MESON Chess Problem Database

Problem Display
PID: 72804 (4NR2/2p4b/4p3/8/1pPpkB2/rQn4R/r4P1K/7N w - - 0 1)

Cieslak, Francizek

Tijdschrift vd KNSB, 1936

4NR2/2p4b/4p3/8/1pPpkB2/rQn4R/r4P1K/7N

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2+
      • 2.Sxf2#
    • 1...Sb1
      • 2.Sg3#
    • 1...Sd1
      • 2.Sg3#
    • 1...Se2
      • 2.f3#
    • 1...Sa4
      • 2.Sg3#
    • 1...Sb5
      • 2.Sg3#
    • 1...Sd5
      • 2.Sg3#
    • 1...c5
      • 2.Sd6#
    • 1...c6
      • 2.Sd6#
  • Tries
    • 1.Qc2+?
      • 1...d3
        • 2.Qxd3#
      • 1...Rxc2!
  • Keys
    • 1.Bxc7!
      • threat
        • 2.Rf4#
      • 1...Rxf2+
        • 2.Sxf2#
      • 1...Bf5
        • 2.Sf6#
      • 1...Se2
        • 2.f3#
      • 1...Sd5
        • 2.Sg3#
      • 1...e5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(a);CHECK,XP(B)::S(A),XR(a)
    • S(c);::S(A)
    • S(c);N_PINP(B)::P(B)
    • P(h);N_GUARD::S(H)
  • Tries
    • Try
      • Q(D);CHECK,N_SPINP(B)
      • Vars
        • P(e);P_SPINP(e)::QAB1(D),XP(e)
      • Refutation
        • R(a);P_PINP(B),XQ(D)
  • Actual
    • B(G);XP(h)
    • Threat
      • R1(I)
    • Vars
      • R(a);CHECK,XP(B)::S(A),XR(a)
      • B(i);SBLOCK::S(H)
      • S(c);N_PINP(B)::P(B)
      • S(c);::S(A)
      • P(g);SBLOCK::S(H)
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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).