MESON Chess Problem Database

Problem Display
PID: 172113 (7B/5p1R/1Kp4p/1p2p3/3k4/1rN5/QNrP1P2/nBR5 w - - 0 1)

Apro, Laszlo

Probleemblad, 1958

7B/5p1R/1Kp4p/1p2p3/3k4/1rN5/QNrP1P2/nBR5

#2

10 + 9

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...f5
      • 2.Rd7#
    • 1...f6
      • 2.Rd7#
  • Tries
    • 1.Rxh6?
      • threat
        • 2.Rh4#
        • 2.Rd6#
      • 1...Rcxb2
        • 2.Rh4#
      • 1...Rcxc3
        • 2.Rd6#
      • 1...Rbxb2
        • 2.Rd6#
      • 1...Rbxc3
        • 2.Rh4#
      • 1...f5
        • 2.Rd6#
      • 1...f6!
    • 1.Qxb3?
      • threat
        • 2.Qb4#
      • 1...Rxb2
        • 2.Se2#
      • 1...Rxc3
        • 2.dxc3#
      • 1...b4
        • 2.Qc4#
        • 2.Qxb4#
      • 1...c5
        • 2.Qd5#
      • 1...Sxb3!
  • Keys
    • 1.Rxf7!
      • threat
        • 2.Rf4#
        • 2.Rd7#
      • 1...Rcxb2
        • 2.Rf4#
      • 1...Rcxc3
        • 2.Rd7#
      • 1...Rbxb2
        • 2.Rd7#
      • 1...Rbxc3
        • 2.Rf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(i);OGATE::R(I)
    • P(i);N_SPINP(f),OGATE::R(I)
  • Tries
    • Try
      • R(I);XP(h)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XS(D)::R(I)
        • R(b);XS(G)::R(I)
        • R(c);XS(D)::R(I)
        • R(c);XS(G)::R(I)
        • P(i);::R(I)
      • Refutation
        • P(i);N_SPINP(f)
    • Try
      • Q(C);XR(c)
      • Threat
        • QAR2(C)
      • Vars
        • R(b);XS(D)::S(G)
        • R(b);OGATE,XS(G)::P(E),XR(b)
        • P(g);N_GUARD::QAR1(C)
      • Refutation
        • S(a);XQ(C)
  • Actual
    • R(I);XP(i)
    • Threat
      • DUALS(2)
    • Vars
      • R(b);XS(D)::R(I)
      • R(b);XS(G)::R(I)
      • R(c);XS(D)::R(I)
      • R(c);XS(G)::R(I)
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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).