MESON Chess Problem Database

Problem Display
PID: 223130 (4b3/1BB1p3/1Rq1k2N/4P2R/5p2/QP3N2/8/7K w - - 0 1)

Holladay, Edgar Dinwiddie

US Problem Bulletin, 1965

4b3/1BB1p3/1Rq1k2N/4P2R/5p2/QP3N2/8/7K

#2

10 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Rxc6+?
      • 1...Kd5
        • 2.Rd6#
      • 1...Kd7
        • 2.e6#
      • 1...Bxc6!
    • 1.Qc5?
      • 1...Kd7
        • 2.Qxc6#
      • 1...Qxb6
        • 2.Qd5#
      • 1...Bxh5
        • 2.Bc8#
        • 2.Qxc6#
      • 1...Bg6
        • 2.Bc8#
        • 2.Qxc6#
      • 1...Bd7
        • 2.Qc4#
      • 1...Bf7
        • 2.Bc8#
        • 2.Qxc6#
      • 1...Qd6!
  • Keys
    • 1.Qa4!
      • 1...Kd5
        • 2.Qc4#
      • 1...Kd7
        • 2.Qxc6#
      • 1...Qxb6
        • 2.Sg5#
      • 1...Bxh5
        • 2.Qxc6#
      • 1...Qd6
        • 2.Sd4#
      • 1...Bg6
        • 2.Qxc6#
      • 1...Bd7
        • 2.Qc4#
      • 1...Bf7
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(G);CHECK,N_SPINS(D),XQ(b)
      • Vars
        • K(c);S_FLIGHT::B(I)+R(G),DCHECK
        • K(c);OGATE,S_FLIGHT::P(E)
      • Refutation
        • B(e);P_PINS(D),XR(G)
    • Try
      • Q(B);
      • Vars
        • K(c);N_SPINQ(b),S_FLIGHT::QAB1(B),XQ(b)
        • Q(b);N_PINS(D),N_SPINQ(b),XR(G)::QAB1(B)
        • B(e);SBLOCK::QAB(B)
      • Refutation
        • Q(b);N_PINS(D)
  • Actual
    • Q(B);
    • Vars
      • K(c);N_PINS(D),S_FLIGHT::QAB1(B)
      • K(c);S_FLIGHT::QAB1(B),XQ(b)
      • Q(b);N_PINS(D),N_SPINQ(b),XR(G)::S(D)
      • B(e);N_GUARD,XR(F)::QAR2(B),XQ(b)
      • Q(b);N_PINS(D)::S(D)
      • B(e);N_GUARD::QAR2(B),XQ(b)
      • B(e);SBLOCK::QAB(B)
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).