MESON Chess Problem Database

Problem Display
PID: 16856 (1Q2N3/3pP3/4kB1N/n2rp3/K1R3P1/bB6/p7/q7 w - - 0 1)

Mansfield, Comins

Adventures in Composition, 1944

1Q2N3/3pP3/4kB1N/n2rp3/K1R3P1/bB6/p7/q7

#2

9 + 8

3550 Complete Mansfield/II 1997

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rc6#
    • 1...Rd2
      • 2.Rc6#
    • 1...Rd3
      • 2.Rc6#
    • 1...Rd4
      • 2.Qxe5#
    • 1...Rb5
      • 2.Rc6#
    • 1...Rc5
      • 2.Qd6#
    • 1...d6
      • 2.Qc8#
  • Tries
    • 1.Sc7+?
      • 1...Kd6
        • 2.Sf5#
        • 2.Sf7#
        • 2.e8S#
      • 1...Kxf6!
    • 1.Rc6+?
      • 1...Bd6
        • 2.Rxd6#
        • 2.Qxd6#
      • 1...dxc6
        • 2.Qc8#
      • 1...d6
        • 2.Qc8#
      • 1...Sxc6!
    • 1.Qxe5+?
      • 1...Rxe5
        • 2.Rc6#
      • 1...Qxe5!
  • Keys
    • 1.g5!
      • threat
        • 2.Sg7#
      • 1...Rd1
        • 2.Rc6#
      • 1...Rd2
        • 2.Rc6#
      • 1...Rd3
        • 2.Rc6#
      • 1...Rd4
        • 2.Qxe5#
      • 1...Rb5
        • 2.Rc6#
      • 1...Rc5
        • 2.Qd6#
      • 1...Rd6
        • 2.Sc7#
      • 1...d6
        • 2.Qc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(e);::B(A)+R(C),DCHECK
    • R(e);N_GUARD,P_PINR(C),S_CUTQ(a)::QAR1(H),XP(f)
    • R(e);N_GUARD,S_CUTB(c)::QAR1(H)
    • P(h);OGATEB::QAB(H)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • K(g);P-FLIGHT,XB(E)
    • Try
      • R(C);CHECK,P_PINR(e)
      • Vars
        • P(h);S_CUTB(c),S_CUTS(d),XR(C)::QAB(H)
        • P(h);P_SPINP(h),S_CUTB(c),S_CUTS(d)::QAB(H)
      • Refutation
        • S(d);XR(C)
    • Try
      • Q(H);CHECK,XP(f)
      • Vars
        • R(e);XQ(H)::B(A)+R(C),DCHECK
      • Refutation
        • Q(a);XQ(H)
  • Actual
    • P(D);
    • Threat
      • S(I)
    • Vars
      • R(e);::B(A)+R(C),DCHECK
      • R(e);N_GUARD,P_PINR(C),S_CUTQ(a)::QAR1(H),XP(f)
      • R(e);N_GUARD,S_CUTB(c)::QAR1(H)
      • R(e);SBLOCK::S(I)
      • P(h);OGATEB::QAB(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).