MESON Chess Problem Database

Problem Display
PID: 18985 (3Q4/K1R5/4pP2/2N1k3/2P1prpN/8/2n1R2p/1b3nbq w - - 0 1)

Chandler, Guy Wills

Chess Amateur (The), 1911

3Q4/K1R5/4pP2/2N1k3/2P1prpN/8/2n1R2p/1b3nbq

#2

8 + 11

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Sd3#
    • 1...Rf3
      • 2.Rxe4#
    • 1...Rf5
      • 2.Sg6#
    • 1...Bxc5+
      • 2.Rxc5#
  • Tries
    • 1.Qd6+?
      • 1...Kxf6
        • 2.Qxf4#
      • 1...Kxd6!
  • Keys
    • 1.Rc6!
      • threat
        • 2.Rxe6#
      • 1...Bxc5+
        • 2.Rxc5#
      • 1...Rxf6
        • 2.Qd6#
      • 1...Rf2
        • 2.Sd3#
      • 1...Rf3
        • 2.Rxe4#
      • 1...Rf5
        • 2.Sg6#
      • 1...Sd4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(h);N_PINS(D)::S(D)
    • R(h);N_GUARD,S_CUTQ(d)::R1(A),XP(g)
    • R(h);SBLOCK::S(C)
    • B(c);CHECK,OGATE,XS(D)::R(G),XB(c)
  • Tries
    • Try
      • Q(H);CHECK
      • Vars
        • K(j);N_SPINP(g),OGATE,P_SPINP(k),S_FLIGHT,XP(E)::QAR2(H),XR(h)
      • Refutation
        • K(j);N_SPINP(g),S_FLIGHT,XQ(H)
  • Actual
    • R(G);
    • Threat
      • R1(G),XP(k)
    • Vars
      • B(c);CHECK,OGATE,XS(D)::R(G),XB(c)
      • R(h);SBLOCK,XP(E)::QAB1(H)
      • R(h);N_PINS(D)::S(D)
      • R(h);N_GUARD,S_CUTQ(d)::R1(A),XP(g)
      • R(h);SBLOCK::S(C)
      • S(e);N_PINS(D),SBLOCK::S(D)
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).