MESON Chess Problem Database

Problem Display
PID: 51332 (K7/8/2N2kpB/R5N1/1p4p1/b3pB2/r7/1r3R2 w - - 0 1)

Ahues, Herbert Siegfried Oskar

Manchester Guardian, 1957

K7/8/2N2kpB/R5N1/1p4p1/b3pB2/r7/1r3R2

#2

7 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Rbb2
      • 2.Be2#
    • 1...Rb3
      • 2.Be2#
    • 1...Ra1
      • 2.Bd1#
    • 1...Bc1
      • 2.Be2#
    • 1...Bb2
      • 2.Bd1#
    • 1...gxf3
      • 2.Rxf3#
  • Tries
    • 1.Se4+?
      • 1...Ke6
        • 2.Bxg4#
      • 1...Kf7!
    • 1.Rf5+?
      • 1...Kxf5
        • 2.Be4#
      • 1...gxf5!
  • Keys
    • 1.Ra7!
      • threat
        • 2.Rf7#
      • 1...Kf5
        • 2.Be4#
        • 2.Rf7#
      • 1...Bc1
        • 2.Be2#
      • 1...Bb2
        • 2.Bd1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(a);N_GUARD::R(A)+B(B)
    • R(b);N_GUARD::R(A)+B(B)
    • B(c);P_PINR(C),S_CUTR(a)::R(A)+B(B)
    • B(c);P_PINR(C),S_CUTR(b)::R(A)+B(B)
    • P(f);OGATE,P_SPINP(f),XB(B)::R(A),XP(f)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(g);P-FLIGHT::B(B),XP(f)
      • Refutation
        • K(g);P-FLIGHT
    • Try
      • R(C);CHECK
      • Vars
        • K(g);P-FLIGHT,XR(C)::R(A)+B(B),DCHECK
      • Refutation
        • P(h);XR(C)
  • Actual
    • R(C);
    • Threat
      • R1(C)
    • Vars
      • B(c);P_PINR(C),S_CUTR(a)::R(A)+B(B)
      • B(c);P_PINR(C),S_CUTR(b)::R(A)+B(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).