MESON Chess Problem Database

Problem Display
PID: 62 (bQB2K2/8/2pR1P2/6p1/R3nkP1/q2p1N2/nrP2P2/B3N3 w - - 0 1)

Fleck, Ferenc

3rd Prize, Gazette de Liege, 1930

bQB2K2/8/2pR1P2/6p1/R3nkP1/q2p1N2/nrP2P2/B3N3

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6+
      • 2.Qxd6#
    • 1...Rb1
      • 2.Be5#
    • 1...Rxc2
      • 2.Be5#
    • 1...Rb3
      • 2.Be5#
    • 1...Rb4
      • 2.Be5#
    • 1...Rb6
      • 2.Be5#
    • 1...Rb7
      • 2.Be5#
    • 1...Rxb8
      • 2.Be5#
    • 1...Sb4
      • 2.Rd4#
    • 1...c5
      • 2.Rb6#
  • Tries
    • 1.Sh4?
      • threat
        • 2.Sg6#
      • 1...Qxd6+
        • 2.Qxd6#
      • 1...Ke5
        • 2.Sg6#
      • 1...gxh4!
  • Keys
    • 1.Sd2!
      • threat
        • 2.Rxe4#
      • 1...Qxd6+
        • 2.Qxd6#
      • 1...Ke5
        • 2.Rxe4#
      • 1...Qxa4
        • 2.Sxd3#
      • 1...Qb4
        • 2.Sxd3#
      • 1...Rb4
        • 2.Sg2#
      • 1...Sc3
        • 2.Sxd3#
      • 1...Sb4
        • 2.Rd4#
      • 1...c5
        • 2.Rb6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • Q(c);CHECK,OGATE,P_SPINQ(c),XR(H)::QAB(J),XQ(c)
    • R(b);OGATE::B(A)
    • R(b);OGATE,XP(C)::B(A)
    • R(b);N_PINR(H),N_SPINS(e),OGATE::B(A)
    • R(b);OGATE,P_PINB(K),XQ(J)::B(A)
    • S(a);N_PINR(H),N_SPINS(e)::QAB(J)+R(H)
    • P(h);N_PINR(H)::QAB(J)+R(H)
  • Tries
    • Try
      • S(E);
      • Threat
        • S(E)
      • Vars
        • Q(c);CHECK,OGATE,P_SPINQ(c),XR(H)::QAB(J),XQ(c)
        • K(f);N_SPINS(e),P_SPINR(b),S_FLIGHT::S(E)
      • Refutation
        • P(g);XS(E)
  • Actual
    • S(E);
    • Threat
      • R1(F),XS(e)
    • Vars
      • Q(c);CHECK,OGATE,P_SPINQ(c),XR(H)::QAB(J),XQ(c)
      • K(f);N_SPINS(e),P_SPINR(b),S_FLIGHT::R1(F),XS(e)
      • Q(c);N_GUARD,N_PINR(H),N_SPINS(e),XR(F)::S(B),XP(d)
      • Q(c);N_GUARD,N_SPINS(e)::S(B),XP(d)
      • R(b);N_PINR(H),N_SPINS(e)::S(B)
      • S(a);S_CUTQ(c)::S(B),XP(d)
      • S(a);N_PINR(H),N_SPINS(e)::QAB(J)+R(H)
      • P(h);N_PINR(H)::QAB(J)+R(H)
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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).