MESON Chess Problem Database

Problem Display
PID: 81240 (1b3RB1/1p6/1Q2NNR1/1n1Pk3/6P1/1Prp3n/1B1P1p1P/5K2 w - - 0 1)

Janevski, Zivko

The Macedonian Problemist, 2008

1b3RB1/1p6/1Q2NNR1/1n1Pk3/6P1/1Prp3n/1B1P1p1P/5K2

#2

13 + 8

273 Mat Plus 2008

SOLUTION

  • SOUND
  • Sets
    • 1...Bd6
      • 2.Qe3#
    • 1...Sg1
      • 2.Rg5#
    • 1...Sf4
      • 2.Rg5#
    • 1...Sg5
      • 2.Rxg5#
    • 1...Sa3
      • 2.Bxc3#
    • 1...Sd6
      • 2.Bxc3#
      • 2.Qd4#
    • 1...Sa7
      • 2.Bxc3#
    • 1...Sc7
      • 2.Bxc3#
  • Tries
    • 1.Sf4?
      • threat
        • 2.Sxd3#
      • 1...Kxf4
        • 2.Qe3#
      • 1...Sxf4
        • 2.Rg5#
      • 1...Sd4!
    • 1.Sg5?
      • threat
        • 2.Sd7#
      • 1...Kf4
        • 2.Qe3#
      • 1...Sxg5!
    • 1.Sd7+?
      • 1...Kxd5
        • 2.Sg5#
      • 1...Ke4!
    • 1.Bxc3+?
      • 1...Sd4
        • 2.Bxd4#
      • 1...Sxc3!
    • 1.d6?
      • threat
        • 2.Qc5#
      • 1...Bxd6
        • 2.Qe3#
      • 1...Sf4
        • 2.Rg5#
      • 1...Sd4
        • 2.Qxd4#
      • 1...Sc7
        • 2.Bxc3#
        • 2.Qd4#
      • 1...Ba7!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Sxd3#
      • 1...Kd4
        • 2.Scd7#
      • 1...Kf4
        • 2.Sfd7#
      • 1...Sf4
        • 2.Scd7#
      • 1...Sd4
        • 2.Sfd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • B(h);SBLOCK::QAR2(H)
    • S(d);N_GUARD::R(K)
    • S(d);N_GUARD::R(K),XS(d)
    • S(e);N_GUARD::B(B),XR(b)
  • Tries
    • Try
      • S(I);
      • Threat
        • S(I),XP(c)
      • Vars
        • K(f);N_SPINR(b),S_FLIGHT,XS(I)::QAB1(H)
        • S(d);N_GUARD,SBLOCK,XS(I)::R(K)
      • Refutation
        • S(e);N_SPINR(b)
    • Try
      • S(I);
      • Threat
        • S(J)
      • Vars
        • K(f);N_SPINR(b),S_FLIGHT::QAB1(H)
      • Refutation
        • S(d);XS(I)
    • Try
      • S(J);CHECK
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT,XP(G)::B(M)+S(I)
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT
    • Try
      • B(B);CHECK,XR(b)
      • Vars
        • S(e);N_GUARD,P_SPINS(e)::B(B),XS(e)
      • Refutation
        • S(e);XB(B)
    • Try
      • P(G);
      • Threat
        • QAR2(H)
      • Vars
        • B(h);SBLOCK,XP(G)::QAR2(H)
        • S(d);N_GUARD::R(K)
        • S(e);N_GUARD,N_SPINR(b)::QAB1(H),XS(e)
      • Refutation
        • B(h);
  • Actual
    • S(I);
    • Threat
      • S(I),XP(c)
    • Vars
      • K(f);S_FLIGHT::QAB(H)+S(I)
      • K(f);N_SPINR(b),S_FLIGHT::R(L)+S(J)
      • S(d);SBLOCK::S(I)
      • S(e);N_SPINR(b),SBLOCK::S(J)
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).