MESON Chess Problem Database

Problem Display
PID: 241140 (4B3/4p2p/1K2p2P/N2pkp2/3RnR1P/7N/3P2P1/4Q1B1 w - - 0 1)

Fiedler, Frank

Sachsische Zeitung, 1987

4B3/4p2p/1K2p2P/N2pkp2/3RnR1P/7N/3P2P1/4Q1B1

#2

12 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Sc4#
  • Tries
    • 1.Bf2?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.Ba4?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.Bb5?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.Bc6?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.Qe2?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.Qe3?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.d3?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.g3?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
    • 1.h5?
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6!
  • Keys
    • 1.Sf2!
      • 1...Kxd4
        • 2.Qa1#
      • 1...Kxf4
        • 2.Bh2#
      • 1...Kd6
        • 2.Sc4#
      • 1...Kf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
  • Tries
    • Try
      • B(B);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • B(L);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • B(L);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • B(L);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • P(D);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
    • Try
      • P(H);
      • Vars
        • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • Refutation
        • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT
  • Actual
    • S(E);
    • Vars
      • K(c);OGATEB,S_FLIGHT,XR(F)::QAB(A)
      • K(c);OGATEB,S_FLIGHT,XR(G)::B(B)
      • K(c);N_SPINS(a),P_SPINP(b),S_FLIGHT::S(I)
      • K(c);N_SPINS(a),P_SPINP(d),S_FLIGHT::S(E)
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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).