MESON Chess Problem Database

Problem Display
PID: 271512 (8/3R1Nbr/3Bp3/qp6/pp1k2PR/3P4/bP2K3/2N4B w - - 0 1)

Subrahmanyam, Swaminatha

The Problemist, 1956

8/3R1Nbr/3Bp3/qp6/pp1k2PR/3P4/bP2K3/2N4B

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rh5
      • 2.gxh5#
    • 1...Bb1
      • 2.Bxb4#
      • 2.Be7#
      • 2.Bf8#
    • 1...Bh6
      • 2.g5#
    • 1...b3
      • 2.Ba3#
      • 2.Bb4#
      • 2.Be7#
      • 2.Bf8#
  • Tries
    • 1.Sb3+?
      • 1...axb3
        • 2.Bxb4#
        • 2.Be7#
        • 2.Bf8#
      • 1...Bxb3!
    • 1.Bh2+?
      • 1...Bd5
        • 2.Bg1#
      • 1...Kc5!
    • 1.Bg3+?
      • 1...Bd5
        • 2.Bf2#
      • 1...Kc5!
    • 1.Bf4+?
      • 1...Bd5
        • 2.Be3#
      • 1...Kc5!
  • Keys
    • 1.Kd2!
      • threat
        • 2.Se2#
      • 1...Bh6+
        • 2.g5#
      • 1...b3+
        • 2.Bb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(i);OGATE::R(G)+P(F),XR(i)
    • B(h);S_CUTR(i)::R(G)+P(F)
  • Tries
    • Try
      • S(A);CHECK
      • Refutation
        • B(a);XS(A)
    • Try
      • B(H);CHECK
      • Vars
        • B(a);P_SPINB(a)::B(H)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(H);CHECK
      • Vars
        • B(a);P_SPINB(a)::B(H)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • B(H);CHECK
      • Vars
        • B(a);P_SPINB(a)::B(H)
      • Refutation
        • K(d);S_FLIGHT
  • Actual
    • K(D);P-FLIGHT
    • Threat
      • S(A)
    • Vars
      • B(h);CHECK,S_CUTR(i)::R(G)+P(F)
      • P(c);CHECK,S_CUTB(a)::R(I)+B(H)
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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).