MESON Chess Problem Database

Problem Display
PID: 10658 (2n5/2Kbn1pN/Q5P1/R2ppk2/7R/3N1p2/8/1B6 w - - 0 1)

Mansfield, Comins

Sunday Citizen, 1966

2n5/2Kbn1pN/Q5P1/R2ppk2/7R/3N1p2/8/1B6

#2

8 + 8

4054 Complete Mansfield/III 1999

SOLUTION

  • SOUND
  • Sets
    • 1...d4
      • 2.Rf4#
      • 2.Rxe5#
    • 1...e4
      • 2.Rf4#
  • Tries
    • 1.Qe6+?
      • 1...Kxe6
        • 2.Sc5#
      • 1...Bxe6!
  • Keys
    • 1.Qc4!
      • threat
        • 2.Qg4#
      • 1...Ke6
        • 2.Sc5#
      • 1...Kxg6
        • 2.Sxe5#
      • 1...dxc4
        • 2.Sf4#
      • 1...e4
        • 2.Qxe4#
      • 1...d4
        • 2.Qf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD,P_SPINP(b)::R1(C)
  • Tries
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);S_FLIGHT,XQ(E)::S(B)
      • Refutation
        • B(e);XQ(E)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(d);P_SPINP(b),S_FLIGHT::S(B)
      • K(d);S_FLIGHT,XP(F)::B(A)+S(B),DCHECK,XP(c)
      • P(b);P_SPINP(c),XQ(E)::B(A)+S(B)
      • P(c);P_SPINP(b)::QAB1(E),XP(c)
      • P(b);OGATE,P_SPINP(c)::QAR2(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).