MESON Chess Problem Database

Problem Display
PID: 208086 (8/B1K5/8/2n3P1/3kN1BQ/4R1NR/2P5/8 w - - 0 1)

Romeyn, John C

Watertown (New York) Re-Union, 1874

8/B1K5/8/2n3P1/3kN1BQ/4R1NR/2P5/8

#2

10 + 2

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kc4
        • 2.Be2#
        • 2.Be6#
      • 1...Kxe3!
    • 1.Sf6?
      • 1...Kc4
        • 2.Be2#
      • 1...Kxe3!
    • 1.Be2?
      • 1...Kxe3
        • 2.Bxc5#
      • 1...Kd5
        • 2.Sc3#
        • 2.Sf6#
      • 1...Ke5!
    • 1.Be6?
      • 1...Ke5
        • 2.Sxc5#
      • 1...Kxe3!
  • Keys
    • 1.Bf3!
      • 1...Kxe3
        • 2.Sf5#
      • 1...Kc4
        • 2.Sd6#
      • 1...Kd5
        • 2.Sc3#
        • 2.Sxc5#
        • 2.Sf6#
      • 1...Ke5
        • 2.Sxc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • S(E);
      • Vars
        • K(a);N_SPINS(b),P-FLIGHT::QAR(G)+B(F),DCHECK
      • Refutation
        • K(a);S_FLIGHT,XR(B)
    • Try
      • B(F);
      • Vars
        • K(a);S_FLIGHT,XR(B)::B(I),XS(b)
      • Refutation
        • K(a);N_SPINS(b),S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(a);N_SPINS(b),S_FLIGHT::R(B)+S(E),XS(b)
      • Refutation
        • K(a);S_FLIGHT,XR(B)
  • Actual
    • B(F);
    • Vars
      • K(a);S_FLIGHT,XR(B)::S(C)
      • K(a);N_SPINS(b),P-FLIGHT::QAR(G)+S(E),DCHECK
      • K(a);N_SPINS(b),S_FLIGHT::R(B)+S(E),XS(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).