MESON Chess Problem Database

Problem Display
PID: 109410 (1K6/5N2/8/3N1P1k/5Qnb/2p3q1/4R3/3B4 w - - 0 1)

Smulders, Kurt

2nd Comm., 04. Kwik-Toernooi, 1975

1K6/5N2/8/3N1P1k/5Qnb/2p3q1/4R3/3B4

#2

7 + 5

102 Probleemblad 1975
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf4+
      • 2.Sxf4#
  • Tries
    • 1.Re5?
      • threat
        • 2.Qh6#
      • 1...Qxf4
        • 2.Sxf4#
      • 1...Bg5
        • 2.Qxg5#
      • 1...Qe3
        • 2.Bxg4#
        • 2.Qxg4#
      • 1...Qf3!
  • Keys
    • 1.Rh2!
      • threat
        • 2.Sf6#
      • 1...Qxf4+
        • 2.Sxf4#
      • 1...Qxh2
        • 2.Bxg4#
      • 1...Qf3
        • 2.Qg5#
      • 1...Qh3
        • 2.Qh6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,XQ(C)::S(D),XQ(b)
  • Tries
    • Try
      • R(B);N_SPINQ(C),P_PINS(c)
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);P_PINR(B),XQ(C)::S(D),XQ(b)
        • B(d);N_GUARD::QAR1(C),XB(d)
      • Refutation
        • Q(b);N_SPINS(c)
  • Actual
    • R(B);P_PINB(d),P_PINS(c)
    • Threat
      • S(D)
    • Vars
      • Q(b);CHECK,XQ(C)::S(D),XQ(b)
      • Q(b);N_GUARD,N_SPINB(d),XR(B)::B(A),XS(c)
      • Q(b);N_PINQ(C),N_SPINS(c)::QAR1(C)
      • Q(b);N_PINQ(C),N_SPINB(d)::QAR1(C)
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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).