MESON Chess Problem Database

Problem Display
PID: 101373 (K3b3/3p4/6R1/4pR2/4p1Pk/Q3B1Nr/5npp/7n w - - 0 1)

Sparke, Arthur M

Good Companions, 1919

K3b3/3p4/6R1/4pR2/4p1Pk/Q3B1Nr/5npp/7n

#2

7 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kxg3
      • 2.Bxf2#
    • 1...Rxg3
      • 2.Rh5#
    • 1...Sxg3
      • 2.Qe7#
    • 1...Sxg4
      • 2.Bg5#
  • Tries
    • 1.Bxf2?
      • threat
        • 2.Rh5#
        • 2.Qe7#
      • 1...Rxg3
        • 2.Rh5#
      • 1...Sxf2
        • 2.Rh5#
      • 1...d6
        • 2.Rh5#
      • 1...Bxg6!
    • 1.Bf4?
      • threat
        • 2.Rh5#
        • 2.Qe7#
      • 1...Rxg3
        • 2.Rh5#
      • 1...Sxg3
        • 2.Qe7#
      • 1...Sxg4
        • 2.Bg5#
        • 2.Rh5#
      • 1...exf4
        • 2.Rh5#
      • 1...d6
        • 2.Rh5#
      • 1...Bxg6!
    • 1.Rf8?
      • threat
        • 2.Sf5#
      • 1...Kxg3
        • 2.Bxf2#
      • 1...Rxg3
        • 2.Rh8#
      • 1...Sxg3
        • 2.Qe7#
      • 1...Sxg4
        • 2.Bg5#
      • 1...Bxg6!
  • Keys
    • 1.Rf7!
      • threat
        • 2.Sf5#
      • 1...Kxg3
        • 2.Bxf2#
      • 1...Rxg3
        • 2.Rh7#
      • 1...Sxg3
        • 2.Qe7#
      • 1...Sxg4
        • 2.Bg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(g);OGATEB,S_FLIGHT,XS(C)::QAR(A)+B(B),DCHECK,XS(b)
    • R(e);SBLOCK,XS(C)::R1(E)
    • S(a);SBLOCK,XS(C)::QAB(A)
    • S(b);SBLOCK,XP(D)::B(B)
  • Tries
    • Try
      • B(B);XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • R(e);P_SPINR(e),XS(C)::R1(E)
        • S(a);XB(B)::R1(E)
        • P(i);::R1(E)
      • Refutation
        • B(j);XR(F)
    • Try
      • B(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(e);XS(C)::R1(E)
        • S(a);XS(C)::QAB(A)
        • P(h);XB(B)::R1(E)
        • P(i);::R1(E)
      • Refutation
        • B(j);XR(F)
    • Try
      • R(E);
      • Threat
        • S(C)
      • Vars
        • K(g);OGATEB,S_FLIGHT,XS(C)::QAR(A)+B(B),DCHECK,XS(b)
        • R(e);SBLOCK,XS(C)::R(E)
        • S(a);SBLOCK,XS(C)::QAB(A)
        • S(b);SBLOCK,XP(D)::B(B)
      • Refutation
        • B(j);XR(F)
  • Actual
    • R(E);
    • Threat
      • S(C)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XS(C)::QAR(A)+B(B),DCHECK,XS(b)
      • R(e);SBLOCK,XS(C)::R(E)
      • S(a);SBLOCK,XS(C)::QAB(A)
      • S(b);SBLOCK,XP(D)::B(B)
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).