MESON Chess Problem Database

Problem Display
PID: 244430 (nK6/p3p3/8/4N2R/pN1k1bRq/8/rr1P3p/B1Qn1b1B w - - 0 1)

Eerkes, Allard Pieter

Tijdschrift vd KNSB, 1934

nK6/p3p3/8/4N2R/pN1k1bRq/8/rr1P3p/B1Qn1b1B

#2

9 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh3
      • 2.Rxf4#
    • 1...Bg2
      • 2.Qc4#
    • 1...Bh3
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Sf2
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Se3
      • 2.Qc3#
      • 2.dxe3#
    • 1...Sb6
      • 2.Sc6#
    • 1...Sc7
      • 2.Sc6#
  • Tries
    • 1.Bxb2+?
      • 1...Sxb2
        • 2.Sc6#
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Rxb2!
    • 1.Rgxh4?
      • threat
        • 2.Rxf4#
      • 1...Bg2
        • 2.Qc4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sf2
        • 2.Qc3#
      • 1...Bd3!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qd5#
      • 1...Bg2
        • 2.Qc4#
      • 1...Bc4
        • 2.Qxc4#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se3
        • 2.Qc3#
      • 1...Sb6
        • 2.Sc2#
      • 1...Sc7
        • 2.Sf3#
      • 1...e6
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • Q(i);N_GUARD::R(F),XB(h)
    • B(b);N_GUARD::QAR1(B)
    • B(b);N_GUARD::QAR1(B),XB(b)
    • S(a);N_GUARD::QAB1(B)
    • S(a);N_GUARD,N_SPINR(d)::QAB1(B),XS(a)
    • S(l);N_PINS(E),P_PINS(G)::S(E)
    • S(l);::S(G)
  • Tries
    • Try
      • B(A);CHECK,N_SPINS(E),P_SPINS(G),XR(d)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(B),XS(a)
      • Refutation
        • R(c);N_PINS(G),P_PINS(E),XB(A)
    • Try
      • R(F);XQ(i)
      • Threat
        • R(F),XB(h)
      • Vars
        • B(b);N_GUARD::QAR1(B)
        • B(b);N_GUARD::QAR1(B),XB(b)
        • S(a);N_GUARD,N_SPINR(d)::QAB1(B),XS(a)
        • S(a);N_GUARD::QAB1(B)
      • Refutation
        • B(b);
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • B(b);N_GUARD::QAR1(B)
      • B(b);N_GUARD::QAR1(B),XB(b)
      • S(a);N_GUARD,N_SPINR(d)::QAB1(B),XS(a)
      • S(a);N_GUARD::QAB1(B)
      • S(l);N_PINS(E),P_PINS(G)::S(E)
      • S(l);::S(G)
      • P(k);N_GUARD::QAR2(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).