MESON Chess Problem Database

Problem Display
PID: 133500 (B2R4/B4pr1/Q5b1/2K2p2/1R6/2p1k2p/2r2p2/4n3 w - - 0 1)

Rice, John Michael

The Problemist, 1984

B2R4/B4pr1/Q5b1/2K2p2/1R6/2p1k2p/2r2p2/4n3

#2

6 + 10

5174 Chess Problem Spectrum 2003

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Re8#
    • 1...Re2
      • 2.Kb5#
    • 1...Sg2
      • 2.Qd3#
    • 1...Sd3+
      • 2.Qxd3#
    • 1...Sf3
      • 2.Qd3#
    • 1...f6
      • 2.Qe6#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Ka5#
        • 2.Kc7#
      • 1...Sd3
        • 2.Qxd3#
      • 1...Ra2
        • 2.Kc7#
      • 1...Rd2
        • 2.Re8#
      • 1...Sf3
        • 2.Qd3#
      • 1...f6!
    • 1.Bg2?
      • threat
        • 2.Kc6#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Sxg2
        • 2.Qd3#
      • 1...Rd2
        • 2.Re8#
      • 1...Sf3
        • 2.Qd3#
      • 1...f6
        • 2.Qe6#
      • 1...hxg2!
    • 1.Rh4?
      • threat
        • 2.Kb4#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Rd2
        • 2.Re8#
      • 1...Sf3
        • 2.Qd3#
      • 1...f6
        • 2.Qe6#
      • 1...Rb2!
    • 1.Rd1?
      • threat
        • 2.Kd6#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Sf3
        • 2.Qd3#
      • 1...f6
        • 2.Qe6#
      • 1...Rd2!
    • 1.Qe2+?
      • 1...Rxe2
        • 2.Kb5#
      • 1...Kxe2!
    • 1.Qc4?
      • threat
        • 2.Kb5#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...f6
        • 2.Qe6#
      • 1...Rd2
        • 2.Re8#
      • 1...Sf3
        • 2.Qd3#
      • 1...Ra2!
  • Keys
    • 1.Bh1!
      • threat
        • 2.Kc6#
      • 1...Sd3+
        • 2.Qxd3#
      • 1...Sg2
        • 2.Qd3#
      • 1...Rd2
        • 2.Re8#
      • 1...Sf3
        • 2.Qd3#
      • 1...f6
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK::R(F)
    • R(b);SBLOCK::B(D)+K(B)
    • S(a);N_GUARD::QAR1(C)
    • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
    • P(i);N_GUARD::QAR(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAR1(C),XS(a)
        • R(b);::B(D)+K(B)
        • R(b);SBLOCK::R(F)
        • S(a);N_GUARD::QAR1(C)
      • Refutation
        • P(i);
    • Try
      • B(E);
      • Threat
        • B(D)+K(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD,XB(E)::QAR1(C)
        • R(b);SBLOCK::R(F)
        • S(a);N_GUARD::QAR1(C)
        • P(i);N_GUARD::QAR(C)
      • Refutation
        • P(f);XB(E)
    • Try
      • R(A);
      • Threat
        • B(D)+K(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
        • R(b);SBLOCK::R(F)
        • S(a);N_GUARD::QAR1(C)
        • P(i);N_GUARD::QAR(C)
      • Refutation
        • R(b);
    • Try
      • R(F);
      • Threat
        • B(D)+K(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
        • S(a);N_GUARD::QAR1(C)
        • P(i);N_GUARD::QAR(C)
      • Refutation
        • R(b);
    • Try
      • Q(C);CHECK
      • Vars
        • R(b);SBLOCK,XQ(C)::B(D)+K(B)
      • Refutation
        • K(e);P-FLIGHT,XQ(C)
    • Try
      • Q(C);
      • Threat
        • B(D)+K(B)
      • Vars
        • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
        • P(i);N_GUARD::QAR(C)
        • R(b);SBLOCK::R(F)
        • S(a);N_GUARD::QAR1(C)
      • Refutation
        • R(b);
  • Actual
    • B(E);
    • Threat
      • B(D)+K(B)
    • Vars
      • S(a);CHECK,N_GUARD::QAR1(C),XS(a)
      • S(a);N_GUARD::QAR1(C)
      • R(b);SBLOCK::R(F)
      • P(i);N_GUARD::QAR(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).