MESON Chess Problem Database

Problem Display
PID: 262823 (1K3B2/1B1p4/R2N1np1/3Pk3/r3P1r1/2P5/2bP1Q2/b3N2q w - - 0 1)

Rimkus, Mecislovas

Szachy, 1979

1K3B2/1B1p4/R2N1np1/3Pk3/r3P1r1/2P5/2bP1Q2/b3N2q

#2

11 + 9

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Sf7#
    • 1...Ra2
      • 2.d4#
    • 1...Ra3
      • 2.d4#
    • 1...Raxe4
      • 2.Sf7#
    • 1...Ra5
      • 2.d4#
    • 1...Rxa6
      • 2.d4#
    • 1...Rg3
      • 2.Qxg3#
    • 1...Rgxe4
      • 2.Sf7#
    • 1...Bd1
      • 2.Sd3#
    • 1...Bb3
      • 2.Sd3#
    • 1...Bd3
      • 2.Sxd3#
    • 1...Bxe4
      • 2.Sf7#
    • 1...Sxe4
      • 2.Sf7#
    • 1...g5
      • 2.Qf5#
  • Keys
    • 1.Qe3!
      • threat
        • 2.Sf7#
      • 1...Qxe4
        • 2.Sf3#
      • 1...Raxe4
        • 2.d4#
      • 1...Rgxe4
        • 2.Qg5#
      • 1...Bxe4
        • 2.Sd3#
      • 1...Sxe4
        • 2.Bg7#
      • 1...Qh7
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 1
    • REMOVED MATES = 9
  • Sets
    • Q(b);SBLOCK,XP(E)::S(H)
    • R(d);N_GUARD::P(B)
    • R(d);SBLOCK,XP(E)::S(H)
    • R(d);N_GUARD,XR(G)::P(B)
    • R(e);N_GUARD::QAB(C),XR(e)
    • R(e);SBLOCK,XP(E)::S(H)
    • B(c);N_GUARD::S(A)
    • B(c);N_GUARD::S(A),XB(c)
    • B(c);SBLOCK,XP(E)::S(H)
    • S(g);SBLOCK,XP(E)::S(H)
    • P(h);N_GUARD::QAR1(C)
  • Actual
    • Q(C);
    • Threat
      • S(H)
    • Vars
      • Q(b);N_GUARD,P_SPINQ(b),XP(E)::S(A)
      • R(d);N_GUARD,P_SPINR(d),XP(E)::P(B)
      • R(e);N_GUARD,P_SPINR(e),XP(E)::QAR2(C)
      • B(c);N_GUARD,P_SPINB(c),XP(E)::S(A)
      • S(g);OGATEB,P_SPINS(g),XP(E)::B(K)
      • Q(b);N_GUARD::S(A)
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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).