MESON Chess Problem Database

Problem Display
PID: 250155 (8/2K2p2/2pB4/2p2PQ1/3kP1RN/N1p1R2r/4p2P/5q2 w - - 0 1)

van Dijk, Johannes

Der Tijd, 1927

8/2K2p2/2pB4/2p2PQ1/3kP1RN/N1p1R2r/4p2P/5q2

#2

10 + 8

6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5
      • 2.Sxf5#
    • 1...c4
      • 2.Sc2#
  • Tries
    • 1.Bxc5+?
      • 1...Ke5
        • 2.Sc4#
        • 2.Qe7#
      • 1...Kxc5!
    • 1.f6?
      • threat
        • 2.Bxc5#
        • 2.Be5#
        • 2.Qxc5#
      • 1...Qxf6
        • 2.Bxc5#
        • 2.Qxc5#
      • 1...Qf4
        • 2.Qxc5#
      • 1...Qf5
        • 2.Sxf5#
      • 1...c4
        • 2.Sc2#
        • 2.Bc5#
        • 2.Qc5#
      • 1...Rxe3!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Bf4#
      • 1...Kxe3
        • 2.Bxc5#
      • 1...Qxf5
        • 2.Sxf5#
      • 1...Rxe3
        • 2.Bg3#
      • 1...Qf4
        • 2.Bxf4#
      • 1...c4
        • 2.Sc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(a);XP(G)::S(F),XQ(a)
    • P(f);SBLOCK::S(B)
  • Tries
    • Try
      • B(I);CHECK,XP(f)
      • Refutation
        • K(e);S_FLIGHT,XB(I)
    • Try
      • P(G);
      • Threat
        • DUALS(3)
      • Vars
        • Q(a);P_PINB(I)::QAB1(H),XP(f)
        • Q(a);N_GUARD::S(F),XQ(a)
      • Refutation
        • R(d);XR(C)
  • Actual
    • Q(H);
    • Threat
      • QAR(H)+B(I)
    • Vars
      • K(e);N_GUARD,S_FLIGHT,XR(C)::B(I),XP(f)
      • Q(a);XP(G)::S(F),XQ(a)
      • R(d);SBLOCK,XR(C)::QAR(H)+B(I)
      • Q(a);P_PINB(I)::QAR(H)+B(I),XQ(a)
      • P(f);SBLOCK::S(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).