MESON Chess Problem Database

Problem Display
PID: 48141 (2Q2n2/8/K1NN3r/2B4r/6Rb/3PPk1P/5p2/3n1B2 w - - 0 1)

Authier, Gabriel

Monreal, Pierre

13th HM., Sao Paulo Ty., 1955-1956

2Q2n2/8/K1NN3r/2B4r/6Rb/3PPk1P/5p2/3n1B2

#2

10 + 7

4872 Themes-64 1957

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Sxe5#
    • 1...Rf5
      • 2.Qxf5#
    • 1...Bg5
      • 2.Se5#
    • 1...Sxe3
      • 2.Sd4#
  • Tries
    • 1.Rg3+?
      • 1...Bxg3
        • 2.Qg4#
      • 1...Kxg3!
  • Keys
    • 1.Sf5!
      • threat
        • 2.Rf4#
      • 1...Rxc6+
        • 2.Qxc6#
      • 1...Rxf5
        • 2.Qxf5#
      • 1...Sxe3
        • 2.Sd4#
      • 1...Bg3
        • 2.Rxg3#
      • 1...Bg5
        • 2.Rg3#
      • 1...Se6
        • 2.Se5#
      • 1...Sg6
        • 2.Scd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(e);N_GUARD::S(H),XR(e)
    • R(e);N_GUARD::QAR2(J),XR(e)
    • B(d);S_CUTR(e)::S(H)
    • S(a);SBLOCK,XP(C)::S(H)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • B(d);XR(E)::QAB1(J)
      • Refutation
        • K(c);P-FLIGHT,XR(E)
  • Actual
    • S(I);P_SPINS(H)
    • Threat
      • R1(E)
    • Vars
      • R(f);CHECK,OGATE,XS(H)::QAB(J),XR(f)
      • R(e);OGATE,XS(I)::QAR2(J),XR(e)
      • S(a);SBLOCK,XP(C)::S(I)
      • B(d);N_GUARD::R1(E),XB(d)
      • B(d);N_GUARD::R1(E)
      • S(g);N_PINS(H)::S(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).