MESON Chess Problem Database

Problem Display
PID: 251669 (K5n1/pQ6/r2pp3/4k2N/2pN4/2n2R2/3R4/1B5b w - - 0 1)

Bikos, Spyros

Jerusalem Post, 1951

(First published on Fri Apr 13 1951)

K5n1/pQ6/r2pp3/4k2N/2pN4/2n2R2/3R4/1B5b

#2

7 + 9

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ra1
      • 2.Sc6#
    • 1...Ra2
      • 2.Sc6#
    • 1...Ra3
      • 2.Sc6#
    • 1...Ra4
      • 2.Sc6#
    • 1...Ra5
      • 2.Sc6#
    • 1...Rc6
      • 2.Sxc6#
    • 1...Bxf3
      • 2.Sxf3#
    • 1...Sd1
      • 2.Qe4#
    • 1...Sa2
      • 2.Qe4#
    • 1...Se2
      • 2.Qe4#
    • 1...Sa4
      • 2.Qe4#
    • 1...Se4
      • 2.Qxe4#
    • 1...Sb5
      • 2.Qe4#
  • Tries
    • 1.Re2+?
      • 1...Sxe2
        • 2.Qe4#
      • 1...Se4
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...Kxd4!
    • 1.Qg7+?
      • 1...Sf6
        • 2.Qg5#
      • 1...Kd5!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxe6#
      • 1...Bxf3+
        • 2.Sxf3#
      • 1...Kd5
        • 2.Rf5#
      • 1...d5
        • 2.Qf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 12
  • Sets
    • R(e);N_GUARD::S(D)
    • R(e);N_GUARD::S(D),XR(e)
    • B(a);P_PINQ(F),XR(C)::S(D),XB(a)
    • S(b);N_GUARD::QAR1(F)
    • S(b);N_GUARD::QAR1(F),XS(b)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • S(b);N_GUARD,XR(B)::QAR1(F)
      • Refutation
        • K(d);S_FLIGHT,XS(D)
    • Try
      • Q(F);CHECK,P_SPINR(C)
      • Vars
        • S(i);P_SPINS(i)::QAR2(F)
      • Refutation
        • K(d);N_PINR(C),P-FLIGHT
  • Actual
    • Q(F);P_SPINR(C)
    • Threat
      • QAR1(F),XP(g)
    • Vars
      • B(a);CHECK,XR(C)::S(D),XB(a)
      • K(d);N_PINR(C),P-FLIGHT,P_SPINP(g)::R(C)
      • P(f);N_PINR(C),SBLOCK::QAB1(F)
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).