MESON Chess Problem Database

Problem Display
PID: 45061 (4R3/4B3/4n3/6p1/2Pk1p2/4R3/2KP4/2n2Q2 w - - 0 1)

Jankevics, Karlis

Lukasevics, Janis

Problem Paradise, 2000

4R3/4B3/4n3/6p1/2Pk1p2/4R3/2KP4/2n2Q2

#2

7 + 5

695 Sachsische Zeitung 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qd3#
    • 1...Sb3
      • 2.Qd3#
    • 1...Sd3
      • 2.Qxd3#
    • 1...Sc5
      • 2.Bf6#
    • 1...Sg7
      • 2.Rd8#
    • 1...Sd8
      • 2.Rxd8#
  • Tries
    • 1.Kxc1?
      • threat
        • 2.Qd3#
      • 1...Sc5
        • 2.Bf6#
      • 1...fxe3!
    • 1.Rxe6?
      • threat
        • 2.Rd8#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Se2!
    • 1.Qf3?
      • threat
        • 2.Re4#
        • 2.Qe4#
        • 2.Qd5#
      • 1...fxe3
        • 2.Qd5#
      • 1...Sc7
        • 2.Re4#
        • 2.Qe4#
      • 1...Sc5
        • 2.Qd5#
      • 1...Kxc4!
  • Keys
    • 1.d3!
      • threat
        • 2.Re4#
      • 1...Kxe3
        • 2.Bc5#
      • 1...Sxd3
        • 2.Qxd3#
      • 1...fxe3
        • 2.Qf6#
      • 1...Sc5
        • 2.Bf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::QAR1(A)
    • S(a);N_GUARD::QAR1(A),XS(a)
    • S(e);SBLOCK::B(F)
    • S(e);N_GUARD::R(G)
    • S(e);N_GUARD::R(G),XS(e)
  • Tries
    • Try
      • K(B);P-FLIGHT,XS(a)
      • Threat
        • QAR1(A)
      • Vars
        • S(e);SBLOCK::B(F)
      • Refutation
        • P(c);XR(D)
    • Try
      • R(D);XS(e)
      • Threat
        • R(G)
      • Vars
        • S(a);N_GUARD::QAR1(A),XS(a)
      • Refutation
        • S(a);
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(c);XR(D)::QAR1(A)
        • S(e);::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XP(E)
  • Actual
    • P(C);
    • Threat
      • R1(D)
    • Vars
      • K(b);S_FLIGHT,XR(D)::B(F)
      • S(a);OGATE,XP(C)::QAR1(A),XS(a)
      • P(c);OGATE,SBLOCK,XR(D)::QAB(A)
      • S(e);SBLOCK::B(F)
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).