MESON Chess Problem Database

Problem Display
PID: 204235 (4Q2q/3pbp2/1p1P3r/6Rp/4kN1K/1rpR2B1/3n2P1/1B3N2 w - - 0 1)

Daniel, Arthur William

Gros, 1938

4Q2q/3pbp2/1p1P3r/6Rp/4kN1K/1rpR2B1/3n2P1/1B3N2

#2

10 + 11

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Re3#
    • 1...Qf6
      • 2.Qa8#
    • 1...Qg7
      • 2.Qa8#
    • 1...Qh7
      • 2.Qa8#
    • 1...Sf3+
      • 2.gxf3#
    • 1...c2
      • 2.Sxd2#
    • 1...f6
      • 2.Qxe7#
  • Tries
    • 1.Qxe7+?
      • 1...Qe5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Re6!
  • Keys
    • 1.Sh3!
      • threat
        • 2.Sf2#
      • 1...Sf3+
        • 2.gxf3#
      • 1...Qd4
        • 2.Re3#
      • 1...Qf6
        • 2.Qa8#
      • 1...Rf6
        • 2.Re5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • Q(k);SBLOCK::B(A)+R(D),DCHECK
    • Q(k);N_GUARD::QAB(J)
    • S(a);CHECK,OGATE::P(C),XS(a)
    • P(c);N_GUARD::S(B),XS(a)
    • P(j);N_PINR(H),S_CUTQ(k),S_CUTR(g)::QAR(J),XB(i)
  • Tries
    • Try
      • Q(J);CHECK,N_SPINR(H),XB(i)
      • Refutation
        • R(g);P_SPINR(g)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • S(a);CHECK,OGATE::P(C),XS(a)
      • Q(k);SBLOCK::B(A)+R(D),DCHECK
      • Q(k);N_GUARD::QAB(J)
      • R(g);N_PINR(H)::R1(H)
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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).