MESON Chess Problem Database

Problem Display
PID: 120851 (3n1N1Q/6r1/7P/RB2k3/4PR2/2K3P1/3P4/B6b w - - 0 1)

Fleck, Ferenc

Israel Olympic Ty., 1964

3n1N1Q/6r1/7P/RB2k3/4PR2/2K3P1/3P4/B6b

#2

11 + 4

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rf5+?
      • 1...Kxe4
        • 2.Bd3#
      • 1...Kd6!
    • 1.Ra6?
      • threat
        • 2.Kc2#
        • 2.Kb3#
        • 2.Kd3#
        • 2.Kb4#
        • 2.Kc4#
        • 2.Sg6#
        • 2.Sd7#
        • 2.Qxg7#
        • 2.d4#
      • 1...Bxe4
        • 2.Kc4#
      • 1...Se6
        • 2.Sg6#
        • 2.Sd7#
        • 2.Rxe6#
      • 1...Sc6!
  • Keys
    • 1.Rf6!
      • threat
        • 2.Kd3#
      • 1...Rxg3+
        • 2.Bd3#
      • 1...Rc7+
        • 2.Bc6#
      • 1...Kxe4
        • 2.Bd3#
      • 1...Kxf6
        • 2.Qxg7#
      • 1...Bxe4
        • 2.Kc4#
      • 1...Se6
        • 2.Rxe6#
      • 1...Rd7
        • 2.Re6#
      • 1...Sc6
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(F);CHECK
      • Vars
        • K(b);N_SPINR(c),P-FLIGHT,XP(E)::B(H)
      • Refutation
        • K(b);N_SPINR(c),S_FLIGHT
    • Try
      • R(G);
      • Threat
        • DUALS(9)
      • Vars
        • B(a);XP(E)::B(A)+K(C)
      • Refutation
        • S(d);
  • Actual
    • R(F);N_PINR(c)
    • Threat
      • B(A)+K(C)
    • Vars
      • R(c);CHECK,XP(D)::R(G)+B(H)
      • R(c);CHECK::R(G)+B(H)
      • K(b);P-FLIGHT,XP(E)::B(H)
      • K(b);OGATEB,P_SPINR(c),S_FLIGHT,XR(F)::QAB1(K),XR(c)
      • B(a);SBLOCK,XP(E)::B(A)+K(C)
      • S(d);N_GUARD::R1(F),XS(d)
      • R(c);::QAB(K)+R(F),DCHECK
      • S(d);N_GUARD::R1(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).