MESON Chess Problem Database

Problem Display
PID: 11145 (5NK1/8/3pppp1/3kb1nR/2R2q2/1P4rp/2Q1N1n1/4r2B w - - 0 1)

Apro, Laszlo

1st Prize, Western Morning News, 1936

5NK1/8/3pppp1/3kb1nR/2R2q2/1P4rp/2Q1N1n1/4r2B

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc4
      • 2.Qxc4#
    • 1...Sf3
      • 2.Sc3#
    • 1...Se4
      • 2.Rd4#
    • 1...Sf7
      • 2.Sxf4#
    • 1...Sh7
      • 2.Sxf4#
  • Keys
    • 1.Sxg6!
      • threat
        • 2.Se7#
      • 1...Qxc4
        • 2.Qxc4#
      • 1...Ba1
        • 2.Sexf4#
      • 1...Bb2
        • 2.Sexf4#
      • 1...Bc3
        • 2.Sexf4#
      • 1...Bd4
        • 2.Sexf4#
      • 1...Sf3
        • 2.Sc3#
      • 1...Se4
        • 2.Rd4#
      • 1...Sf7
        • 2.Sxf4#
      • 1...Sh7
        • 2.Sxf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(e);OGATE,XR(E)::QAB1(B),XQ(e)
    • S(h);N_SPINS(b),P_SPINB(g),S_CUTR(c)::S(C)
    • S(h);N_SPINS(b),P_SPINB(g),S_CUTQ(e)::R1(E)
    • S(h);P_SPINB(g)::S(C),XQ(e)
  • Actual
    • S(G);XP(l)
    • Threat
      • S(G)
    • Vars
      • Q(e);OGATE,XR(E)::QAB1(B),XQ(e)
      • B(g);N_GUARD::S(C),XQ(e)
      • S(h);N_SPINS(b),P_PINS(G),P_SPINB(g),S_CUTR(c)::S(C)
      • S(h);N_SPINS(b),P_PINS(G),P_SPINB(g),S_CUTQ(e)::R1(E)
      • S(h);P_PINS(G),P_SPINB(g)::S(C),XQ(e)
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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).