MESON Chess Problem Database

Problem Display
PID: 194894 (1B6/1KP2rn1/2R1Np2/4kPp1/2P1p1P1/2b1P1p1/4n3/2Q3r1 w - - 0 1)

Gomez, A

Machado, Antonio Gomes

L'Italia Scacchistica, 1918

1B6/1KP2rn1/2R1Np2/4kPp1/2P1p1P1/2b1P1p1/4n3/2Q3r1

#2

10 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc7+
      • 2.Bxc7#
    • 1...Rf8
      • 2.c8Q#
      • 2.c8S#
      • 2.c8B#
      • 2.c8R#
    • 1...Sf4
      • 2.Qxc3#
    • 1...Sxe6
      • 2.Rxe6#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sg6#
      • 1...Rxc7+
        • 2.Bxc7#
      • 1...Sxf4
        • 2.Qxc3#
      • 1...gxf4!
    • 1.Qxc3+?
      • 1...Sd4
        • 2.Qxd4#
        • 2.exd4#
      • 1...Sxc3!
  • Keys
    • 1.Sf8!
      • threat
        • 2.Sg6#
      • 1...Rxc7+
        • 2.Bxc7#
      • 1...Rxf8
        • 2.c8Q#
        • 2.c8S#
        • 2.c8B#
        • 2.c8R#
      • 1...Sf4
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(i);CHECK,OGATE,P_SPINR(i),XP(I)::B(J),XR(i)
    • S(b);N_GUARD::QAB(A),XB(c)
    • S(j);OGATE,XS(G)::R1(F),XS(j)
  • Tries
    • Try
      • S(G);
      • Threat
        • S(G)
      • Vars
        • R(i);CHECK,OGATE,P_SPINR(i),XP(I)::B(J),XR(i)
        • S(b);N_GUARD,XS(G)::QAB(A),XB(c)
      • Refutation
        • P(g);XS(G)
    • Try
      • Q(A);CHECK,XB(c)
      • Refutation
        • S(b);XQ(A)
  • Actual
    • S(G);
    • Threat
      • S(G)
    • Vars
      • R(i);CHECK,OGATE,P_SPINR(i),XP(I)::B(J),XR(i)
      • S(b);N_GUARD::QAB(A),XB(c)
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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).