MESON Chess Problem Database

Problem Display
PID: 6194 (3K2B1/1N1p4/8/R3Bk1p/1p2nP2/1r1q3P/2Q3R1/3r3N w - - 0 1)

Kunze, Otto

Tijdschrift vd NSB, 1927

3K2B1/1N1p4/8/R3Bk1p/1p2nP2/1r1q3P/2Q3R1/3r3N

#2

10 + 8

56 The Problemist 1980

SOLUTION

  • SOUND
  • Sets
    • 1...Qf1
      • 2.Rg5#
    • 1...Qe2
      • 2.Rg5#
    • 1...Qc4
      • 2.Rg5#
    • 1...Qb5
      • 2.Rg5#
    • 1...Qa6
      • 2.Rg5#
    • 1...Qd2
      • 2.Rg5#
    • 1...Qc3
      • 2.Rg5#
    • 1...Qe3
      • 2.Rg5#
    • 1...Qf3
      • 2.Rg5#
    • 1...Qxh3
      • 2.Rg5#
    • 1...Qd4
      • 2.Rg5#
    • 1...Qd5
      • 2.Rg5#
    • 1...Qd6
      • 2.Rg5#
    • 1...Sd2
      • 2.Sd6#
    • 1...Sf2
      • 2.Sd6#
    • 1...Sc3
      • 2.Sd6#
    • 1...Sc5
      • 2.Sd6#
    • 1...Sd6
      • 2.Sxd6#
    • 1...Sf6
      • 2.Sd6#
    • 1...d5
      • 2.Qc8#
    • 1...d6
      • 2.Qc8#
  • Tries
    • 1.Sc5?
      • threat
        • 2.Bh7#
      • 1...Qg3
        • 2.Qxe4#
      • 1...Sg5
        • 2.Rxg5#
      • 1...Qa6
        • 2.Rg5#
        • 2.Qxe4#
      • 1...Qd6
        • 2.Rg5#
        • 2.Qxe4#
      • 1...Sf6
        • 2.Rg5#
      • 1...Sxc5!
    • 1.Sd6+?
      • 1...Qxd6
        • 2.Rg5#
      • 1...Sxd6!
  • Keys
    • 1.Ra6!
      • threat
        • 2.Bh7#
      • 1...Qxa6
        • 2.Rg5#
      • 1...Sg5
        • 2.Sg3#
      • 1...Sd6
        • 2.Sxd6#
      • 1...Sf6
        • 2.Sd6#
      • 1...Qg3
        • 2.Rf6#
      • 1...Qd6
        • 2.Rg5#
      • 1...d6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 16
  • Sets
    • Q(c);P_SPINS(e)::R1(C)
    • Q(c);P_SPINS(e),XP(D)::R1(C)
    • S(e);N_GUARD,P_SPINQ(c)::S(H)
    • S(e);N_GUARD,P_SPINQ(c)::S(H),XS(e)
    • P(h);OGATEB::QAB(B)
  • Tries
    • Try
      • S(H);
      • Threat
        • B(J)
      • Vars
        • Q(c);OGATE,P_SPINS(e)::QAB1(B),XS(e)
        • S(e);N_GUARD,P_SPINQ(c)::R1(C),XS(e)
        • S(e);N_GUARD,P_SPINQ(c)::R1(C)
      • Refutation
        • S(e);P_SPINQ(c),XS(H)
    • Try
      • S(H);CHECK
      • Vars
        • Q(c);P_SPINS(e),XS(H)::R1(C)
      • Refutation
        • S(e);P_SPINQ(c),XS(H)
  • Actual
    • R(F);
    • Threat
      • B(J)
    • Vars
      • Q(c);P_SPINS(e),XR(F)::R1(C)
      • S(e);N_GUARD,P_SPINQ(c)::S(A)
      • S(e);N_GUARD,P_SPINQ(c)::S(H),XS(e)
      • S(e);N_GUARD,P_SPINQ(c)::S(H)
      • Q(c);P_SPINS(e)::R1(F)
      • Q(c);P_SPINS(e)::R1(C)
      • P(h);OGATEB::QAB(B)
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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).