MESON Chess Problem Database

Problem Display
PID: 263771 (2B5/1KPn1p2/Q4P2/R1Pk4/3P2R1/8/1B6/n7 w - - 0 1)

van Dijk, Johannes

Tijdschrift vd NSB, 1929

2B5/1KPn1p2/Q4P2/R1Pk4/3P2R1/8/1B6/n7

#2

10 + 4

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc5+
      • 2.Rxc5#
  • Tries
    • 1.Rg5+?
      • 1...Se5
        • 2.Rxe5#
      • 1...Ke4!
    • 1.c6+?
      • 1...Kd6
        • 2.cxd7#
      • 1...Ke6
        • 2.cxd7#
      • 1...Sc5+!
  • Keys
    • 1.Qd3!
      • 1...Sxc5+
        • 2.dxc5#
      • 1...Ke6
        • 2.d5#
      • 1...Sxf6
        • 2.Rg5#
      • 1...Se5
        • 2.dxe5#
      • 1...Sc2
        • 2.Qb3#
      • 1...Sb3
        • 2.Qxb3#
      • 1...Sb6
        • 2.Rg5#
      • 1...Sb8
        • 2.Rg5#
      • 1...Sf8
        • 2.Rg5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • S(c);CHECK,OGATE,P_SPINS(c),XP(E)::R1(D),XS(c)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • S(c);N_GUARD,P_SPINS(c)::R1(C),XS(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(E);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR(F)+P(E),XS(c)
        • K(b);P_SPINS(c),S_FLIGHT::QAR(F)+P(E),XS(c)
      • Refutation
        • S(c);CHECK,P_SPINS(c)
  • Actual
    • Q(F);
    • Vars
      • S(c);CHECK,OGATE,P_SPINS(c),XP(E)::QAR(F)+P(B),XS(c)
      • K(b);OGATE,P_SPINS(c),S_FLIGHT::P(B)
      • S(c);N_GUARD,XP(G)::R(C)
      • S(c);OGATE::QAR(F)+P(B),XS(c)
      • S(a);N_GUARD::QAB(F)
      • S(a);N_GUARD::QAB(F),XS(a)
      • S(c);N_GUARD::R(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).