MESON Chess Problem Database

Problem Display
PID: 222693 (1b1r1qb1/8/2R3NQ/1P1kr3/Kp1pp2P/p6n/PP6/2R4B w - - 0 1)

Sweeney, Maude Gertrude

Cincinnati Commercial, 1884

1b1r1qb1/8/2R3NQ/1P1kr3/Kp1pp2P/p6n/PP6/2R4B

#2

10 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qc5
      • 2.R1xc5#
    • 1...Qxh6
      • 2.R1c5#
    • 1...Qg7
      • 2.R1c5#
    • 1...Qf1
      • 2.R1c5#
    • 1...Qf2
      • 2.R1c5#
    • 1...Qf3
      • 2.R1c5#
    • 1...Qf4
      • 2.R1c5#
    • 1...Qf5
      • 2.R1c5#
    • 1...Qf6
      • 2.R1c5#
    • 1...Qf7
      • 2.R1c5#
    • 1...Qe8
      • 2.R1c5#
    • 1...Re7
      • 2.R1c5#
  • Tries
    • 1.Sf4+?
      • 1...Qxf4
        • 2.R1c5#
        • 2.R6c5#
      • 1...Sxf4!
    • 1.Se7+?
      • 1...Rxe7
        • 2.R1c5#
        • 2.R6c5#
      • 1...Qxe7!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qb3#
      • 1...dxe3
        • 2.Rd1#
      • 1...Qc5
        • 2.R1xc5#
      • 1...Qf1
        • 2.R1c5#
      • 1...Qf3
        • 2.R1c5#
      • 1...b3
        • 2.Qxb3#
      • 1...d3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 9
  • Sets
    • Q(j);N_GUARD::R1(A),XQ(j)
    • Q(j);N_GUARD,XQ(J)::R1(A)
    • Q(j);N_GUARD::R1(A)
    • Q(j);N_GUARD,N_SPINP(e)::R1(A)
    • R(g);S_CUTQ(j)::R1(A)
  • Tries
    • Try
      • S(I);CHECK
      • Refutation
        • S(b);XS(I)
    • Try
      • S(I);CHECK
      • Refutation
        • Q(j);XS(I)
  • Actual
    • Q(J);
    • Threat
      • QAB(J)
    • Vars
      • P(d);OGATEB,XQ(J)::R(A)
      • Q(j);N_GUARD::R1(A),XQ(j)
      • Q(j);N_GUARD::R1(A)
      • Q(j);N_GUARD,N_SPINP(e)::R1(A)
      • P(c);::QAB(J),XP(c)
      • P(d);OGATEB::QAR2(J),XP(d)
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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).