MESON Chess Problem Database

Problem Display
PID: 185017 (1K6/2N2P2/Pk1B3R/2R1P3/1P5b/3b4/1Q3q2/r2r1B2 w - - 0 1)

Heyl, Peter

Sachsische Zeitung, 2000

(First published on Sat Feb 12 2000)

1K6/2N2P2/Pk1B3R/2R1P3/1P5b/3b4/1Q3q2/r2r1B2

#2

11 + 6

15391 Problemschach-Jahrbuch (2000) 2001

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc5
      • 2.Bxc5#
    • 1...Ra5
      • 2.bxa5#
    • 1...Rxa6
      • 2.Sd5#
    • 1...Bb1
      • 2.Sa8#
    • 1...Bc2
      • 2.Sa8#
    • 1...Bf5
      • 2.Sa8#
    • 1...Bxa6
      • 2.Sa8#
    • 1...Bg6
      • 2.Sa8#
    • 1...Bh7
      • 2.Sa8#
  • Tries
    • 1.Rc2?
      • threat
        • 2.Bc5#
      • 1...Qc5
        • 2.Bxc5#
      • 1...Qf6
        • 2.Qd4#
      • 1...Bg6
        • 2.Sa8#
      • 1...Bf6!
    • 1.Rc3?
      • threat
        • 2.Bc5#
      • 1...Qc5
        • 2.Bxc5#
      • 1...Bf6
        • 2.Qxf2#
      • 1...Bg6
        • 2.Sa8#
      • 1...Qf6!
    • 1.Rc4?
      • threat
        • 2.Bc5#
      • 1...Qc5
        • 2.Bxc5#
      • 1...Qf6
        • 2.Qd4#
      • 1...Bf6
        • 2.Qxf2#
      • 1...Bg6!
    • 1.Rb5+?
      • 1...Bxb5
        • 2.Bc5#
      • 1...Kc6!
  • Keys
    • 1.Rc1!
      • threat
        • 2.Bc5#
      • 1...Qc5
        • 2.Bxc5#
      • 1...Qf6
        • 2.Qd4#
      • 1...Bg6
        • 2.Sa8#
      • 1...Bf6
        • 2.Qxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 7
  • Sets
    • Q(c);OGATE,XR(D)::R(H)+B(G),DCHECK,XQ(c)
    • R(a);OGATE::QAR(B)+P(C)DCHECK,XR(a)
    • R(a);SBLOCK,XP(F)::S(I)
    • B(d);::S(I)
    • B(d);XP(F)::S(I)
  • Tries
    • Try
      • R(D);
      • Threat
        • R(H)+B(G),DCHECK
      • Vars
        • Q(c);::R(H)+B(G),DCHECK,XQ(c)
        • Q(c);N_GUARD::QAB(B)
        • B(d);::S(I)
      • Refutation
        • B(e);
    • Try
      • R(D);
      • Threat
        • R(H)+B(G),DCHECK
      • Vars
        • Q(c);::R(H)+B(G),DCHECK,XQ(c)
        • B(e);N_GUARD::QAB(B),XQ(c)
        • B(d);::S(I)
      • Refutation
        • Q(c);
    • Try
      • R(D);
      • Threat
        • R(H)+B(G),DCHECK
      • Vars
        • Q(c);::R(H)+B(G),DCHECK,XQ(c)
        • Q(c);N_GUARD::QAB(B)
        • B(e);N_GUARD::QAB(B),XQ(c)
      • Refutation
        • B(d);
    • Try
      • R(D);CHECK
      • Vars
        • B(d);XR(D)::R(H)+B(G),DCHECK
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • R(D);
    • Threat
      • R(H)+B(G),DCHECK
    • Vars
      • Q(c);::R(H)+B(G),DCHECK,XQ(c)
      • Q(c);N_GUARD::QAB(B)
      • B(d);::S(I)
      • B(e);N_GUARD::QAB(B),XQ(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).