MESON Chess Problem Database

Problem Display
PID: 2593 (2R5/7b/3p2n1/1pBkN2B/1p1Np3/1K6/3Q4/8 w - - 0 1)

Perry, William E

Source?, 0000

2R5/7b/3p2n1/1pBkN2B/1p1Np3/1K6/3Q4/8

#2

7 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qg5#
  • Tries
    • 1.Sdc6+?
      • 1...Kxc5
        • 2.Sd7#
        • 2.Qd4#
      • 1...Ke6!
    • 1.Sxg6?
      • threat
        • 2.Qg5#
      • 1...dxc5
        • 2.Rd8#
      • 1...e3
        • 2.Bf3#
        • 2.Qg2#
      • 1...Bxg6!
  • Keys
    • 1.Qg5!
      • threat
        • 2.Sxg6#
      • 1...Sxe5
        • 2.Bf7#
      • 1...dxc5
        • 2.Rd8#
      • 1...dxe5
        • 2.Qd8#
      • 1...e3
        • 2.Bf3#
      • 1...Sf4
        • 2.Sg6#
      • 1...Sh4
        • 2.Bf7#
      • 1...Se7
        • 2.Bf7#
      • 1...Sf8
        • 2.Sg6#
      • 1...Sh8
        • 2.Sg6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 1
  • Sets
    • K(d);OGATEB,P-FLIGHT,XS(E)::QAR2(A)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • S(E);XS(f)
      • Threat
        • QAR(A)
      • Vars
        • P(e);OGATEB,SBLOCK,XB(D)::R(G)
      • Refutation
        • B(g);XS(E)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)+S(E),XS(f)
    • Vars
      • S(f);OGATE,P_SPINS(f),XS(E)::B(F)
      • P(e);OGATEB,SBLOCK,XB(D)::R(G)
      • P(e);OGATEB,P_SPINP(e),SBLOCK,XS(E)::QAR(A)
      • P(b);OGATEB::B(F)
      • S(f);::QAR(A)+S(E)
      • S(f);OGATE::B(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).