MESON Chess Problem Database

Problem Display
PID: 208062 (rk3n2/pN6/5p1K/3Q4/2RB4/7b/3p4/q7 w - - 0 1)

Shinkman, William Anthony

Maryland Chess Review, 1874

rk3n2/pN6/5p1K/3Q4/2RB4/7b/3p4/q7

#2

5 + 8

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sa5?
      • threat
        • 2.Qb7#
        • 2.Qb5#
        • 2.Qd6#
      • 1...Qxd4
        • 2.Qb7#
      • 1...Qb2
        • 2.Qd6#
      • 1...Qb1
        • 2.Qd6#
      • 1...Qh1
        • 2.Qd6#
      • 1...Qa3
        • 2.Qb7#
        • 2.Qb5#
      • 1...Qa4
        • 2.Qb7#
        • 2.Qd6#
      • 1...Bg2
        • 2.Qd6#
        • 2.Qd8#
      • 1...Bd7
        • 2.Qb7#
        • 2.Qd6#
      • 1...Bc8
        • 2.Qd6#
      • 1...Se6
        • 2.Qb7#
        • 2.Qb5#
      • 1...Sd7
        • 2.Qb7#
        • 2.Qd6#
      • 1...a6
        • 2.Qb7#
        • 2.Qd6#
      • 1...Qxa5!
    • 1.Sd8?
      • threat
        • 2.Qb7#
        • 2.Qb5#
        • 2.Qd6#
      • 1...Qxd4
        • 2.Qb7#
      • 1...Qb2
        • 2.Qd6#
      • 1...Qb1
        • 2.Qd6#
      • 1...Qh1
        • 2.Qd6#
      • 1...Qa3
        • 2.Qb7#
        • 2.Qb5#
      • 1...Qa4
        • 2.Qb7#
        • 2.Qd6#
      • 1...Qa5
        • 2.Qb7#
      • 1...Bg2
        • 2.Qd6#
      • 1...Bd7
        • 2.Qb7#
        • 2.Qd6#
      • 1...Bc8
        • 2.Qd6#
      • 1...Se6
        • 2.Qb7#
        • 2.Qb5#
      • 1...Sd7
        • 2.Qb7#
        • 2.Qd6#
      • 1...a6
        • 2.Qb7#
        • 2.Qd6#
      • 1...Qa6!
    • 1.Qc6?
      • threat
        • 2.Qc7#
      • 1...Se6
        • 2.Qc8#
      • 1...Qa5!
    • 1.Qc5?
      • threat
        • 2.Qc7#
      • 1...Kxb7
        • 2.Qb5#
      • 1...Se6
        • 2.Qc8#
      • 1...Qa5!
    • 1.Qe5+?
      • 1...Kxb7
        • 2.Qb5#
      • 1...fxe5!
    • 1.Qd8+?
      • 1...Bc8
        • 2.Qc7#
        • 2.Qxc8#
      • 1...Kxb7!
  • Keys
    • 1.Sc5!
      • threat
        • 2.Qb7#
      • 1...Kc7
        • 2.Sa6#
      • 1...Kc8
        • 2.Sa6#
      • 1...Qb2
        • 2.Sa6#
      • 1...Qb1
        • 2.Sa6#
      • 1...Qh1
        • 2.Sa6#
      • 1...Qa6
        • 2.Sxa6#
      • 1...Bg2
        • 2.Qd8#
      • 1...Bc8
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • Q(a);XB(B)::QAR1(C)
        • Q(a);::QAB(C)
        • B(c);::QAB(C)
      • Refutation
        • Q(a);XS(E)
    • Try
      • S(E);
      • Threat
        • DUALS(3)
      • Vars
        • Q(a);XB(B)::QAR1(C)
        • Q(a);::QAB(C)
        • Q(a);::QAR1(C)
        • B(c);::QAB(C)
      • Refutation
        • Q(a);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • S(h);S_CUTB(c)::QAR1(C)
      • Refutation
        • Q(a);
    • Try
      • Q(C);
      • Threat
        • QAB1(C)
      • Vars
        • K(g);OGATEB,P-FLIGHT,XS(E)::QAR2(C)
        • S(h);S_CUTB(c)::QAR1(C)
      • Refutation
        • Q(a);
    • Try
      • Q(C);CHECK
      • Vars
        • K(g);OGATEB,P-FLIGHT,XS(E)::QAR2(C)
      • Refutation
        • P(d);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • K(g);P-FLIGHT,XS(E)
  • Actual
    • S(E);
    • Threat
      • QAR1(C)
    • Vars
      • K(g);S_FLIGHT::R(A)+S(E),DCHECK
      • K(g);P-FLIGHT::R(A)+S(E)
      • Q(a);N_GUARD::S(E)
      • Q(a);N_GUARD::S(E),XQ(a)
      • B(c);N_GUARD::QAR2(C)
      • B(c);SBLOCK::QAB(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).