MESON Chess Problem Database

Problem Display
PID: 68995 (b1RK2N1/5P2/5r2/PN1k1p2/1P3Q2/n7/6pr/5B2 w - - 0 1)

Anonymous

BCA Ty., 1873

b1RK2N1/5P2/5r2/PN1k1p2/1P3Q2/n7/6pr/5B2

#2

9 + 7

5923 The Chess Player's Chronicle (Sampson) 1873
15239 Valois Notebooks 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra6
      • 2.Qxf5#
    • 1...Rb6
      • 2.Qxf5#
    • 1...Rc6
      • 2.Qxf5#
    • 1...Re6
      • 2.Sc3#
      • 2.Rc5#
      • 2.Qd4#
    • 1...Rg6
      • 2.Qxf5#
    • 1...Rh6
      • 2.Qxf5#
    • 1...Bc6
      • 2.Sc7#
    • 1...Sb1
      • 2.Bc4#
    • 1...Sc2
      • 2.Bc4#
    • 1...Sc4
      • 2.Bxc4#
    • 1...Sxb5
      • 2.Bc4#
  • Tries
    • 1.Sd4?
      • threat
        • 2.Sxf6#
        • 2.Se7#
        • 2.Rc5#
      • 1...Rxf7
        • 2.Rc5#
      • 1...Rhh6
        • 2.Se7#
        • 2.Bxg2#
        • 2.Rc5#
      • 1...Rh8
        • 2.Bxg2#
        • 2.Rc5#
      • 1...Ra6
        • 2.Se7#
        • 2.Rc5#
      • 1...Rb6
        • 2.Se7#
        • 2.Rc5#
      • 1...Rc6
        • 2.Se7#
      • 1...Re6
        • 2.Rc5#
      • 1...Rg6
        • 2.Se7#
        • 2.Rc5#
      • 1...Rfh6
        • 2.Se7#
        • 2.Rc5#
      • 1...Bc6
        • 2.Sxf6#
        • 2.Se7#
      • 1...Rd6+!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Se7#
      • 1...Rd6+
        • 2.Rxd6#
      • 1...Kxc6
        • 2.Qf3#
      • 1...Rxc6
        • 2.Qxf5#
      • 1...Rxf7
        • 2.Rd6#
      • 1...Bxc6
        • 2.Sc7#
      • 1...Rh8
        • 2.Bxg2#
      • 1...Re6
        • 2.Rc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 8
  • Sets
    • R(f);N_GUARD::QAR2(C),XP(e)
    • B(g);SBLOCK::S(E)
    • S(c);N_GUARD::B(A)
    • S(c);N_GUARD::B(A),XS(c)
    • S(c);N_GUARD,XS(E)::B(A)
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • R(f);XP(F)::R1(G)
        • R(f);::S(I)
        • R(f);::R1(G)
      • Refutation
        • R(f);CHECK
  • Actual
    • R(G);
    • Threat
      • S(I)
    • Vars
      • R(f);CHECK,N_GUARD::R1(G),XR(f)
      • K(d);S_FLIGHT,XR(G)::QAB(C)
      • R(f);N_GUARD,SBLOCK,XR(G)::QAR2(C),XP(e)
      • R(f);N_GUARD,XP(F)::R1(G)
      • B(g);SBLOCK,XR(G)::S(E)
      • R(b);N_GUARD,P_PINS(I)::B(A),XP(a)
      • R(f);SBLOCK::R1(G)
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).