MESON Chess Problem Database

Problem Display
PID: 250417 (8/1BK1Pp2/NP3P2/2PNpQ1p/1P1kP3/r1R3R1/2Pp3r/2n5 w - - 0 1)

Janevski, Zivko

Uralski Problemist, 2009

8/1BK1Pp2/NP3P2/2PNpQ1p/1P1kP3/r1R3R1/2Pp3r/2n5

#2

14 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Rgd3#
    • 1...Se2
      • 2.Rgd3#
    • 1...Sb3
      • 2.Rgd3#
    • 1...Sd3
      • 2.Rgxd3#
  • Tries
    • 1.Kd6?
      • threat
        • 2.Qxe5#
      • 1...Sd3
        • 2.Rgxd3#
      • 1...Rxc3!
    • 1.Sf4?
      • threat
        • 2.Qd7#
      • 1...exf4
        • 2.Qd5#
      • 1...Sd3
        • 2.Rgxd3#
      • 1...Rxc3!
    • 1.Qd7?
      • threat
        • 2.Sf4#
      • 1...Kxe4
        • 2.Rc4#
      • 1...Rxc3
        • 2.Se3#
      • 1...Sd3!
    • 1.Qf2+?
      • 1...Kxe4
        • 2.Rc4#
      • 1...Rxf2!
    • 1.e8Q?
      • threat
        • 2.Qfxe5#
        • 2.Qexe5#
      • 1...Sd3
        • 2.Rgxd3#
      • 1...Rxc3!
    • 1.e8R?
      • threat
        • 2.Qxe5#
      • 1...Sd3
        • 2.Rgxd3#
      • 1...Rxc3!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rc4#
      • 1...Kxc3
        • 2.Qxe5#
      • 1...Rxc3
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
  • Tries
    • Try
      • K(M);S_FLIGHT
      • Threat
        • QAB1(H),XP(f)
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • R(d);XR(B)
    • Try
      • S(G);
      • Threat
        • QAR(H)
      • Vars
        • P(f);OGATE,XS(G)::QAR1(H)
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • R(d);P_PINP(F),XR(B)
    • Try
      • Q(H);
      • Threat
        • QAR(H)+S(G)
      • Vars
        • K(e);N_GUARD,P-FLIGHT,XP(E)::R(B)
        • R(d);P_PINP(F),SBLOCK,XR(B)::QAR(H)+S(G)
      • Refutation
        • S(a);
    • Try
      • Q(H);CHECK
      • Vars
        • K(e);N_GUARD,P-FLIGHT,XP(E)::R(B)
      • Refutation
        • R(c);XQ(H)
    • Try
      • P(N);
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • R(d);P_PINP(F),XR(B)
    • Try
      • P(N);
      • Threat
        • QAB1(H),XP(f)
      • Vars
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • R(d);P_PINP(F),XR(B)
  • Actual
    • S(G);
    • Threat
      • R1(B)
    • Vars
      • K(e);N_GUARD,S_FLIGHT,XR(B)::QAB(H),XP(f)
      • R(d);P_PINP(F),SBLOCK,XR(B)::QAR(H)
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).