MESON Chess Problem Database

Problem Display
PID: 243901 (2R5/2n2p2/3NNBp1/4n1P1/KP1P4/2k2p1R/2p5/2Q5 w - - 0 1)

Fleck, Ferenc

Parallele 50, 1949

2R5/2n2p2/3NNBp1/4n1P1/KP1P4/2k2p1R/2p5/2Q5

#2

10 + 7

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sc6
      • 2.Rxf3#
    • 1...Sd7
      • 2.Rxf3#
  • Tries
    • 1.Rxf3+?
      • 1...Sd3
        • 2.Rxc7#
        • 2.d5#
      • 1...Sxf3!
    • 1.Rxc7+?
      • 1...Sc4
        • 2.Rxf3#
      • 1...Sc6
        • 2.Rxf3#
      • 1...Kd3!
    • 1.Qe3+?
      • 1...Sd3
        • 2.d5#
      • 1...Kb2!
  • Keys
    • 1.Sf4!
      • 1...Kxd4
        • 2.Qd2#
      • 1...Sd3
        • 2.Sd5#
      • 1...Sc4
        • 2.Se4#
      • 1...Sg4
        • 2.Rxc7#
      • 1...Sc6
        • 2.Rxf3#
      • 1...Sd7
        • 2.Rxf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,N_SPINS(f)::R(B),XP(c)
    • S(d);N_GUARD::R(B),XP(c)
  • Tries
    • Try
      • R(B);CHECK,XP(c)
      • Refutation
        • S(d);XR(B)
    • Try
      • R(J);CHECK,XS(f)
      • Vars
        • S(d);P_SPINS(d)::R(B),XP(c)
      • Refutation
        • K(b);N_SPINP(a),P-FLIGHT,P_SPINP(c)
    • Try
      • Q(A);CHECK,N_PINP(a)
      • Vars
        • S(d);N_SPINS(f),P_SPINS(d)::B(I)+P(E)
      • Refutation
        • K(b);N_SPINS(f),S_FLIGHT
  • Actual
    • S(H);
    • Vars
      • K(b);N_SPINP(a),N_SPINS(f),P_SPINS(d),S_FLIGHT,XP(E)::QAR2(A)
      • S(d);SBLOCK::S(H)
      • S(d);N_SPINS(f),SBLOCK::S(G)
      • S(d);N_GUARD::R(J),XS(f)
      • S(d);N_GUARD,N_SPINS(f)::R(B),XP(c)
      • S(d);N_GUARD::R(B),XP(c)
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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).