MESON Chess Problem Database

Problem Display
PID: 193914 (2b5/2N5/2P5/R1pBpp2/P2k4/pK1PpP2/1p6/B2Q4 w - - 0 1)

Saska, Istvan

Pesti Naplo, 1916

2b5/2N5/2P5/R1pBpp2/P2k4/pK1PpP2/1p6/B2Q4

#2

10 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...a2
      • 2.Bxb2#
    • 1...c4+
      • 2.dxc4#
  • Tries
    • 1.Bc4?
      • threat
        • 2.Sb5#
      • 1...bxa1S+
        • 2.Qxa1#
      • 1...e2
        • 2.Qg1#
      • 1...Ba6
        • 2.Se6#
      • 1...e4!
  • Keys
    • 1.Be4!
      • threat
        • 2.Sb5#
      • 1...Be6+
        • 2.Sxe6#
      • 1...bxa1S+
        • 2.Qxa1#
      • 1...c4+
        • 2.dxc4#
      • 1...fxe4
        • 2.dxe4#
      • 1...e2
        • 2.Qg1#
      • 1...Ba6
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(b);N_GUARD::B(A),XP(a)
    • P(e);CHECK,OGATE::QAR(B)+P(D),XP(e)
  • Tries
    • Try
      • B(H);
      • Threat
        • S(J)
      • Vars
        • P(a);CHECK,N_SPINP(a),OGATE,XB(A)::QAB(B),XS(a)
        • P(c);OGATEB::QAB(B)
        • B(h);N_GUARD::S(J)
      • Refutation
        • P(f);
  • Actual
    • B(H);
    • Threat
      • S(J)
    • Vars
      • B(h);CHECK,N_GUARD::S(J),XB(h)
      • P(a);CHECK,N_SPINP(a),OGATE,XB(A)::QAB(B),XS(a)
      • P(e);CHECK,OGATE::QAR(B)+P(D),XP(e)
      • P(g);OGATE,XB(H)::QAR(B)+P(D),XP(g)
      • P(c);OGATEB::QAB(B)
      • B(h);N_GUARD::S(J)
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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).