MESON Chess Problem Database

Problem Display
PID: 145743 (2B4R/K1kNB2Q/1pq2p2/np6/1P6/N7/nr6/2R2b2 w - - 0 1)

Kubbel, Evgeny Ivanovich

Tijdschrift vd NSB, 1930

2B4R/K1kNB2Q/1pq2p2/np6/1P6/N7/nr6/2R2b2

#2

9 + 9

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qh2#
    • 1...Re2
      • 2.Sxb5#
    • 1...Rh2
      • 2.Qxh2#
    • 1...Be2
      • 2.Qh2#
    • 1...Bg2
      • 2.Sxb5#
      • 2.Qh2#
    • 1...Bh3
      • 2.Sxb5#
  • Tries
    • 1.Bd8+?
      • 1...Kxc8
        • 2.Sxb6#
        • 2.Bxb6#
      • 1...Kd6!
  • Keys
    • 1.Sb8!
      • threat
        • 2.Sa6#
      • 1...Qxc1
        • 2.Bc5#
      • 1...Sxb4
        • 2.Bxb4#
      • 1...Qc2
        • 2.Qh2#
      • 1...Qc3
        • 2.Bc5#
      • 1...Qc4
        • 2.Sxb5#
      • 1...Qc5
        • 2.Bxc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • R(c);N_GUARD::QAB(G)
    • R(c);S_CUTB(a)::S(B),XP(e)
    • R(c);N_GUARD::QAB(G),XR(c)
    • B(a);S_CUTR(c)::QAB(G)
    • B(a);N_GUARD::S(B),XP(e)
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • K(i);N_SPINQ(g),S_FLIGHT
  • Actual
    • S(E);
    • Threat
      • S(E)
    • Vars
      • Q(g);N_GUARD,N_SPINQ(g),XR(A)::QAR(G)+B(F)
      • S(b);OGATE,XP(C)::QAR(G)+B(F),XS(b)
      • Q(g);S_CUTR(c)::QAB(G)
      • Q(g);N_GUARD::QAR(G)+B(F)
      • Q(g);S_CUTB(a)::S(B),XP(e)
      • Q(g);N_GUARD::QAR(G)+B(F),XQ(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).