MESON Chess Problem Database

Problem Display
PID: 275767 (1B1q4/4p3/b2pP1B1/b2N2Rp/3k3r/3n2Np/2QP1P1K/1rn5 w - - 0 1)

Kofman, Rafael Moiseevich

Schackvarlden, 1932

1B1q4/4p3/b2pP1B1/b2N2Rp/3k3r/3n2Np/2QP1P1K/1rn5

#2

10 + 12

15601 Albrecht-Leiss-Degener Collection 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Qc3#
    • 1...Bc3
      • 2.Qxc3#
    • 1...Bb6
      • 2.Qc3#
    • 1...Bc7
      • 2.Qc3#
    • 1...Sa2
      • 2.Se2#
    • 1...Se2
      • 2.Sxe2#
    • 1...Sb3
      • 2.Se2#
    • 1...Sb4
      • 2.Qc3#
  • Tries
    • 1.Sb4?
      • threat
        • 2.Sc6#
        • 2.Rd5#
        • 2.Qc3#
      • 1...Rxb4
        • 2.Qc3#
      • 1...Sxb4
        • 2.Qc3#
      • 1...Qb6
        • 2.Rd5#
        • 2.Qc3#
      • 1...Qc7
        • 2.Rd5#
      • 1...Qd7
        • 2.Rd5#
        • 2.Qc3#
      • 1...Qc8
        • 2.Rd5#
      • 1...Qe8
        • 2.Rd5#
        • 2.Qc3#
      • 1...Rb3
        • 2.Sc6#
        • 2.Rd5#
      • 1...Bc4
        • 2.Sc6#
        • 2.Qc3#
      • 1...Bb5
        • 2.Rd5#
        • 2.Qc3#
      • 1...Bb7
        • 2.Qc3#
      • 1...Sa2
        • 2.Se2#
        • 2.Sc6#
        • 2.Rd5#
      • 1...Se2
        • 2.Sxe2#
        • 2.Sc6#
        • 2.Rd5#
      • 1...Sf4
        • 2.Sc6#
        • 2.Qe4#
        • 2.Qc3#
      • 1...Se5
        • 2.Sf5#
        • 2.Qc3#
      • 1...d5
        • 2.Sc6#
        • 2.Qc3#
      • 1...Bxb4!
  • Keys
    • 1.Se3!
      • threat
        • 2.Rd5#
      • 1...Rb5
        • 2.Qc4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Bb7
        • 2.Qc4#
      • 1...Sb4
        • 2.Qc3#
      • 1...Sf4
        • 2.Qe4#
      • 1...Se5
        • 2.Sgf5#
      • 1...d5
        • 2.Sef5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 7
  • Sets
    • R(a);S_CUTB(g)::QAB1(A)
    • B(g);N_GUARD::QAB1(A),XB(g)
    • B(g);N_GUARD::QAB1(A)
    • S(b);N_GUARD::S(E)
    • S(b);N_GUARD::S(E),XS(b)
    • S(c);S_CUTB(g)::QAB1(A)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XS(F)::QAB1(A)
        • S(c);XS(F)::QAB1(A)
        • Q(l);::R1(G)
        • B(i);::QAB1(A)
      • Refutation
        • B(g);XS(F)
  • Actual
    • S(F);
    • Threat
      • R1(G)
    • Vars
      • R(a);S_CUTB(i)::QAR1(A)
      • B(i);N_GUARD::QAR1(A),XB(i)
      • B(i);N_GUARD::QAR1(A)
      • S(c);S_CUTB(g)::QAB1(A)
      • S(c);OGATE::QAR1(A)
      • S(c);SBLOCK::S(E)
      • P(j);SBLOCK::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).