MESON Chess Problem Database

Problem Display
PID: 66240 (1b5n/3pN3/Kp5Q/4R3/2pk1p2/7n/bP1pr3/4NB2 w - - 0 1)

Anonymous

The Chess Monthly (Hoffer), 1881

1b5n/3pN3/Kp5Q/4R3/2pk1p2/7n/bP1pr3/4NB2

#2

7 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rg2
      • 2.Sf3#
    • 1...Rh2
      • 2.Sf3#
    • 1...Bd6
      • 2.Qxd6#
    • 1...Ba7
      • 2.Qd6#
    • 1...d6
      • 2.Sc6#
  • Tries
    • 1.Qxf4+?
      • 1...Re4
        • 2.Sc2#
        • 2.Sf3#
        • 2.Sf5#
        • 2.Rd5#
        • 2.Qxe4#
      • 1...Sxf4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qd5#
      • 1...Kxe5
        • 2.Sf3#
      • 1...Rxe5
        • 2.Sc2#
      • 1...Bxe5
        • 2.Sf5#
      • 1...dxc6
        • 2.Sxc6#
      • 1...Re4
        • 2.Rxe4#
        • 2.Qxe4#
      • 1...c3
        • 2.Qxc3#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 5
  • Sets
    • R(c);::S(A)
    • B(j);N_GUARD::QAR2(F),XB(j)
    • B(j);N_GUARD::QAR2(F)
    • P(i);N_GUARD::S(G)
  • Tries
    • Try
      • Q(F);CHECK,XP(g)
      • Refutation
        • S(d);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(f);S_FLIGHT,XR(D)::S(A)
      • R(c);SBLOCK,XR(D)::S(A)
      • B(j);SBLOCK,XR(D)::S(G)
      • P(i);XQ(F)::S(G),XP(i)
      • P(e);OGATE::QAB1(F),XP(e)
      • P(i);::QAR1(F),XP(i)
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).