MESON Chess Problem Database

Problem Display
PID: 169825 (B1N5/6Q1/1rn3pK/R1N2p2/1p3k2/1rn4R/4P3/B7 w - - 0 1)

Mees, Wouter Jacob Gregorius

2nd Comm., Bevrijdinastoern, 1945

B1N5/6Q1/1rn3pK/R1N2p2/1p3k2/1rn4R/4P3/B7

#2

9 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sd3+?
      • 1...Ke4
        • 2.Sd6#
        • 2.Qe5#
      • 1...Kg4!
    • 1.Se6+?
      • 1...Ke4
        • 2.Sd6#
        • 2.Re5#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kg4!
    • 1.Qc7+?
      • 1...Kg4
        • 2.Qg3#
      • 1...Se5!
  • Keys
    • 1.Qxg6!
      • threat
        • 2.Qg3#
      • 1...Ke5
        • 2.Qd6#
      • 1...Sxe2
        • 2.Qg5#
      • 1...Sxa5
        • 2.Sd3#
      • 1...Sb1
        • 2.Qg5#
      • 1...Sd1
        • 2.Qg5#
      • 1...Sa2
        • 2.Qg5#
      • 1...Sa4
        • 2.Qg5#
      • 1...Se4
        • 2.Se6#
      • 1...Sb5
        • 2.Qg5#
      • 1...Sd5
        • 2.Qg5#
      • 1...Sd4
        • 2.Sd3#
      • 1...Se5
        • 2.e3#
      • 1...Sa7
        • 2.Sd3#
      • 1...Se7
        • 2.Sd3#
      • 1...Sb8
        • 2.Sd3#
      • 1...Sd8
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 16
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(h)
    • Try
      • S(E);CHECK
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(h)
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(G)
      • Refutation
        • S(g);P_SPINS(g)
  • Actual
    • Q(G);XP(h)
    • Threat
      • QAB1(G)
    • Vars
      • K(d);P_SPINS(b),S_FLIGHT::QAB1(G)
      • S(b);XP(B)::QAB1(G)
      • S(g);P_PINQ(G),XR(D)::S(E)
      • S(b);::QAB1(G)
      • S(b);SBLOCK::S(E)
      • S(g);P_PINQ(G)::S(E)
      • S(g);P_PINQ(G),SBLOCK::P(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).