MESON Chess Problem Database

Problem Display
PID: 232411 (2n3K1/1n2p3/R3N1p1/1k1N4/1p1Pp3/2p3q1/Q3b2b/8 w - - 0 1)

Bottger, Horst

Freie Presse, 1992

2n3K1/1n2p3/R3N1p1/1k1N4/1p1Pp3/2p3q1/Q3b2b/8

#2

6 + 11

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qf4
      • 2.Qxe2#
    • 1...Qh4
      • 2.Qxe2#
    • 1...Qe5
      • 2.Qxe2#
    • 1...Qd6
      • 2.Qxe2#
    • 1...Qb8
      • 2.Qxe2#
    • 1...Qg1
      • 2.Qxe2#
    • 1...Qg5
      • 2.Qxe2#
    • 1...Bc4
      • 2.Qa4#
    • 1...Sbd6
      • 2.Sdc7#
      • 2.Sec7#
    • 1...Sb6
      • 2.Rxb6#
    • 1...Scd6
      • 2.Sdc7#
      • 2.Sec7#
      • 2.Rb6#
    • 1...Sa7
      • 2.Rb6#
    • 1...b3
      • 2.Qa4#
    • 1...e3
      • 2.Qxe2#
  • Tries
    • 1.Sxc3+?
      • 1...bxc3
        • 2.Qa4#
      • 1...Qxc3!
    • 1.Sdf4?
      • threat
        • 2.Sc7#
      • 1...Qxf4
        • 2.Qxe2#
      • 1...b3
        • 2.Qa4#
      • 1...Bc4
        • 2.Qa4#
      • 1...Sb6!
  • Keys
    • 1.Sef4!
      • threat
        • 2.Sc7#
      • 1...Qxf4
        • 2.Qxe2#
      • 1...Sb6
        • 2.Rxb6#
      • 1...b3
        • 2.Qa4#
      • 1...Bc4
        • 2.Qa4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 8
  • Sets
    • Q(d);N_GUARD::QAB(A),XB(a)
    • B(a);SBLOCK::QAB1(A)
    • S(k);N_GUARD::R1(D),XS(k)
    • S(k);N_GUARD::R1(D)
    • P(e);::QAB1(A)
    • P(f);S_CUTQ(d)::QAB(A),XB(a)
  • Tries
    • Try
      • S(C);CHECK,XP(c)
      • Vars
        • P(e);XS(C)::QAB1(A)
      • Refutation
        • Q(d);XS(C)
    • Try
      • S(C);
      • Threat
        • S(E)
      • Vars
        • Q(d);N_GUARD,XS(C)::QAB(A),XB(a)
        • P(e);::QAB1(A)
        • B(a);P_PINS(E),SBLOCK::QAB1(A)
      • Refutation
        • S(k);
  • Actual
    • S(E);
    • Threat
      • S(C)
    • Vars
      • Q(d);N_GUARD,XS(E)::QAB(A),XB(a)
      • S(k);N_GUARD::R1(D),XS(k)
      • P(e);::QAB1(A)
      • B(a);P_PINS(C),SBLOCK::QAB1(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).