MESON Chess Problem Database

Problem Display
PID: 44387 (4N3/2p5/2KPp3/4pN2/4k1p1/5nP1/3BB3/4R1nQ w - - 0 1)

Gilberg, Charles Alexander

Source?, 0000

4N3/2p5/2KPp3/4pN2/4k1p1/5nP1/3BB3/4R1nQ

#2

9 + 7

176 Crumbs from the Chess-board 1890

SOLUTION

  • SOUND
  • Sets
    • 1...Kxf5
      • 2.Qh7#
    • 1...cxd6
      • 2.Sexd6#
  • Tries
    • 1.Bd1+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Se2
        • 2.Bc2#
      • 1...Kd3!
    • 1.Bf1+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Se2!
    • 1.Bxf3+?
      • 1...Kxf5
        • 2.Be4#
        • 2.Qh5#
        • 2.Qh7#
      • 1...Kd3!
    • 1.Bc4+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Se2!
    • 1.Bb5+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Se2!
    • 1.Ba6+?
      • 1...Kxf5
        • 2.Qh7#
      • 1...Se2!
    • 1.Rxg1?
      • 1...Kxf5
        • 2.Qh7#
      • 1...cxd6
        • 2.Sexd6#
      • 1...exf5!
  • Keys
    • 1.Ra1!
      • 1...Kxf5
        • 2.Qh7#
      • 1...Sxe2
        • 2.Qb1#
      • 1...exf5
        • 2.Ra4#
      • 1...cxd6
        • 2.Sexd6#
      • 1...Sh3
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);N_SPINS(b),OGATEB,S_FLIGHT,XS(F)::QAB(B)
    • P(g);XP(H)::S(I),XP(g)
  • Tries
    • Try
      • B(D);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(B)
        • S(a);N_SPINS(b),P_SPINS(a)::B(D)
      • Refutation
        • K(c);N_SPINS(b),S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(B)
      • Refutation
        • S(a);N_SPINS(b),P_SPINS(a)
    • Try
      • B(D);CHECK,XS(b)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(B)
      • Refutation
        • S(a);N_SPINS(b),P_SPINS(a)
    • Try
      • B(D);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(B)
      • Refutation
        • S(a);N_SPINS(b),P_SPINS(a)
    • Try
      • B(D);CHECK
      • Vars
        • K(c);N_SPINS(b),S_FLIGHT,XS(F)::QAB(B)
      • Refutation
        • S(a);N_SPINS(b),P_SPINS(a)
    • Try
      • R(A);XS(a)
      • Vars
        • K(c);N_SPINS(b),OGATEB,S_FLIGHT,XS(F)::QAB(B)
        • P(g);XP(H)::S(I),XP(g)
      • Refutation
        • P(f);XS(F)
  • Actual
    • R(A);
    • Vars
      • K(c);N_SPINS(b),OGATEB,S_FLIGHT,XS(F)::QAB(B)
      • S(a);OGATE,XB(D)::QAB(B)
      • P(f);SBLOCK,XS(F)::R(A)
      • P(g);XP(H)::S(I),XP(g)
      • S(a);OGATE::QAB(B)
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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).