MESON Chess Problem Database

Problem Display
PID: 234856 (5RB1/2K1p3/3Pr1p1/8/NPp1kNP1/1Rb1P2p/2b2Q2/6B1 w - - 0 1)

Groeneveld, Cornelis

Source?, 0000

5RB1/2K1p3/3Pr1p1/8/NPp1kNP1/1Rb1P2p/2b2Q2/6B1

#2

12 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sxc3#
    • 1...Be5
      • 2.Sc5#
  • Tries
    • 1.Qg2+?
      • 1...Ke5
        • 2.Qd5#
      • 1...hxg2!
    • 1.Qf3+?
      • 1...Ke5
        • 2.Qd5#
      • 1...Kxf3!
  • Keys
    • 1.Sxg6!
      • threat
        • 2.Qf5#
      • 1...Kd3
        • 2.Sc5#
      • 1...Kd5
        • 2.Sxc3#
      • 1...Re5
        • 2.Qxc2#
      • 1...Rf6
        • 2.Sc5#
      • 1...Be5
        • 2.Qf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK::S(E),XB(b)
    • B(b);P_PINP(I),SBLOCK::S(E)
  • Tries
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • P(c);XQ(B)
    • Try
      • Q(B);CHECK
      • Vars
        • K(e);OGATE,P-FLIGHT::QAR1(B)
      • Refutation
        • K(e);S_FLIGHT,XQ(B)
  • Actual
    • S(G);XP(g)
    • Threat
      • QAB1(B)
    • Vars
      • K(e);P_SPINB(b),S_FLIGHT::S(E)
      • K(e);P_SPINR(f),S_FLIGHT::S(E),XB(b)
      • R(f);::QAB(B),XB(a)
      • R(f);::S(E)
      • B(b);P_PINP(I)::QAB1(B)
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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).