MESON Chess Problem Database

Problem Display
PID: 263781 (3R3n/2p1kbRP/2P1N3/3p2N1/2pB4/2K5/8/8 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1932

3R3n/2p1kbRP/2P1N3/3p2N1/2pB4/2K5/8/8

#2

8 + 6

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Rxf7#
  • Tries
    • 1.Kb2?
      • 1...Sg6
        • 2.Rxf7#
      • 1...c3+!
    • 1.Kc2?
      • 1...Sg6
        • 2.Rxf7#
      • 1...c3!
    • 1.Kd2?
      • 1...Sg6
        • 2.Rxf7#
      • 1...c3+!
    • 1.Kb4?
      • 1...Sg6
        • 2.Rxf7#
      • 1...c3!
    • 1.Be5?
      • 1...Sg6
        • 2.Rxf7#
      • 1...d4+!
  • Keys
    • 1.Rgg8!
      • threat
        • 2.Rd7#
      • 1...Bxe6
        • 2.Rge8#
      • 1...Bxg8
        • 2.hxg8S#
      • 1...Be8
        • 2.Rgxe8#

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(f);N_GUARD::R1(F),XB(e)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(f);N_GUARD::R1(F),XB(e)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);P-FLIGHT
      • Vars
        • S(f);N_GUARD::R1(F),XB(e)
      • Refutation
        • P(a);
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(f);N_GUARD::R1(F),XB(e)
      • Refutation
        • P(a);CHECK
    • Try
      • K(A);S_FLIGHT
      • Vars
        • S(f);N_GUARD::R1(F),XB(e)
      • Refutation
        • P(a);
    • Try
      • B(B);
      • Vars
        • S(f);N_GUARD::R1(F),XB(e)
      • Refutation
        • P(b);CHECK
  • Actual
    • R(F);N_PINB(e)
    • Threat
      • R1(H)
    • Vars
      • B(e);N_GUARD,XS(E)::R1(F)
      • B(e);OGATE,XR(F)::PXB(e)=S
      • B(e);N_GUARD::R1(F),XB(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).