MESON Chess Problem Database

Problem Display
PID: 148303 (n2N4/p7/k7/pq1N4/3R3K/8/8/5B2 w - - 0 1)

Mendes de Moraes Filho, Feliciano

Surrey Weekly Press, 1922

(First published on Fri Jan 27 1922)

n2N4/p7/k7/pq1N4/3R3K/8/8/5B2

#2

5 + 5

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Bxe2#
    • 1...Qd3
      • 2.Bxd3#
    • 1...Qc4
      • 2.Bxc4#
    • 1...Sb6
      • 2.Sc7#
    • 1...a4
      • 2.Rxa4#
  • Tries
    • 1.Sc7+?
      • 1...Sxc7
        • 2.Rd6#
      • 1...Kb6!
  • Keys
    • 1.Rc4!
      • 1...Qxc4+
        • 2.Bxc4#
      • 1...Qxd5
        • 2.Rc6#
      • 1...Qa4
        • 2.Rxa4#
      • 1...Qc6
        • 2.Rxc6#
      • 1...Qd7
        • 2.Rc6#
      • 1...Qe8
        • 2.Rc6#
      • 1...Qb1
        • 2.Rc6#
      • 1...Qb2
        • 2.Rc6#
      • 1...Qb3
        • 2.Rc6#
      • 1...Qb4
        • 2.Rxb4#
      • 1...Qc5
        • 2.Rxc5#
      • 1...Qb6
        • 2.Rc6#
      • 1...Qb7
        • 2.Rc6#
      • 1...Qb8
        • 2.Rc6#
      • 1...a4
        • 2.Rxa4#
      • 1...Sc7
        • 2.Rc6#
      • 1...Sb6
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 14
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATEB::B(A),XQ(b)
    • Q(b);OGATEB,P_PINR(B)::B(A),XQ(b)
    • S(e);N_GUARD,SBLOCK::S(D)
    • P(a);OGATEB::R(B),XP(a)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • S(e);XS(D)::R(B)
      • Refutation
        • K(c);N_SPINQ(b),P-FLIGHT
  • Actual
    • R(B);N_PINQ(b)
    • Vars
      • Q(b);CHECK,OGATE,P_SPINQ(b),XR(B)::B(A),XQ(b)
      • Q(b);XS(D)::B(A)+R(B),DCHECK
      • Q(b);OGATEB,P_PINR(B)::B(A)+R(B),XQ(b)
      • Q(b);::B(A)+R(B),DCHECK,XQ(b)
      • Q(b);::B(A)+R(B),DCHECK
      • Q(b);OGATEB::B(A)+R(B),XQ(b)
      • Q(b);S_CUTS(e)::B(A)+R(B)
      • P(a);OGATEB::R(B),XP(a)
      • S(e);N_GUARD::R(B)
      • S(e);N_GUARD,SBLOCK::S(D)
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).