MESON Chess Problem Database

Problem Display
PID: 276958 (b2NrB2/2n1P1pr/8/npP3Q1/3k1p2/3p1P2/3P3b/NKR5 w - - 0 1)

Bielefeldt, German

Peris-120 MT (Problemas), 2024

b2NrB2/2n1P1pr/8/npP3Q1/3k1p2/3p1P2/3P3b/NKR5

#2

10 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rh3
      • 2.Bxg7#
    • 1...Rh4
      • 2.Bxg7#
    • 1...Rh5
      • 2.Bxg7#
    • 1...Rh8
      • 2.Bxg7#
    • 1...Sb3
      • 2.Sxb3#
    • 1...Sc4
      • 2.Sb3#
    • 1...Sc6
      • 2.Sb3#
    • 1...Sb7
      • 2.Sb3#
      • 2.Sc6#
    • 1...Sd5
      • 2.Se6#
    • 1...Sa6
      • 2.Se6#
    • 1...Se6
      • 2.Sxe6#
  • Tries
    • 1.Sc6+?
      • 1...Sxc6
        • 2.Sb3#
      • 1...Bxc6!
    • 1.Sf7?
      • threat
        • 2.Qe5#
      • 1...Rh5
        • 2.Bxg7#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sc6
        • 2.Sb3#
      • 1...Rxe7!
    • 1.Qxf4+?
      • 1...Kd5
        • 2.Qe4#
      • 1...Be4
        • 2.Qxe4#
      • 1...Bxf4!
    • 1.Qf6+?
      • 1...Kd5
        • 2.Qd6#
      • 1...gxf6!
  • Keys
    • 1.c6!
      • threat
        • 2.Qc5#
      • 1...Rh5
        • 2.Bxg7#
      • 1...Sb3
        • 2.Sxb3#
      • 1...Sc4
        • 2.Sb3#
      • 1...Sb7
        • 2.Sb3#
      • 1...Sd5
        • 2.Se6#
      • 1...Sa6
        • 2.Se6#
      • 1...Se6
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • R(i);N_GUARD::B(J),XP(h)
    • S(e);N_GUARD::S(A),XS(e)
    • S(e);N_GUARD::S(A)
    • S(g);N_GUARD::S(I)
    • S(g);N_GUARD::S(I),XS(g)
  • Tries
    • Try
      • S(I);CHECK
      • Vars
        • S(e);XS(I)::S(A)
      • Refutation
        • B(j);XS(I)
    • Try
      • S(I);
      • Threat
        • QAB1(G)
      • Vars
        • R(i);N_GUARD::B(J),XP(h)
        • S(e);N_GUARD::S(A)
      • Refutation
        • R(k);XP(H)
    • Try
      • Q(G);CHECK,XP(d)
      • Vars
        • K(c);P-FLIGHT,S_CUTB(j)::QAB1(G)
        • B(j);N_GUARD,P_SPINB(j)::QAR1(G),XB(j)
      • Refutation
        • B(a);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(c);P-FLIGHT,S_CUTB(j),S_CUTS(g)::QAR1(G)
      • Refutation
        • P(h);XQ(G)
  • Actual
    • P(F);
    • Threat
      • QAB1(G)
    • Vars
      • R(i);N_GUARD::B(J),XP(h)
      • S(e);N_GUARD::S(A),XS(e)
      • S(e);N_GUARD::S(A)
      • S(g);N_GUARD::S(I)
      • S(g);N_GUARD::S(I),XS(g)
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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).