MESON Chess Problem Database

Problem Display
PID: 201703 (1b6/1B1Np2n/RK2k1P1/PQR1Pp2/1rp2n2/2r5/qB6/8 w - - 0 1)

Dalton, William Robert Inge

Brisbane Courier, 1922

1b6/1B1Np2n/RK2k1P1/PQR1Pp2/1rp2n2/2r5/qB6/8

#2

10 + 10

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ba7+
      • 2.Kxa7#
    • 1...Bc7+
      • 2.Kxc7#
    • 1...Se2
      • 2.Bd5#
    • 1...Sg2
      • 2.Bd5#
    • 1...Sd3
      • 2.Bd5#
    • 1...Sh3
      • 2.Bd5#
    • 1...Sd5+
      • 2.Bxd5#
    • 1...Sh5
      • 2.Bd5#
    • 1...Sxg6
      • 2.Bd5#
    • 1...Sg5
      • 2.Sf8#
    • 1...Sf6
      • 2.Sf8#
    • 1...Sf8
      • 2.Sxf8#
  • Tries
    • 1.Rc6+?
      • 1...Kxd7
        • 2.Rd6#
      • 1...Bd6!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Kc5#
      • 1...Qxa5+
        • 2.Kxa5#
      • 1...Rxb5+
        • 2.Kxb5#
      • 1...Ba7+
        • 2.Kxa7#
      • 1...Bxc7+
        • 2.Kxc7#
      • 1...Sd5+
        • 2.Bxd5#
      • 1...Sxg6
        • 2.Bd5#
      • 1...Rd3
        • 2.Sc5#
      • 1...Sd3
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • B(j);CHECK::R(F)+K(G),XB(j)
    • S(e);N_GUARD::B(I)
    • S(e);CHECK,N_GUARD::B(I),XS(e)
    • S(e);N_GUARD,XP(H)::B(I)
    • S(i);N_GUARD::S(J)
    • S(i);N_GUARD::S(J),XS(i)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • K(g);S_FLIGHT,XS(J)::QAB(C)+R(D),DCHECK
      • Refutation
        • B(j);P_SPINB(j)
  • Actual
    • R(D);
    • Threat
      • R(F)+K(G)
    • Vars
      • Q(a);CHECK,XP(B)::R(F)+K(G),XQ(a)
      • R(c);CHECK,XQ(C)::R(F)+K(G),XR(c)
      • B(j);CHECK::R(F)+K(G),XB(j)
      • B(j);CHECK,XR(D)::R(F)+K(G),XB(j)
      • S(e);CHECK,N_GUARD::B(I),XS(e)
      • S(e);N_GUARD,XP(H)::B(I)
      • R(b);::S(J)
      • S(e);N_GUARD::B(I)
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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).