARD,P_PINS(H),S_CUTR(a)::S(D)
  • Actual
    • S(D);
    • Threat
      • QAR1(E)
    • Vars
      • R(a);N_GUARD,XP(B)::QAB1(E)
      • R(a);OGATE::P(B),XR(a)
      • R(a);SBLOCK,S_CUTB(c)::QAR(E)
      • B(c);S_CUTR(a)::QAB1(E)
      • S(e);SBLOCK::R1(C)
      • S(f);N_GUARD,S_CUTR(a)::S(H)
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).