MESON Chess Problem Database

Problem Display
PID: 196948 (B2Q4/8/2nppN2/4kp2/8/2K2P2/8/8 w - - 0 1)

Stuiver, PJG

Tijdschrift vd NSB, 1919

B2Q4/8/2nppN2/4kp2/8/2K2P2/8/8

#2

5 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4+?
      • 1...Kd5
        • 2.Qa5#
      • 1...fxg4
        • 2.Qg5#
      • 1...Kf4!
    • 1.Sd7+?
      • 1...Kd5
        • 2.Qa5#
      • 1...Kf4!
  • Keys
    • 1.Sh5!
      • 1...Kd5
        • 2.Qa5#
      • 1...Sxd8
        • 2.f4#
      • 1...f4
        • 2.Qg5#
      • 1...Sb4
        • 2.Qf6#
        • 2.Qh8#
        • 2.f4#
      • 1...Sd4
        • 2.Qf6#
        • 2.Qh8#
        • 2.f4#
      • 1...Sa5
        • 2.Qf6#
        • 2.Qh8#
        • 2.f4#
      • 1...Sa7
        • 2.Qf6#
        • 2.Qh8#
        • 2.f4#
      • 1...Se7
        • 2.Qh8#
        • 2.f4#
      • 1...Sb8
        • 2.Qf6#
        • 2.Qh8#
        • 2.f4#
      • 1...d5
        • 2.Qc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(d),P_SPINS(c)::QAR(E)
        • P(b);XS(C)::QAR2(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • S(C);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINS(c)::QAR(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • S(C);
    • Vars
      • K(a);P-FLIGHT,P_SPINP(d),P_SPINS(c)::QAR(E)
      • S(c);XQ(E)::P(B)
      • P(b);OGATEB::QAR2(E)
      • P(d);OGATEB,SBLOCK::QAB(E)
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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).