MESON Chess Problem Database

Problem Display
PID: 196673 (4N2b/r2PnK2/3pR2p/1P1k1n1Q/1P5p/1Ppr1qp1/4N1B1/7b w - - 0 1)

Feenstra Kuiper, Pieter

Haagsche Post, 1921

4N2b/r2PnK2/3pR2p/1P1k1n1Q/1P5p/1Ppr1qp1/4N1B1/7b

#2

10 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Qxf3#
    • 1...Rd2
      • 2.Qxf3#
    • 1...Rd4
      • 2.Sxc3#
    • 1...Ra1
      • 2.Sc7#
    • 1...Ra2
      • 2.Sc7#
    • 1...Ra3
      • 2.Sc7#
    • 1...Ra4
      • 2.Sc7#
    • 1...Ra5
      • 2.Sc7#
    • 1...Ra6
      • 2.Sc7#
    • 1...Rc7
      • 2.Sxc7#
    • 1...Ra8
      • 2.Sc7#
    • 1...Bd4
      • 2.Sf4#
    • 1...Bf6
      • 2.Sxf6#
  • Tries
    • 1.Qxf5+?
      • 1...Be5
        • 2.Sf6#
        • 2.Rxd6#
      • 1...Sxf5!
  • Keys
    • 1.Qg4!
      • threat
        • 2.Qc4#
      • 1...Se3+
        • 2.Qxf3#
      • 1...Sd4+
        • 2.Sf4#
      • 1...Sg7+
        • 2.Sf6#
      • 1...Qe4
        • 2.Qxe4#
      • 1...Rd4
        • 2.Sxc3#
      • 1...Rc7
        • 2.Sxc7#
      • 1...Bd4
        • 2.Sf4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 10
  • Sets
    • R(c);N_GUARD::QAB(F),XQ(d)
    • R(c);N_GUARD,SBLOCK,S_CUTB(m)::S(A),XP(b)
    • R(k);N_GUARD::S(J)
    • R(k);N_GUARD::S(J),XR(k)
    • B(m);SBLOCK::S(A)
    • B(m);N_GUARD::S(J),XB(m)
  • Tries
    • Try
      • Q(F);CHECK,P_SPINQ(F),XS(h)
      • Refutation
        • S(l);P_PINP(H),XQ(F)
  • Actual
    • Q(F);N_PINS(h)
    • Threat
      • QAB1(F)
    • Vars
      • S(h);CHECK,S_CUTR(c)::QAB(F),XQ(d)
      • S(h);CHECK,SBLOCK::S(A)
      • S(h);CHECK,S_CUTB(m)::S(J)
      • Q(d);N_GUARD::QAB1(F),XQ(d)
      • R(c);N_GUARD,S_CUTB(m)::S(A),XP(b)
      • R(k);N_GUARD::S(J),XR(k)
      • B(m);SBLOCK::S(A)
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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).