MESON Chess Problem Database

Problem Display
PID: 103726 (7K/8/N3p3/3pk3/5NQP/2p5/2Pn2n1/3R2B1 w - - 0 1)

Rowland, Thomas B

Brooklyn Chess Chronicle, 1883

7K/8/N3p3/3pk3/5NQP/2p5/2Pn2n1/3R2B1

#2

8 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.Qxe6#
    • 1...Kf6
      • 2.Qxe6#
  • Tries
    • 1.Bd4+?
      • 1...Ke4
        • 2.Sxg2#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Kxd4!
  • Keys
    • 1.Bh2!
      • 1...Kd4
        • 2.Sxg2#
      • 1...Ke4
        • 2.Sxg2#
      • 1...Kd6
        • 2.Qxe6#
      • 1...Kf6
        • 2.Qxe6#
      • 1...Sxf4
        • 2.Qxf4#
      • 1...Sxh4
        • 2.Sh5#
      • 1...Sb1
        • 2.Qxe6#
      • 1...Sf1
        • 2.Qxe6#
      • 1...Sb3
        • 2.Qxe6#
      • 1...Sf3
        • 2.Qxe6#
      • 1...Sc4
        • 2.Qxe6#
      • 1...Se4
        • 2.Qxe6#
      • 1...Se1
        • 2.Sh5#
      • 1...Se3
        • 2.Sh5#
      • 1...d4
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • K(e);S_FLIGHT::QAR1(E),XP(f)
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR(E)+S(D),XS(b)
        • K(e);S_FLIGHT::QAR1(E),XP(f)
      • Refutation
        • K(e);P_SPINS(a),S_FLIGHT,XB(B)
  • Actual
    • B(B);
    • Vars
      • K(e);P_SPINS(a),S_FLIGHT::QAR(E)+S(D),XS(b)
      • K(e);P-FLIGHT::QAR(E)+S(D),XS(b)
      • K(e);S_FLIGHT::QAR1(E),XP(f)
      • S(b);OGATE,P_SPINS(b),XS(D)::QAB1(E),XS(b)
      • S(b);N_GUARD,XP(F)::B(B)+S(D)
      • S(a);::QAR1(E),XP(f)
      • S(a);SBLOCK::QAR1(E),XP(f)
      • S(b);N_GUARD::B(B)+S(D)
      • P(d);SBLOCK::QAR1(E),XP(f)
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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).