MESON Chess Problem Database

Problem Display
PID: 139860 (4N3/8/P2B2Pp/P2k2bR/8/3N4/1PR2P2/1Q1K1B2 w - - 0 1)

Visser, C

Match: Netherlands - Poland, 1937

4N3/8/P2B2Pp/P2k2bR/8/3N4/1PR2P2/1Q1K1B2

#2

13 + 3

102 Probleemblad 1974

SOLUTION

  • SOUND
  • Tries
    • 1.Sb4+?
      • 1...Kd4
        • 2.Rc4#
      • 1...Ke6
        • 2.Bh3#
      • 1...Ke4!
    • 1.Sf4+?
      • 1...Kd4
        • 2.Rd2#
        • 2.Rc4#
      • 1...Ke4!
    • 1.Qa2+?
      • 1...Kd4
        • 2.Qc4#
      • 1...Ke4!
  • Keys
    • 1.Rd2!
      • 1...Kc4
        • 2.Sc1#
      • 1...Kd4
        • 2.Sf4#
      • 1...Ke4
        • 2.Se1#
      • 1...Kc6
        • 2.Se5#
      • 1...Ke6
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(G);CHECK
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::R1(E)
        • K(a);N_SPINB(b),S_FLIGHT::B(C)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • S(G);CHECK
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR1(A)
      • Refutation
        • K(a);N_SPINB(b),S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(a);N_SPINB(b),S_FLIGHT::B(C)+S(G)
      • K(a);N_SPINB(b),P-FLIGHT::R(E)+S(G)
      • K(a);N_SPINB(b),S_FLIGHT::QAB(A)+S(G)
      • K(a);N_SPINB(b),S_FLIGHT::S(G)
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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).