MESON Chess Problem Database

Problem Display
PID: 11314 (q4B1b/r2R1p2/p1pp1p2/r2k1N1K/5P2/p7/4Q3/8 w - - 0 1)

Barnett, Bernard

Chess, 1938

q4B1b/r2R1p2/p1pp1p2/r2k1N1K/5P2/p7/4Q3/8

#2

6 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Rxd6#
    • 1...c5
      • 2.Rxd6#
  • Tries
    • 1.Qd3+?
      • 1...Ke6
        • 2.Rxd6#
      • 1...Kc5!
  • Keys
    • 1.Sxd6!
      • threat
        • 2.Sb7#
        • 2.Qc4#
      • 1...Kd4+
        • 2.Sb5#
      • 1...Kc5
        • 2.Sc8#
      • 1...Qxf8
        • 2.Qc4#
      • 1...Rxd7
        • 2.Qc4#
      • 1...Qb7
        • 2.Sxb7#
        • 2.Qc4#
      • 1...Qb8
        • 2.Qc4#
      • 1...Qc8
        • 2.Qc4#
      • 1...Qd8
        • 2.Qc4#
      • 1...Qe8
        • 2.Qc4#
      • 1...Ra4
        • 2.Sb7#
      • 1...Rc5
        • 2.Sb7#
        • 2.Qe4#
      • 1...Rb7
        • 2.Sxb7#
        • 2.Qc4#
      • 1...Rc7
        • 2.Qc4#
      • 1...c5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 10
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::R1(E),XP(f)
    • P(e);SBLOCK::R1(E),XP(f)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_SPINP(f),P_PINS(C),S_FLIGHT::R1(E),XP(f)
      • Refutation
        • K(c);P-FLIGHT
  • Actual
    • S(C);XP(f)
    • Threat
      • DUALS(2)
    • Vars
      • K(c);CHECK,P-FLIGHT::R(E)+S(C),DCHECK
      • K(c);P-FLIGHT::B(F)+S(C)
      • Q(j);XB(F)::QAB1(A)
      • R(h);XR(E)::QAB1(A)
      • Q(j);::QAB1(A)
      • R(b);::R(E)+S(C)
      • R(h);::QAB1(A)
      • P(e);SBLOCK::QAB1(A)
HTML5 logo

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).