MESON Chess Problem Database

Problem Display
PID: 222610 (3N4/2P1k3/1P3N2/p5K1/1b3P2/2P1B3/3P4/3Q4 w - - 0 1)

Rowland, Thomas B

Chess Fruits, 1884

3N4/2P1k3/1P3N2/p5K1/1b3P2/2P1B3/3P4/3Q4

#2

10 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.c8S#
    • 1...Bxc3
      • 2.Bc5#
    • 1...Bc5
      • 2.Bxc5#
  • Tries
    • 1.Qa4?
      • 1...Kd6
        • 2.Qd7#
        • 2.c8S#
      • 1...Bxc3
        • 2.Bc5#
      • 1...Ba3
        • 2.Qxa3#
      • 1...Bc5
        • 2.Bxc5#
      • 1...Bd6
        • 2.Qe8#
      • 1...Kf8!
    • 1.cxb4?
      • threat
        • 2.Bc5#
      • 1...Kd6
        • 2.Bc5#
        • 2.c8S#
      • 1...Kf8!
  • Keys
    • 1.Qb3!
      • 1...Kd6
        • 2.Qe6#
        • 2.c8S#
      • 1...Kf8
        • 2.Qf7#
      • 1...Bxc3
        • 2.Bc5#
      • 1...Ba3
        • 2.Qxa3#
      • 1...Bc5
        • 2.Bxc5#
      • 1...Bd6
        • 2.Qf7#
      • 1...a4
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(c);S_FLIGHT::P=S
    • B(a);N_GUARD,XP(C)::B(D)
    • B(a);N_GUARD::B(D),XB(a)
  • Tries
    • Try
      • Q(A);
      • Vars
        • B(a);N_GUARD,XP(C)::B(D)
        • B(a);OGATEB::QAB(A),XB(a)
        • B(a);N_GUARD::B(D),XB(a)
        • B(a);SBLOCK::QAR1(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(C);XB(a)
      • Threat
        • B(D)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::QAR1(A)
      • B(a);N_GUARD,XP(C)::B(D)
      • B(a);OGATEB::QAB(A),XB(a)
      • B(a);N_GUARD::B(D),XB(a)
      • B(a);SBLOCK::QAR1(A)
      • P(b);N_GUARD::QAB(A),XB(a)
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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).