MESON Chess Problem Database

Problem Display
PID: 263741 (8/b7/2Brp1Q1/3bpr2/5k2/6N1/4P1Rp/4N2K w - - 0 1)

Lebedev, Aleksandr N

Tijdschrift vd NSB, 1934

8/b7/2Brp1Q1/3bpr2/5k2/6N1/4P1Rp/4N2K

#2

7 + 8

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bxg2+
      • 2.Sxg2#
    • 1...Be3
      • 2.Sd3#
  • Tries
    • 1.Qh6+?
      • 1...Kg4
        • 2.Se4#
      • 1...Rg5!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Qg4#
      • 1...Bxg2+
        • 2.Sxg2#
      • 1...Ke4
        • 2.Rg4#
      • 1...Rg5
        • 2.Sd3#
      • 1...Bf3
        • 2.Qg3#
      • 1...e4
        • 2.Qg3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • B(c);CHECK,XR(D)::S(A),XB(c)
    • B(h);SBLOCK::S(A)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);N_GUARD,P-FLIGHT,S_CUTR(e)::R(D)+S(E)
      • Refutation
        • R(e);P_SPINR(e)
  • Actual
    • S(E);
    • Threat
      • QAR1(G)
    • Vars
      • B(c);CHECK,XR(D)::S(A),XB(c)
      • K(b);N_PINR(D),P-FLIGHT,P_SPINB(c),P_SPINR(e)::R(D)
      • R(e);::S(A)
      • B(c);::QAB1(G)
      • P(d);N_PINR(D),SBLOCK::QAB1(G)
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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).