MESON Chess Problem Database

Problem Display
PID: 66630 (8/8/K7/1Rb5/1pk5/3R4/bB5n/5Q2 w - - 0 1)

Narayanan, Chithathuz Gopatan Sathya

Scacchi e Scienze Applicate, 1999

8/8/K7/1Rb5/1pk5/3R4/bB5n/5Q2

#2

5 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Bb3
      • 2.Rd4#
    • 1...Bd4
      • 2.Rc3#
    • 1...b3
      • 2.Rd4#
  • Tries
    • 1.Qe2?
      • threat
        • 2.Qc2#
      • 1...Bb3
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Bd4
        • 2.Ra3#
        • 2.Rc3#
        • 2.Re3#
        • 2.Rf3#
        • 2.Rg3#
        • 2.Rh3#
      • 1...b3
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd4#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Bb1!
    • 1.Qf3?
      • threat
        • 2.Qd5#
      • 1...Bd4
        • 2.Rxd4#
      • 1...Sxf3!
    • 1.Qf4+?
      • 1...Bd4
        • 2.Qxd4#
      • 1...Kxd3!
    • 1.Qf5?
      • threat
        • 2.Rxc5#
        • 2.Qd5#
      • 1...Bg1
        • 2.Qd5#
      • 1...Bf2
        • 2.Qd5#
      • 1...Be3
        • 2.Qd5#
      • 1...Bb6
        • 2.Qd5#
      • 1...Bd6
        • 2.Qe4#
        • 2.Qd5#
      • 1...Ba7
        • 2.Qd5#
      • 1...Be7
        • 2.Qe4#
        • 2.Qd5#
      • 1...Bf8
        • 2.Qe4#
        • 2.Qd5#
      • 1...b3
        • 2.Qd5#
      • 1...Bd4!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Qc2#
      • 1...Bb1
        • 2.Qb3#
      • 1...Bb3
        • 2.Qxb3#
      • 1...Bd4
        • 2.Rxd4#
      • 1...b3
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • B(a);SBLOCK::QAB(A)+R(C),DCHECK
    • B(e);SBLOCK::QAB(A)+R(C),DCHECK
    • P(c);::QAB(A)+R(C),DCHECK
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • B(e);N_GUARD::R1(C),XB(e)
      • Refutation
        • S(b);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • B(e);N_GUARD,P_SPINB(e)::QAR1(A),XB(e)
      • Refutation
        • K(d);S_FLIGHT,XR(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(e);::QAB1(A)
        • P(c);::QAB1(A)
      • Refutation
        • B(e);
  • Actual
    • Q(A);
    • Threat
      • QAR2(A)
    • Vars
      • B(a);N_GUARD::QAB1(A)
      • B(a);N_GUARD::QAB1(A),XB(a)
      • B(e);N_GUARD::R1(C),XB(e)
      • P(c);N_GUARD::R1(C)
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).