MESON Chess Problem Database

Problem Display
PID: 17170 (3N1Qbb/2n2p2/6p1/4p1R1/1BRp1k1P/1K5P/3PP3/3n3B w - - 0 1)

Olson, Anders Elis Waldemar

Chemnitzer Tageblatt, 1925

3N1Qbb/2n2p2/6p1/4p1R1/1BRp1k1P/1K5P/3PP3/3n3B

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sb2
      • 2.e3#
    • 1...Sf2
      • 2.e3#
    • 1...Sc3
      • 2.e3#
    • 1...Sb5
      • 2.Se6#
    • 1...Sd5
      • 2.Se6#
    • 1...Sa6
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
    • 1...Sa8
      • 2.Se6#
    • 1...Se8
      • 2.Se6#
    • 1...f5
      • 2.Rg4#
  • Tries
    • 1.Rxd4+?
      • 1...e4
        • 2.Rxe4#
      • 1...exd4!
    • 1.Qxf7+?
      • 1...Bf6
        • 2.Qxf6#
      • 1...Bxf7!
  • Keys
    • 1.Bd6!
      • threat
        • 2.Rxd4#
      • 1...Sf2
        • 2.e3#
      • 1...Sc3
        • 2.e3#
      • 1...Sb5
        • 2.Se6#
      • 1...Se6
        • 2.Sxe6#
      • 1...f5
        • 2.Rg4#
      • 1...f6
        • 2.Bxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • S(a);N_GUARD::P(C)
    • S(f);N_GUARD::S(J)
    • S(f);N_GUARD::S(J),XS(f)
    • P(g);P_PINR(G)::R1(I)
  • Tries
    • Try
      • R(G);CHECK,P_PINP(g),XP(b)
      • Vars
        • P(d);N_SPINP(g),P_SPINP(d)::R1(G),XP(d)
      • Refutation
        • P(d);XR(G)
    • Try
      • Q(K);CHECK,XP(g)
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAR2(K),XB(i)
      • Refutation
        • B(h);P_PINR(G),XQ(K)
  • Actual
    • B(F);
    • Threat
      • R(G),XP(b)
    • Vars
      • S(a);N_GUARD::P(C)
      • S(f);N_GUARD::S(J)
      • S(f);N_GUARD::S(J),XS(f)
      • P(g);P_PINR(G)::R1(I)
      • P(g);P_PINR(G),S_CUTB(i)::B(F),XP(d)
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).