MESON Chess Problem Database

Problem Display
PID: 60265 (2R3nK/3B4/R4B1p/1N1k1b2/Q4q1r/4r3/2Pn4/8 w - - 0 1)

Loyd, Sam

New York Graphic, 0000

2R3nK/3B4/R4B1p/1N1k1b2/Q4q1r/4r3/2Pn4/8

#2

8 + 8

5206 Sam Loyd and His Chess Problems 1913

SOLUTION

  • SOUND
  • Sets
    • 1...Qg5
      • 2.Rd6#
    • 1...Qd6
      • 2.Rxd6#
    • 1...Qf1
      • 2.Rd6#
    • 1...Qf2
      • 2.Rd6#
    • 1...Qf3
      • 2.Rd6#
    • 1...Qe4
      • 2.Rd6#
    • 1...Qg4
      • 2.Rd6#
    • 1...Re1
      • 2.Sc3#
    • 1...Re2
      • 2.Sc3#
    • 1...Rc3
      • 2.Sxc3#
    • 1...Re4
      • 2.Sc3#
    • 1...Re5
      • 2.Sc3#
      • 2.Rd6#
    • 1...Re6
      • 2.Sc3#
    • 1...Re7
      • 2.Sc3#
    • 1...Re8
      • 2.Sc3#
    • 1...Bd3
      • 2.Sc3#
    • 1...Be4
      • 2.Be6#
      • 2.Qd4#
    • 1...Se4
      • 2.Qc4#
      • 2.Qd4#
      • 2.c4#
  • Tries
    • 1.Sc7+?
      • 1...Kc5
        • 2.Rc6#
        • 2.Qb5#
      • 1...Qxc7!
    • 1.Be6+?
      • 1...Rxe6
        • 2.Sc3#
      • 1...Bxe6!
  • Keys
    • 1.Qe4+!
      • 1...Kxe4
        • 2.Bc6#
      • 1...Qxe4
        • 2.Rd6#
      • 1...Rxe4
        • 2.Sc3#
      • 1...Bxe4
        • 2.Be6#
      • 1...Sxe4
        • 2.c4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 13
  • Sets
    • Q(c);N_GUARD::R1(D)
    • Q(c);N_GUARD::R1(D),XQ(c)
    • R(b);N_GUARD::S(C)
    • R(b);N_GUARD::S(C),XR(b)
    • B(f);S_CUTR(b)::S(C)
  • Tries
    • Try
      • S(C);CHECK
      • Refutation
        • Q(c);XS(C)
    • Try
      • B(F);CHECK
      • Vars
        • R(b);XB(F)::S(C)
      • Refutation
        • B(f);XB(F)
  • Actual
    • Q(B);CHECK
    • Vars
      • K(e);S_FLIGHT,XQ(B)::B(F)
      • Q(c);SBLOCK,XQ(B)::R1(D)
      • R(b);XQ(B)::S(C)
      • B(f);SBLOCK,XQ(B)::B(F)
      • S(a);SBLOCK,XQ(B)::P(A)
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).