MESON Chess Problem Database

Problem Display
PID: 222503 (1Q6/4K3/8/1pN5/1kp3R1/3p4/3N4/4B3 w - - 0 1)

Shinkman, William Anthony

Philadelphia Times, 1884

1Q6/4K3/8/1pN5/1kp3R1/3p4/3N4/4B3

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Sdb3#
      • 2.Sxc4#
    • 1...Kxc5
      • 2.Qd6#
  • Tries
    • 1.Sb1+?
      • 1...Kxc5
        • 2.Qd6#
      • 1...d2!
    • 1.Sxc4+?
      • 1...Kxc5
        • 2.Qd6#
      • 1...d2!
    • 1.Sxd3+?
      • 1...Ka3
        • 2.Qa7#
        • 2.Qa8#
      • 1...Ka4
        • 2.Qa7#
        • 2.Qa8#
      • 1...Ka5
        • 2.Qa7#
      • 1...Kc3!
    • 1.Rxc4+?
      • 1...Ka5
        • 2.Sdb3#
        • 2.Qa7#
        • 2.Qc7#
        • 2.Qd8#
      • 1...Ka3!
    • 1.Qe5?
      • 1...Ka5
        • 2.Sxc4#
      • 1...Ka3!
  • Keys
    • 1.Qh2!
      • 1...Ka3
        • 2.Sb1#
      • 1...Kc3
        • 2.Sb1#
      • 1...Ka5
        • 2.Sxc4#
      • 1...Kxc5
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),OGATEB,S_FLIGHT,XS(D)::QAB1(F)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT,XS(D)::QAB1(F)
      • Refutation
        • P(a);N_SPINP(c),P_SPINP(a)
    • Try
      • S(B);CHECK,P_PINP(d),XP(c)
      • Vars
        • K(b);N_SPINP(d),S_FLIGHT,XS(D)::QAB1(F)
      • Refutation
        • P(a);N_SPINP(d),P_SPINP(a)
    • Try
      • S(D);CHECK,XP(a)
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::QAR2(F)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • R(C);CHECK,P_PINP(d),XP(c)
      • Refutation
        • K(b);N_SPINP(d),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::B(A)+S(B),DCHECK,XP(c)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);N_SPINP(c),S_FLIGHT::S(B)
      • K(b);N_SPINP(c),S_FLIGHT::B(A)+S(B),DCHECK
      • K(b);N_SPINP(c),S_FLIGHT::B(A)+S(B),DCHECK,XP(c)
      • K(b);N_SPINP(c),OGATEB,S_FLIGHT,XS(D)::QAB1(F)
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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).