MESON Chess Problem Database

Problem Display
PID: 197131 (2br4/1p4p1/1p4R1/1p3p2/1N1kNB2/2R1p3/1K2P2n/1B6 w - - 0 1)

Umari, Basil

StrateGems, 2019

2br4/1p4p1/1p4R1/1p3p2/1N1kNB2/2R1p3/1K2P2n/1B6

#2

8 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Rxd6#
    • 1...Re8
      • 2.Rd6#
    • 1...Rf8
      • 2.Rd6#
    • 1...Rg8
      • 2.Rd6#
    • 1...Rh8
      • 2.Rd6#
    • 1...Bd7
      • 2.Rd6#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Sb3#
      • 1...exd2
        • 2.e3#
      • 1...Be6!
    • 1.Sc5?
      • threat
        • 2.Sb3#
      • 1...Be6
        • 2.Sxe6#
      • 1...bxc5!
    • 1.Sd6?
      • threat
        • 2.Sxb5#
      • 1...Rxd6
        • 2.Rxd6#
      • 1...Bd7!
  • Keys
    • 1.Sg5!
      • 1...Rd5
        • 2.Sc2#
      • 1...Rd6
        • 2.Rxd6#
      • 1...Rd7
        • 2.Se6#
      • 1...Re8
        • 2.Rd6#
      • 1...Rf8
        • 2.Rd6#
      • 1...Rg8
        • 2.Rd6#
      • 1...Rh8
        • 2.Rd6#
      • 1...Be6
        • 2.Sxe6#
      • 1...Bd7
        • 2.Rd6#
      • 1...Sf1
        • 2.Sf3#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Sg4
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(j);N_GUARD::R(H),XR(j)
    • R(j);N_GUARD::R(H)
    • B(i);S_CUTR(j)::R(H)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • P(b);OGATE,XS(F)::P(C)
      • Refutation
        • B(i);
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • B(i);N_GUARD::S(F),XB(i)
      • Refutation
        • P(f);XS(F)
    • Try
      • S(F);
      • Threat
        • S(F),XP(d)
      • Vars
        • R(j);OGATE,XS(F)::R(H),XR(j)
      • Refutation
        • B(i);
  • Actual
    • S(F);
    • Vars
      • R(j);SBLOCK::S(E)
      • R(j);N_GUARD::R(H),XR(j)
      • R(j);S_CUTB(i)::S(F)
      • R(j);N_GUARD::R(H)
      • B(i);N_GUARD::S(F),XB(i)
      • B(i);S_CUTR(j)::R(H)
      • S(a);N_GUARD::S(F)
      • S(a);N_GUARD::S(F),XS(a)
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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).