MESON Chess Problem Database

Problem Display
PID: 190157 (5R2/BQb5/2KP3N/p3P3/R1nrk3/6P1/1prpP3/1B1N4 w - - 0 1)

Janet, Frank

Richmond Advance, 1913

5R2/BQb5/2KP3N/p3P3/R1nrk3/6P1/1prpP3/1B1N4

#2

12 + 8

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Kc5+?
      • 1...Rd5+
        • 2.Qxd5#
      • 1...Kxe5!
    • 1.Kd7+?
      • 1...Kxe5
        • 2.Rf5#
      • 1...Rd5!
    • 1.Sc3+?
      • 1...Ke3
        • 2.Sg4#
        • 2.Rf3#
      • 1...Kxe5!
  • Keys
    • 1.Re8!
      • 1...Rxd6+
        • 2.exd6#
      • 1...Sa3+
        • 2.Kd7#
      • 1...Se3+
        • 2.Sc3#
      • 1...Sxe5+
        • 2.Kb5#
      • 1...Sb6+
        • 2.Bxc2#
      • 1...Sxd6+
        • 2.Bxc2#
      • 1...Bxd6
        • 2.Qh7#
      • 1...Rd5
        • 2.Sf2#
        • 2.Sc3#
      • 1...Rd3
        • 2.Sf2#
      • 1...Bb6
        • 2.Qh7#
      • 1...Bb8
        • 2.Qh7#
      • 1...Bd8
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 11
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(G);CHECK,P-FLIGHT
      • Vars
        • R(e);CHECK,N_GUARD,P_SPINS(d)::QAB1(K),XR(e)
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT,XP(F)
    • Try
      • K(G);CHECK,P_SPINP(H),S_FLIGHT
      • Vars
        • K(f);N_SPINR(b),P-FLIGHT,XP(F)::R1(L)
      • Refutation
        • R(e);P_SPINS(d)
    • Try
      • S(B);CHECK
      • Refutation
        • K(f);N_SPINR(b),P-FLIGHT,XP(F)
  • Actual
    • R(L);
    • Vars
      • R(e);CHECK,OGATE,P_SPINS(d),XP(H)::R(L)+P(F),XR(e)
      • S(d);CHECK,S_CUTR(e)::QAB(K)+K(G)
      • S(d);CHECK,SBLOCK::S(B)
      • S(d);CHECK,P_SPINS(d),S_CUTR(e),XP(F)::QAB(K)+K(G)
      • S(d);CHECK,S_CUTR(e)::B(A),XR(b)
      • S(d);CHECK,S_CUTR(e),XP(H)::B(A),XR(b)
      • B(h);OGATE,XP(H)::QAB(K)
      • R(e);N_SPINR(b),P_SPINS(d)::S(B)
      • B(h);OGATE::QAB(K)
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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).