MESON Chess Problem Database

Problem Display
PID: 152285 (qn1Nr2n/b1p2b2/p1r2R2/4kpBp/2pp1p2/2P2Q2/2N1P3/3R3K w - - 0 1)

Ellerman, Arnoldo

2nd HM., Good Companions (October), 1915

qn1Nr2n/b1p2b2/p1r2R2/4kpBp/2pp1p2/2P2Q2/2N1P3/3R3K

#2

9 + 15

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.cxd4#
    • 1...Rb6
      • 2.cxd4#
    • 1...Rxf6
      • 2.Bxf4#
    • 1...Sg6
      • 2.Sxf7#
    • 1...dxc3
      • 2.Qxf4#
  • Tries
    • 1.e4?
      • threat
        • 2.Qxf4#
      • 1...fxe4 ep
        • 2.Qxf5#
      • 1...Sg6
        • 2.Sxf7#
      • 1...fxe4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qxf4#
      • 1...Rxf6
        • 2.Bxf4#
      • 1...fxe3
        • 2.Qxf5#
      • 1...Rce6
        • 2.Sxc4#
      • 1...Rc5
        • 2.cxd4#
      • 1...Rb6
        • 2.cxd4#
      • 1...Rd6
        • 2.Rxf5#
      • 1...Bd5
        • 2.Qxd5#
      • 1...Sg6
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(h);P_PINQ(F),S_CUTB(i)::P(E),XP(b)
    • R(h);P_PINQ(F),SBLOCK,XR(H)::B(G),XP(c)
    • S(o);N_GUARD::S(I),XB(k)
    • P(b);XP(E)::QAB1(F),XP(c)
  • Tries
    • Try
      • P(D);
      • Threat
        • QAB1(F),XP(c)
      • Vars
        • P(c);EP,OGATE,XP(D)::QAR1(F),XP(e)
        • S(o);N_GUARD::S(I),XB(k)
      • Refutation
        • P(e);XP(D)
  • Actual
    • S(C);
    • Threat
      • QAB1(F),XP(c)
    • Vars
      • R(h);P_PINQ(F),SBLOCK,XR(H)::B(G),XP(c)
      • P(c);OGATE,XS(C)::QAR1(F),XP(e)
      • R(h);N_GUARD,P_PINQ(F),S_CUTB(k)::S(C),XP(a)
      • R(h);P_PINQ(F),S_CUTB(i)::P(E),XP(b)
      • R(h);P_PINQ(F),SBLOCK::R1(H),XP(e)
      • B(k);N_GUARD,P_PINQ(F)::QAR1(F),XB(k)
      • S(o);N_GUARD::S(I),XB(k)
HTML5 logo

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).