MESON Chess Problem Database

Problem Display
PID: 272848 (2N5/5p2/5p2/3p1k1K/3P1bR1/2P5/8/5Q2 w - - 0 1)

Lebedev, Aleksandr N

Schackvarlden, 1930

2N5/5p2/5p2/3p1k1K/3P1bR1/2P5/8/5Q2

#2

6 + 5

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Tries
    • 1.Se7+?
      • 1...Ke4
        • 2.Qe2#
      • 1...Ke6!
    • 1.Rg3?
      • 1...Ke4
        • 2.Qd3#
        • 2.Qb1#
      • 1...Ke6!
  • Keys
    • 1.Qh3!
      • 1...Ke4
        • 2.Sd6#
      • 1...Ke6
        • 2.Rg6#
      • 1...Bc1
        • 2.Rh4#
      • 1...Bd2
        • 2.Rh4#
      • 1...Bh2
        • 2.Rh4#
      • 1...Be3
        • 2.Rh4#
      • 1...Bg3
        • 2.Rh4#
      • 1...Be5
        • 2.Rh4#
      • 1...Bg5
        • 2.Rh4#
      • 1...Bd6
        • 2.Rh4#
      • 1...Bh6
        • 2.Rh4#
      • 1...Bc7
        • 2.Rh4#
      • 1...Bb8
        • 2.Rh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
      • Refutation
        • K(c);N_SPINB(a),S_FLIGHT
    • Try
      • R(D);
      • Refutation
        • K(c);N_SPINB(a),S_FLIGHT
  • Actual
    • Q(A);N_PINB(a)
    • Vars
      • K(c);N_GUARD,P_SPINB(a),S_FLIGHT::S(F)
      • K(c);N_GUARD,S_FLIGHT::QAB(A)+R(D)
      • B(a);::QAB(A)+R(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).