MESON Chess Problem Database

Problem Display
PID: 223298 (1Nq5/7P/2p1p1n1/Q2pk3/2n1N1P1/3P1p2/2PB1K2/8 w - - 0 1)

Kondelik, Charles

Charleston Sunday News, 1885

1Nq5/7P/2p1p1n1/Q2pk3/2n1N1P1/3P1p2/2PB1K2/8

#2

9 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Bc3#
      • 2.Qc3#
    • 1...Qd8
      • 2.Sxc6#
    • 1...Qf8
      • 2.Sxc6#
    • 1...Qg8
      • 2.Sxc6#
    • 1...Qh8
      • 2.Sxc6#
    • 1...Sf4
      • 2.Bc3#
    • 1...Sf8
      • 2.h8Q#
      • 2.h8B#
  • Tries
    • 1.Sd7+?
      • 1...Kd4
        • 2.Bc3#
        • 2.Qc3#
        • 2.Qc5#
      • 1...Qxd7!
    • 1.Qc7+?
      • 1...Kd4
        • 2.Sxc6#
        • 2.Bc3#
      • 1...Sd6
        • 2.Sxc6#
        • 2.Qg7#
      • 1...Qxc7!
    • 1.h8Q+?
      • 1...Qxh8
        • 2.Sxc6#
      • 1...Sxh8!
    • 1.h8B+?
      • 1...Qxh8
        • 2.Sxc6#
      • 1...Sxh8!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Qf6#
      • 1...Kd4
        • 2.Bc3#
      • 1...Qxd8
        • 2.Sxc6#
      • 1...dxe4
        • 2.d4#
      • 1...Se7
        • 2.h8Q#
        • 2.h8B#
      • 1...d4
        • 2.Qg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • Q(h);N_GUARD::S(I),XP(e)
    • S(g);SBLOCK::B(B)
    • S(g);N_GUARD,S_CUTQ(h)::P=Q
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • Q(h);XS(I)
    • Try
      • Q(G);CHECK,N_PINP(c)
      • Refutation
        • Q(h);XQ(G)
    • Try
      • P(H);CHECK
      • Vars
        • Q(h);XQ(H)::S(I),XP(e)
      • Refutation
        • S(g);XQ(H)
    • Try
      • P(H);CHECK
      • Vars
        • Q(h);XB(H)::S(I),XP(e)
      • Refutation
        • S(g);XB(H)
  • Actual
    • Q(G);N_PINP(c)
    • Threat
      • QAB1(G)
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::B(B)
      • Q(h);N_GUARD,XQ(G)::S(I),XP(e)
      • P(c);SBLOCK,XS(E)::P(D)
      • S(g);N_GUARD::P=Q
      • P(c);SBLOCK::QAR2(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).