MESON Chess Problem Database

Problem Display
PID: 172080 (8/5K2/2p2p2/3k2rR/P3R3/B3pBP1/N1r3pQ/1b6 w - - 0 1)

Apro, Laszlo

Tijdschrift vd KNSB, 1950

8/5K2/2p2p2/3k2rR/P3R3/B3pBP1/N1r3pQ/1b6

#2

9 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Rb2
      • 2.Sc3#
    • 1...Rd2
      • 2.Sc3#
    • 1...Re2
      • 2.Sc3#
    • 1...Rf2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Re5
      • 2.Rf4#
      • 2.Rg4#
      • 2.Reh4#
    • 1...Rf5
      • 2.Rxf5#
  • Tries
    • 1.Rc4+?
      • 1...Ke5
        • 2.g4#
      • 1...Kxc4!
    • 1.Rxg5+?
      • 1...f5
        • 2.Rxf5#
      • 1...fxg5!
    • 1.Qh3?
      • threat
        • 2.Qe6#
        • 2.Qd7#
      • 1...Rf5
        • 2.Rxf5#
        • 2.Qxf5#
      • 1...f5!
  • Keys
    • 1.g4!
      • threat
        • 2.Qd6#
      • 1...c5
        • 2.Rb4#
      • 1...Rc5
        • 2.Sb4#
      • 1...Re5
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(b);N_GUARD::S(A)
    • R(b);N_GUARD::S(A),XR(b)
    • R(f);OGATE::R(H),XR(f)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(e);P-FLIGHT::QAB(B)+P(E)
      • Refutation
        • K(e);N_SPINR(f),S_FLIGHT,XR(G)
    • Try
      • R(H);CHECK,XR(f)
      • Vars
        • P(h);P_SPINP(h)::R(H),XP(h)
      • Refutation
        • P(h);XR(H)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Refutation
        • P(h);N_SPINR(f)
  • Actual
    • P(E);
    • Threat
      • QAR1(B)
    • Vars
      • P(g);SBLOCK::B(D)+R(G)
      • R(b);SBLOCK::S(A)
      • R(f);::B(D)+R(G)
HTML5 logo

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).