MESON Chess Problem Database

Problem Display
PID: 221887 (Bb3Q2/1q5p/4p3/4k1P1/2RnP2N/6N1/b3p2K/4R3 w - - 0 1)

Kaps, Carl

Funkschach, 1927

Bb3Q2/1q5p/4p3/4k1P1/2RnP2N/6N1/b3p2K/4R3

#2

9 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qxe4
      • 2.Qxb8#
    • 1...Bd6
      • 2.Qf6#
    • 1...Sc2
      • 2.Sf3#
    • 1...Sb3
      • 2.Sf3#
    • 1...Sf3+
      • 2.Sxf3#
    • 1...Sb5
      • 2.Sf3#
    • 1...Sc6
      • 2.Sf3#
    • 1...h5
      • 2.Sg6#
    • 1...h6
      • 2.Sg6#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Qf4#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Qxe4
        • 2.Qxb8#
      • 1...Qf7
        • 2.Qc5#
      • 1...Sf5
        • 2.Sf3#
      • 1...Kxe4+!
    • 1.Rc5+?
      • 1...Qd5
        • 2.Qxb8#
      • 1...Bd5!
    • 1.Qxb8+?
      • 1...Qc7
        • 2.Qxc7#
      • 1...Qxb8!
  • Keys
    • 1.Sxe2!
      • threat
        • 2.Qf4#
      • 1...Kxe4+
        • 2.Sf4#
      • 1...Sf3+
        • 2.Sxf3#
      • 1...Qxe4
        • 2.Qxb8#
      • 1...Sxe2
        • 2.Sf3#
      • 1...Qf7
        • 2.Qc5#
      • 1...Sf5
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(f);N_GUARD,XP(E)::QAB(I),XB(h)
    • B(h);SBLOCK::QAB1(I)
    • S(c);N_GUARD::S(F)
    • S(c);CHECK,N_GUARD::S(F),XS(c)
    • P(g);N_GUARD::S(F)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB1(I)
      • Vars
        • S(c);CHECK,N_GUARD::S(F),XS(c)
        • Q(f);N_GUARD,XP(E)::QAB(I),XB(h)
        • Q(f);N_GUARD::QAR2(I)
        • S(c);N_GUARD::S(F)
      • Refutation
        • K(d);CHECK,P-FLIGHT,P_SPINP(b),P_SPINQ(f),P_SPINS(c),XP(E)
    • Try
      • R(D);CHECK
      • Vars
        • Q(f);P_SPINQ(f)::QAB(I),XB(h)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(I);CHECK,XB(h)
      • Vars
        • Q(f);N_GUARD,P_SPINQ(f)::QAB(I),XQ(f)
      • Refutation
        • Q(f);XQ(I)
  • Actual
    • S(C);XP(b)
    • Threat
      • QAB1(I)
    • Vars
      • K(d);CHECK,P-FLIGHT,P_SPINQ(f),P_SPINS(c),XP(E)::R(A)+S(C)
      • S(c);CHECK,N_GUARD::S(F),XS(c)
      • Q(f);N_GUARD,XP(E)::QAB(I),XB(h)
      • S(c);N_GUARD,XS(C)::S(F)
      • Q(f);N_GUARD::QAR2(I)
      • S(c);N_GUARD::S(F)
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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).