MESON Chess Problem Database

Problem Display
PID: 187493 (2RN1B2/4p3/K2pN3/Rppk2n1/3P4/b4P1n/2P1Q3/1b6 w - - 0 1)

Dyachuk, Vasyl Vasilovich

Die Schwalbe, 2018

2RN1B2/4p3/K2pN3/Rppk2n1/3P4/b4P1n/2P1Q3/1b6

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Se4
      • 2.fxe4#
    • 1...c4
      • 2.Qxc4#
  • Tries
    • 1.Kxb5?
      • threat
        • 2.Qc4#
        • 2.c4#
      • 1...Bxc2
        • 2.Qc4#
      • 1...Sxf3
        • 2.Qxf3#
        • 2.c4#
      • 1...Sxe6
        • 2.Qc4#
        • 2.Qe4#
      • 1...cxd4
        • 2.Sc7#
      • 1...c4
        • 2.Qxc4#
      • 1...Ba2!
    • 1.Qd3?
      • threat
        • 2.Sc7#
      • 1...cxd4
        • 2.Qf5#
        • 2.Qxd4#
      • 1...Sxe6!
    • 1.c3?
      • threat
        • 2.Sc7#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...cxd4
        • 2.c4#
      • 1...Bd3!
  • Keys
    • 1.Bg7!
      • threat
        • 2.Sc7#
      • 1...Sxe6
        • 2.Qxe6#
      • 1...cxd4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • S(g);OGATE::P(C),XS(g)
    • P(e);P_SPINP(d)::QAB1(B),XP(e)
  • Tries
    • Try
      • K(F);S_FLIGHT,XP(d)
      • Threat
        • DUALS(2)
      • Vars
        • B(a);XP(A)::QAB1(B)
        • P(e);SBLOCK,XP(D)::S(G)
        • P(e);::QAB1(B),XP(e)
      • Refutation
        • B(a);
    • Try
      • Q(B);
      • Threat
        • S(G)
      • Refutation
        • S(g);XS(G)
    • Try
      • P(A);
      • Threat
        • S(G)
      • Vars
        • S(g);OGATE,XS(G)::QAB1(B),XS(g)
        • P(e);P_SPINP(d),XP(D)::P(A)
      • Refutation
        • B(a);
  • Actual
    • B(J);
    • Threat
      • S(G)
    • Vars
      • S(g);OGATE,XS(G)::QAB1(B),XS(g)
      • P(e);P_SPINP(d),XP(D)::QAB1(B)
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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).