MESON Chess Problem Database

Problem Display
PID: 104372 (2b5/3p4/n1P5/3kP2R/1b1N2R1/2pQP2K/8/8 w - - 0 1)

Kubicek, James Lawrence

Northwest Chess, 1977

2b5/3p4/n1P5/3kP2R/1b1N2R1/2pQP2K/8/8

#2

8 + 6

6490 yacpdb 2009
5454 Near Snap 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qb5#
    • 1...Bc5
      • 2.e4#
    • 1...d6
      • 2.e6#
  • Tries
    • 1.Qb5+?
      • 1...Bc5
        • 2.Qb3#
      • 1...Sc5!
  • Keys
    • 1.Rg6!
      • threat
        • 2.Sb3#
      • 1...dxc6+
        • 2.Se6#
      • 1...d6+
        • 2.e6#
      • 1...Kc5
        • 2.Qb5#
      • 1...Bc5
        • 2.e4#
      • 1...Bd6
        • 2.exd6#
      • 1...Sc5
        • 2.Rd6#

Anticipated by 9826(1910)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT::QAR1(A)
    • B(b);SBLOCK::P(B)
    • P(e);P_PINR(E),SBLOCK::R(G)+P(F)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(b);OGATE,P_SPINB(b),SBLOCK::QAB(A)
      • Refutation
        • S(d);P_SPINS(d)
  • Actual
    • R(E);
    • Threat
      • QAR(A)+S(D)
    • Vars
      • P(e);CHECK,SBLOCK,XP(H)::QAR(A)+S(D)
      • P(e);CHECK,SBLOCK::R(G)+P(F)
      • K(c);P-FLIGHT::QAR1(A)
      • B(b);SBLOCK::P(B)
      • B(b);OGATE::R(G)+P(F),XB(b)
      • S(d);SBLOCK,S_CUTB(b)::R1(E)
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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).