MESON Chess Problem Database

Problem Display
PID: 228007 (q6B/r1bp3p/4PP2/p3kp2/2R2N1R/Qp3P2/4p3/4Kn2 w - - 0 1)

Wynne, Frank Wilson

Tidskrift for Schack, 1911

q6B/r1bp3p/4PP2/p3kp2/2R2N1R/Qp3P2/4p3/4Kn2

#2

9 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf3
      • 2.f7#
    • 1...Qe4
      • 2.f7#
    • 1...Qd5
      • 2.f7#
    • 1...Qc6
      • 2.f7#
    • 1...Qb7
      • 2.f7#
    • 1...Bd6
      • 2.Qb2#
    • 1...Bb8
      • 2.f7#
    • 1...d6
      • 2.Qb2#
  • Tries
    • 1.Re4+?
      • 1...Qxe4
        • 2.f7#
      • 1...fxe4!
    • 1.Qc5+?
      • 1...Qd5
        • 2.Qxd5#
        • 2.f7#
      • 1...d5!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Qb2#
      • 1...Kd4
        • 2.Qc5#
      • 1...Qxc6
        • 2.f7#
      • 1...dxc6
        • 2.Qc5#
      • 1...Bb6
        • 2.Qd6#
      • 1...b2
        • 2.Qxb2#
        • 2.Qc3#
      • 1...d5
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(k);N_GUARD,XP(C)::B(I)+P(H)
    • Q(k);N_GUARD::B(I)+P(H)
    • B(h);SBLOCK::QAB(B)
    • B(h);S_CUTQ(k)::B(I)+P(H)
    • P(i);SBLOCK::QAB(B)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • Q(k);XR(D)::B(I)+P(H)
      • Refutation
        • P(f);XR(D)
    • Try
      • Q(B);CHECK
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • R(D);
    • Threat
      • QAB(B)
    • Vars
      • K(e);S_FLIGHT::QAB1(B)
      • Q(k);N_GUARD,XR(D)::B(I)+P(H)
      • P(i);N_GUARD,XR(D)::QAR2(B)
      • B(h);N_GUARD::QAB1(B)
      • P(i);SBLOCK::S(E)
HTML5 logo

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).