MESON Chess Problem Database

Problem Display
PID: 11108 (8/KN5b/pR6/8/k1p1Q2r/4n3/PPp5/3r1nbq w - - 0 1)

Mansfield, Comins

1st Prize, Olympic Ty., 1936

8/KN5b/pR6/8/k1p1Q2r/4n3/PPp5/3r1nbq

#2

6 + 11

78 Bulletin Ouvrier des Echecs 1938
3098 FIDE Album (1914-1944) (I) 1971
3550 Complete Mansfield/II 1997
1184 Correspondence Chess 2000
4901 Best Problems 2006
133 The Problemist Supplement 2007
136 Problem Observer 2010

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Qc6#
    • 1...Qh3
      • 2.Qc6#
    • 1...Sg2
      • 2.Qc6#
    • 1...Sg4
      • 2.Qxc4#
    • 1...Sd5
      • 2.Qe8#
    • 1...Sf5
      • 2.Qxc2#
    • 1...a5
      • 2.Sc5#
  • Tries
    • 1.Qe8+?
      • 1...Qc6
        • 2.Qxc6#
      • 1...Rd7!
  • Keys
    • 1.a3!
      • threat
        • 2.Rb4#
      • 1...Sg2
        • 2.Qc6#
      • 1...Sg4
        • 2.Qxc4#
      • 1...Sd5
        • 2.Qe8#
      • 1...Sf5
        • 2.Qxc2#
      • 1...a5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • Q(d);N_GUARD,SBLOCK::QAB(C)
    • S(f);P_PINR(D),S_CUTQ(d)::QAB(C)
    • S(f);N_GUARD,P_PINR(D),S_CUTR(i)::QAR2(C),XP(h)
    • S(f);P_PINR(D),S_CUTQ(d),S_CUTR(a)::QAB(C)
    • S(f);N_GUARD,P_PINR(D),S_CUTB(k)::QAB(C),XP(e)
    • P(j);SBLOCK::S(F)
  • Tries
    • Try
      • Q(C);CHECK,N_PINP(h)
      • Vars
        • Q(d);N_GUARD,P_SPINQ(d)::QAB(C),XQ(d)
      • Refutation
        • R(a);P_PINS(F),P_SPINR(a)
  • Actual
    • P(A);
    • Threat
      • R1(D)
    • Vars
      • S(f);P_PINR(D),S_CUTQ(d)::QAB(C)
      • S(f);N_GUARD,P_PINR(D),S_CUTR(i)::QAR2(C),XP(h)
      • S(f);P_PINR(D),S_CUTQ(d),S_CUTR(a)::QAB(C)
      • S(f);N_GUARD,P_PINR(D),S_CUTB(k)::QAB(C),XP(e)
      • P(j);SBLOCK::S(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).