MESON Chess Problem Database

Problem Display
PID: 18185 (n5Q1/3p1n2/2R1r3/KN1kNp2/1p2R3/1P2p3/8/1B6 w - - 0 1)

Mansfield, Comins

US Problem Bulletin, 1963

n5Q1/3p1n2/2R1r3/KN1kNp2/1p2R3/1P2p3/8/1B6

#2

8 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Sc7#
    • 1...Sc7
      • 2.Sxc7#
  • Tries
    • 1.Sxd7?
      • threat
        • 2.Rc5#
      • 1...Rxe4
        • 2.Rd6#
      • 1...Rxc6
        • 2.Re5#
      • 1...Re5
        • 2.Rd6#
      • 1...Kxc6!
  • Keys
    • 1.Sd3!
      • threat
        • 2.Sxb4#
      • 1...Kxe4
        • 2.Qg2#
      • 1...Kxc6
        • 2.Qxa8#
      • 1...Rxe4
        • 2.Rd6#
      • 1...Rxc6
        • 2.Re5#
      • 1...fxe4
        • 2.Rc5#
      • 1...dxc6
        • 2.Rd4#

This is a version of 18050

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • S(h);N_GUARD::S(E)
    • S(h);N_GUARD::S(E),XS(h)
  • Tries
    • Try
      • S(F);XP(f)
      • Threat
        • R1(G)
      • Vars
        • R(e);N_GUARD,P_SPINS(g),XR(C)::R1(G)
        • R(e);N_GUARD,P_SPINS(g),SBLOCK,XR(G)::R1(C)
        • R(e);N_GUARD,P_SPINS(g)::R1(G)
      • Refutation
        • K(c);S_FLIGHT,XR(G)
  • Actual
    • S(F);
    • Threat
      • S(F),XP(b)
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(C)::QAB(H)
      • K(c);OGATEB,S_FLIGHT,XR(G)::QAB(H),XS(h)
      • R(e);N_GUARD,P_SPINS(g),SBLOCK,XR(C)::R1(G)
      • R(e);N_GUARD,P_SPINS(g),SBLOCK,XR(G)::R1(C)
      • P(d);SBLOCK,XR(C)::R1(G)
      • P(f);SBLOCK,XR(G)::R1(C)
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).