MESON Chess Problem Database

Problem Display
PID: 198861 (b7/2rR2p1/8/3P2Q1/qp1kN3/3B4/1P2P1K1/8 w - - 0 1)

Jakab, Arpad

Bekes, 1921

b7/2rR2p1/8/3P2Q1/qp1kN3/3B4/1P2P1K1/8

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.dxc6#
    • 1...Bxd5
      • 2.Rxd5#
  • Tries
    • 1.Qf6+?
      • 1...Ke3
        • 2.Qf2#
      • 1...gxf6!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Se6#
      • 1...Bxd5+
        • 2.Rxd5#
      • 1...Kxc5
        • 2.Qe3#
      • 1...Qxd7
        • 2.Sb3#
      • 1...Rxc5
        • 2.Qf4#
      • 1...Qc6
        • 2.Sb3#
      • 1...Qa6
        • 2.Sb3#
      • 1...Rc6
        • 2.dxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • R(d);OGATE::R(H)+P(F),XR(d)
    • B(f);OGATE,P_PINS(E),P_SPINB(f),XP(F)::R1(H),XB(f)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • P(e);XQ(G)
  • Actual
    • S(E);P_SPINP(F)
    • Threat
      • S(E)
    • Vars
      • B(f);CHECK,OGATE,P_SPINB(f),XP(F)::R1(H),XB(f)
      • K(c);S_FLIGHT,XS(E)::QAB(G)
      • Q(a);N_GUARD,XR(H)::S(E)
      • R(d);SBLOCK,XS(E)::QAR2(G)
      • Q(a);N_GUARD::S(E)
      • R(d);N_PINP(F)::R(H)+P(F),XR(d)
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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).