MESON Chess Problem Database

Problem Display
PID: 150070 (3r1n2/5NR1/6N1/4p2k/6p1/8/4B2K/1b3R2 w - - 0 1)

Palkoska, Emil

West Sussex Gazette, 1929

3r1n2/5NR1/6N1/4p2k/6p1/8/4B2K/1b3R2

#2

6 + 6

14868 Pirnie Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Rd3
      • 2.Rf5#
    • 1...Ba2
      • 2.Rf5#
    • 1...Bf5
      • 2.Rxf5#
    • 1...Sxg6
      • 2.Rh7#
    • 1...e4
      • 2.Rf5#
  • Tries
    • 1.Kg3?
      • threat
        • 2.Bxg4#
        • 2.Rh1#
      • 1...Sxg6
        • 2.Bxg4#
        • 2.Rh7#
      • 1...Rd1
        • 2.Bxg4#
      • 1...Rd4
        • 2.Rh1#
      • 1...Be4
        • 2.Bxg4#
      • 1...Bf5
        • 2.Rh1#
        • 2.Rxf5#
      • 1...Rd3+!
    • 1.Sf4+?
      • 1...Kh4
        • 2.Rxg4#
      • 1...exf4!
  • Keys
    • 1.Rf3!
      • threat
        • 2.Rh3#
      • 1...g3+
        • 2.Rxg3#
      • 1...Sxg6
        • 2.Rh7#
      • 1...gxf3
        • 2.Bxf3#
      • 1...Rd3
        • 2.Rf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • R(e);S_CUTB(a)::R(A)
    • B(a);N_GUARD::R(A)
    • B(a);N_GUARD::R(A),XB(a)
    • S(f);N_GUARD,SBLOCK,XS(D)::R(F)
    • P(c);S_CUTB(a)::R(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • R(e);::B(B),XP(b)
        • R(e);::R(A)
        • B(a);::B(B),XP(b)
      • Refutation
        • R(e);CHECK
    • Try
      • S(D);CHECK
      • Vars
        • K(d);N_SPINP(b),P-FLIGHT::R1(F),XP(b)
      • Refutation
        • P(c);XS(D)
  • Actual
    • R(A);N_PINP(b)
    • Threat
      • R(A)
    • Vars
      • P(b);CHECK,OGATEB::B(B)+R(A),XP(b)
      • S(f);N_GUARD,SBLOCK,XS(D)::R(F)
      • P(b);OGATE,P_SPINP(b),XR(A)::B(B),XP(b)
      • R(e);S_CUTB(a)::R(A)
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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).