MESON Chess Problem Database

Problem Display
PID: 185969 (2n2Rn1/1b1pk1PN/Q7/2P2pr1/8/1B5r/K3N2b/4R3 w - - 0 1)

Stanley, Cyril (Kipping, Cyril Stanley)

Chess, 1958

2n2Rn1/1b1pk1PN/Q7/2P2pr1/8/1B5r/K3N2b/4R3

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sf6
      • 2.Qxf6#
    • 1...Sh6
      • 2.Qf6#
    • 1...d6
      • 2.Qxb7#
  • Tries
    • 1.Sc3+?
      • 1...Be5
        • 2.Rxe5#
      • 1...Be4
        • 2.Sd5#
      • 1...Re3!
    • 1.Sf4+?
      • 1...Be4
        • 2.Sd5#
      • 1...Re3!
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sxg8#
        • 2.Re8#
      • 1...Rxb3
        • 2.Sxg8#
      • 1...Rxg7
        • 2.Re8#
      • 1...Bxa6
        • 2.Sxg8#
      • 1...Sxf6
        • 2.Qxf6#
      • 1...Rh8
        • 2.Re8#
      • 1...Bd6
        • 2.Sxg8#
      • 1...Bd5
        • 2.Sxd5#
      • 1...Bc6
        • 2.Sxg8#
      • 1...Sb6
        • 2.Sxg8#
      • 1...Sd6
        • 2.Sxg8#
      • 1...Sh6
        • 2.Re8#
      • 1...d5
        • 2.Sg3#
      • 1...d6
        • 2.Qxb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • S(i);N_GUARD::QAB1(F),XS(i)
    • S(i);N_GUARD::QAB1(F)
    • P(f);OGATEB::QAR(F),XB(e)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::R(A),XB(a)
        • B(e);P_SPINB(e)::S(C)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • S(C);CHECK
      • Vars
        • B(e);P_SPINB(e)::S(C)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • S(H);
    • Threat
      • DUALS(2)
    • Vars
      • R(b);XB(D)::S(H),XS(i)
      • R(d);XP(G)::R1(I)
      • B(e);XQ(F)::S(H),XS(i)
      • S(i);OGATE,XS(H)::QAB1(F),XS(i)
      • R(b);::R1(I)
      • B(a);::S(H),XS(i)
      • B(e);N_GUARD,P_PINB(D)::S(H),XB(e)
      • B(e);::S(H),XS(i)
      • S(h);::S(H),XS(i)
      • S(i);::R1(I)
      • P(f);S_CUTB(e)::R(A)+S(C)
      • P(f);OGATEB::QAR(F),XB(e)
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).