MESON Chess Problem Database

Problem Display
PID: 10231 (6Qb/N1R5/n2pp3/3kP3/R7/8/8/4K2b w - - 0 1)

Reeves, Alfred Christopher

3rd HM., Sachove umeni (Ceskoslovensky sach), 1963

6Qb/N1R5/n2pp3/3kP3/R7/8/8/4K2b

#2

6 + 6

3747 FIDE Album (1962-1964) 1968

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qg5#
    • 1...Bxe5
      • 2.Qa8#
    • 1...dxe5
      • 2.Qd8#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qg5#
      • 1...Bxe5
        • 2.Qxh1#
      • 1...dxe5
        • 2.Rd7#
      • 1...Sb4!
    • 1.Qg2+?
      • 1...Kxe5
        • 2.Qg5#
      • 1...Bxg2!
    • 1.Qd8?
      • threat
        • 2.Qxd6#
      • 1...Kxe5
        • 2.Qg5#
      • 1...Bxe5
        • 2.Qa8#
      • 1...Sb4!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qd4#
      • 1...Kxe5
        • 2.Qg5#
      • 1...Bxe5
        • 2.Qc4#
      • 1...dxe5
        • 2.Qd1#
      • 1...Be4
        • 2.Qxe4#
      • 1...Sb4
        • 2.Ra5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(e),OGATEB,P-FLIGHT,XP(C)::QAR2(F)
    • B(f);SBLOCK,XP(C)::QAB(F)
    • P(d);OGATEB,SBLOCK,XP(C)::QAR(F)
  • Tries
    • Try
      • Q(F);N_PINP(e)
      • Threat
        • QAR1(F)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR2(F)
        • B(f);SBLOCK,XP(C)::QAB(F),XB(a)
        • P(d);OGATEB,SBLOCK,XP(C)::R(E)
      • Refutation
        • S(c);
    • Try
      • Q(F);CHECK,N_PINP(e)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XP(C)::QAR2(F)
      • Refutation
        • B(a);XQ(F)
    • Try
      • Q(F);N_PINP(e),P_PINP(d)
      • Threat
        • QAR1(F),XP(d)
      • Vars
        • K(b);N_SPINP(d),OGATEB,P-FLIGHT,XP(C)::QAR2(F)
        • B(f);SBLOCK,XP(C)::QAB(F)
      • Refutation
        • S(c);
  • Actual
    • Q(F);N_PINP(e)
    • Threat
      • QAR1(F)
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(C)::QAR2(F)
      • B(f);SBLOCK,XP(C)::QAB1(F)
      • P(d);SBLOCK,XP(C)::QAR(F)
      • B(a);N_GUARD::QAB1(F),XB(a)
      • S(c);N_GUARD::R(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).