MESON Chess Problem Database

Problem Display
PID: 109027 (1Br2N2/2p5/B7/5Q2/3kp3/3q2RK/bP1R4/2nN4 w - - 0 1)

Dittrich, Stefan

Muller, Dieter

Ancin MT, 1978

1Br2N2/2p5/B7/5Q2/3kp3/3q2RK/bP1R4/2nN4

#2

9 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Se6#
    • 1...Be6
      • 2.Sxe6#
    • 1...Sb3
      • 2.Se6#
    • 1...e3
      • 2.Rg4#
    • 1...c5
      • 2.Qe5#
    • 1...c6
      • 2.Qe5#
  • Tries
    • 1.Rdxd3+?
      • 1...exd3
        • 2.Rg4#
      • 1...Sxd3!
  • Keys
    • 1.b4!
      • threat
        • 2.Qc5#
      • 1...Bd5
        • 2.Qf6#
      • 1...Be6
        • 2.Sxe6#
      • 1...Sb3
        • 2.Se6#
      • 1...e3
        • 2.Rg4#
      • 1...c5
        • 2.Qe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(b);N_GUARD::S(I)
    • B(b);N_GUARD,P_PINQ(F)::S(I),XB(b)
    • S(a);S_CUTB(b)::S(I)
    • P(e);N_PINR(D)::R(D)
    • P(f);::QAB1(F)
  • Tries
    • Try
      • R(C);CHECK,N_SPINR(D),XQ(c)
      • Vars
        • P(e);S_CUTS(a),XR(C)::R(D)
      • Refutation
        • S(a);XR(C)
  • Actual
    • P(B);
    • Threat
      • QAB1(F)
    • Vars
      • B(b);SBLOCK::QAB(F)
      • B(b);N_GUARD,P_PINQ(F)::S(I),XB(b)
      • S(a);S_CUTB(b)::S(I)
      • P(e);N_PINR(D)::R(D)
      • P(f);::QAB1(F)
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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).