MESON Chess Problem Database

Problem Display
PID: 11570 (bQ1qn3/1nb1N1P1/R2p1p1B/p1NrR1r1/p2kp1p1/P2P2K1/2PP4/8 w - - 0 1)

Fleck, Ferenc

1st Prize, Nepszava, 1939

bQ1qn3/1nb1N1P1/R2p1p1B/p1NrR1r1/p2kp1p1/P2P2K1/2PP4/8

#2

12 + 14

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5
      • 2.Rxe4#
    • 1...Rxe5
      • 2.Be3#
    • 1...Rg6
      • 2.Rxd5#
    • 1...Rxg7
      • 2.Rxd5#
    • 1...Sxc5
      • 2.Qb2#
    • 1...dxc5
      • 2.Sc6#
    • 1...dxe5
      • 2.Se6#
    • 1...fxe5
      • 2.Se6#
    • 1...f5
      • 2.Rxd5#
  • Keys
    • 1.g8Q!
      • threat
        • 2.Qxd5#
      • 1...Kxc5
        • 2.Qxd5#
      • 1...Kxe5
        • 2.Qxd5#
      • 1...Rxc5
        • 2.Rxe4#
      • 1...Rdxe5
        • 2.Qc4#
      • 1...Rgxe5
        • 2.Be3#
      • 1...Rxg8
        • 2.Rxd5#
      • 1...Sxc5
        • 2.Qb2#
      • 1...dxc5
        • 2.Sc6#
      • 1...dxe5
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(f);SBLOCK,XS(F)::R1(G),XP(c)
    • R(g);OGATE,SBLOCK,XR(G)::B(I)
    • R(g);N_GUARD::R1(G),XR(f)
    • R(g);N_GUARD,XP(K)::R1(G),XR(f)
    • S(j);OGATE,SBLOCK,XS(F)::QAB(L)
    • P(h);P_PINR(G),SBLOCK,XS(F)::S(J)
    • P(h);SBLOCK,XR(G)::S(F)
    • P(i);SBLOCK,XR(G)::S(F)
    • P(i);S_CUTR(g)::R1(G),XR(f)
  • Actual
    • P(K);
    • Threat
      • QAR1(K),XR(f)
    • Vars
      • K(b);P_SPINR(f),S_FLIGHT,XS(F)::QAR1(K),XR(f)
      • K(b);S_FLIGHT,XR(G)::QAR1(K),XR(f)
      • R(f);SBLOCK,XS(F)::R1(G),XP(c)
      • R(f);OGATE,SBLOCK,XR(G)::QAR1(K)
      • R(g);OGATE,SBLOCK,XR(G)::B(I)
      • R(g);N_GUARD,XQ(K)::R1(G),XR(f)
      • S(j);OGATE,SBLOCK,XS(F)::QAB(L)
      • P(h);P_PINR(G),SBLOCK,XS(F)::S(J)
      • P(h);SBLOCK,XR(G)::S(F)
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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).