MESON Chess Problem Database

Problem Display
PID: 189832 (8/8/3pN3/1P2p3/4k3/1K3p2/3p4/3N1Q2 w - - 0 1)

Maksimov, Nikolai Ivanovich

Magyar Sakkujsag, 1912

8/8/3pN3/1P2p3/4k3/1K3p2/3p4/3N1Q2

#2

5 + 5

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Qc4#
  • Tries
    • 1.Kc3?
      • threat
        • 2.Qd3#
      • 1...Kd5
        • 2.Qc4#
      • 1...Kf5!
  • Keys
    • 1.Qh3!
      • 1...Kd3
        • 2.Qxf3#
      • 1...Kd5
        • 2.Sc3#
      • 1...f2
        • 2.Sc3#
      • 1...d5
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAB1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAB1(B)
      • Vars
        • K(c);S_FLIGHT::QAB1(B)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(B);
    • Vars
      • K(c);P_SPINP(b),S_FLIGHT::QAR2(B),XP(b)
      • K(c);S_FLIGHT::S(A)
      • P(b);::S(A)
      • P(e);SBLOCK::QAB(B)
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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).