MESON Chess Problem Database

Problem Display
PID: 70853 (8/2b5/Qpp1pN2/1pk1r1R1/1prN3K/1B6/2b5/2R3B1 w - - 0 1)

Leites, Samuil Davidovich

Source?, 1929

8/2b5/Qpp1pN2/1pk1r1R1/1prN3K/1B6/2b5/2R3B1

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4+
      • 2.Se4#
    • 1...Be4
      • 2.Sxb5#
      • 2.Sf5#
  • Tries
    • 1.Qb7?
      • threat
        • 2.Qxc6#
      • 1...Rxd4+
        • 2.Se4#
      • 1...Be4
        • 2.Sf5#
      • 1...Kd6!
  • Keys
    • 1.Qa8!
      • threat
        • 2.Qxc6#
      • 1...Rxd4+
        • 2.Se4#
      • 1...Kd6
        • 2.Qf8#
      • 1...Be4
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(c);CHECK,N_SPINR(f),P_SPINB(a),P_SPINR(c),XS(D)::S(H)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAR1(G),XP(h)
      • Vars
        • R(c);CHECK,N_SPINR(f),P_SPINB(a),P_SPINR(c),XS(D)::S(H)
        • B(a);N_PINS(D),N_SPINR(f),P_SPINR(c)::B(B)+S(D)
      • Refutation
        • K(e);N_SPINR(f),S_FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAR1(G),XP(h)
    • Vars
      • R(c);CHECK,N_SPINR(f),P_SPINB(a),P_SPINR(c),XS(D)::S(H)
      • K(e);N_SPINR(f),S_FLIGHT::QAB(G)
      • B(a);N_PINS(D),N_SPINR(f),P_SPINR(c)::B(B)+S(D)
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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).