MESON Chess Problem Database

Problem Display
PID: 141625 (7Q/4pB1P/2r5/1p4B1/2PN4/1p1kP3/1R4K1/3N4 w - - 0 1)

Narayanan, Chithathuz Gopatan Sathya

3rd Comm., The Problemist, 2011

7Q/4pB1P/2r5/1p4B1/2PN4/1p1kP3/1R4K1/3N4

#2

10 + 5

56 The Problemist 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Sf2#
    • 1...Rxc4
      • 2.Bg6#
  • Tries
    • 1.Sxc6?
      • threat
        • 2.Sf2#
        • 2.Qd4#
      • 1...Ke4
        • 2.Bg6#
      • 1...e6
        • 2.Qd4#
      • 1...e5!
    • 1.Rd2+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Sc3#
        • 2.Bd5#
      • 1...Kxd2!
    • 1.Rxb3+?
      • 1...Ke4
        • 2.Sf2#
        • 2.Bd5#
      • 1...Kd2!
  • Keys
    • 1.Se6!
      • threat
        • 2.Qd4#
      • 1...Kxc4
        • 2.Qd4#
      • 1...Ke4
        • 2.Bg6#
      • 1...Rxc4
        • 2.Sf2#
      • 1...Rd6
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::S(A)
    • R(d);N_GUARD,SBLOCK,XP(E)::B(H)
  • Tries
    • Try
      • S(F);XR(d)
      • Threat
        • DUALS(2)
      • Vars
        • K(b);S_FLIGHT::B(H)
        • P(e);::QAR1(J)
      • Refutation
        • P(e);
    • Try
      • R(B);CHECK
      • Refutation
        • K(b);P-FLIGHT,XR(B)
    • Try
      • R(B);CHECK,XP(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAR1(J)
    • Vars
      • K(b);S_FLIGHT,XP(E)::QAR1(J)
      • K(b);S_FLIGHT::B(H)
      • R(d);SBLOCK,XP(E)::S(A)
      • R(d);N_GUARD::S(F)
HTML5 logo

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).