MESON Chess Problem Database

Problem Display
PID: 208755 (r3R1K1/1BNp4/pP1k2pB/pP1PN3/2pP4/1n6/6r1/1Q2nq2 w - - 0 1)

Ramsey, Robert Henry

Dubuque Chess Journal, 1875

r3R1K1/1BNp4/pP1k2pB/pP1PN3/2pP4/1n6/6r1/1Q2nq2

#2

11 + 11

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Qe2
      • 2.Sf7#
      • 2.Bf8#
    • 1...Qd3
      • 2.Sf7#
      • 2.Bf8#
    • 1...Qg1
      • 2.Sxc4#
      • 2.Sf7#
      • 2.Bf8#
    • 1...Qh1
      • 2.Sxc4#
      • 2.Sf7#
      • 2.Bf8#
    • 1...Qf2
      • 2.Sxc4#
    • 1...Qf3
      • 2.Sxc4#
    • 1...Qf4
      • 2.Sxc4#
    • 1...Qf5
      • 2.Sxc4#
    • 1...Qf6
      • 2.Sxc4#
    • 1...Qf7+
      • 2.Sxf7#
    • 1...Qf8+
      • 2.Bxf8#
    • 1...Re2
      • 2.Sxc4#
    • 1...Sd3
      • 2.Sxc4#
    • 1...Sf3
      • 2.Sf7#
      • 2.Bf8#
    • 1...axb5
      • 2.Sxb5#
  • Tries
    • 1.Qxg6+?
      • 1...Qf6
        • 2.Sxc4#
        • 2.Sf7#
        • 2.Bf8#
      • 1...Rxg6+!
  • Keys
    • 1.Sxc4+!
      • 1...Qxc4
        • 2.Bf4#
        • 2.Bf8#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 10
  • Sets
    • Q(b);N_GUARD::S(E),XP(e)
    • Q(b);CHECK,N_GUARD::S(E),XQ(b)
    • Q(b);CHECK,N_GUARD,N_PINR(J)::B(G),XQ(b)
    • R(c);S_CUTQ(b)::S(E),XP(e)
    • S(a);S_CUTQ(b)::S(E),XP(e)
    • P(g);XP(C)::S(I),XP(g)
  • Tries
    • Try
      • Q(A);CHECK,P_SPINQ(A),XP(i)
      • Refutation
        • R(c);CHECK,XQ(A)
  • Actual
    • S(E);CHECK,XP(e)
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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).