MESON Chess Problem Database

Problem Display
PID: 229019 (4nrb1/6Rn/Q3p2P/2K1k1rp/2PpN1BB/1P1PNpP1/5P2/4R1q1 w - - 0 1)

Somma, Francesco

El Ajedrez Argentino, 1926

4nrb1/6Rn/Q3p2P/2K1k1rp/2PpN1BB/1P1PNpP1/5P2/4R1q1

#2

14 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rf7
      • 2.Qxe6#
    • 1...Shf6
      • 2.Rxg5#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sef6
      • 2.Qd6#
    • 1...Sc7
      • 2.Qd6#
    • 1...Sxg7
      • 2.Qd6#
    • 1...dxe3
      • 2.Qa1#
  • Keys
    • 1.Sf6!
      • threat
        • 2.Sd7#
      • 1...Kxf6+
        • 2.Sd5#
      • 1...Qxg3
        • 2.Sed5#
      • 1...Rxg7
        • 2.Sf1#
      • 1...Rxf6
        • 2.Sf1#
      • 1...Shxf6
        • 2.Rxg5#
      • 1...Sexf6
        • 2.Qd6#
      • 1...Rf7
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(j);S_CUTB(k)::QAR1(L),XP(g)
    • S(h);N_GUARD,S_CUTR(j)::R(N),XR(e)
    • S(i);N_GUARD::QAB1(L),XS(i)
    • S(i);N_GUARD::QAB1(L)
    • S(i);N_GUARD,XR(N)::QAB1(L)
    • P(c);OGATEB,XS(E)::QAB(L)
  • Actual
    • S(H);
    • Threat
      • S(H)
    • Vars
      • K(d);CHECK,P_SPINP(g),P_SPINR(e),S_FLIGHT,XS(H)::S(E)
      • Q(a);N_GUARD,XP(F)::R(A)+S(E)
      • R(e);XR(N)::R(A)+S(E)
      • R(j);SBLOCK,XS(H)::R(A)+S(E)
      • S(h);N_GUARD,SBLOCK,XS(H)::R(N),XR(e)
      • S(i);N_GUARD,SBLOCK,XS(H)::QAB1(L)
      • R(j);S_CUTB(k)::QAR1(L),XP(g)
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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).