MESON Chess Problem Database

Problem Display
PID: 224410 (1b4B1/5Pn1/2P5/K1Nkr3/2N3pq/4Rn2/p7/rQ4B1 w - - 0 1)

Smith, BP

Wilkes-Barre Record, 1888

1b4B1/5Pn1/2P5/K1Nkr3/2N3pq/4Rn2/p7/rQ4B1

#2

9 + 9

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Rd3+?
      • 1...Kxc4
        • 2.Qc2#
        • 2.Qb3#
        • 2.Qb4#
        • 2.Qb5#
      • 1...Kxc6
        • 2.Qb6#
        • 2.Qb7#
      • 1...Sd4!
    • 1.f8Q+?
      • 1...Kd4
        • 2.Rd3#
        • 2.Qd3#
        • 2.Qxa1#
        • 2.Qb2#
      • 1...Kxc6
        • 2.Qb6#
        • 2.Qb7#
      • 1...Re6
        • 2.Qe4#
      • 1...Se6!
    • 1.f8B+?
      • 1...Kd4
        • 2.Rd3#
        • 2.Qd3#
        • 2.Qxa1#
        • 2.Qb2#
      • 1...Kxc6
        • 2.Qb6#
        • 2.Qb7#
      • 1...Re6
        • 2.Qe4#
      • 1...Se6!
  • Keys
    • 1.Rxe5+!
      • 1...Kxc4
        • 2.Qc2#
        • 2.Qd3#
        • 2.Qb3#
        • 2.Qb4#
      • 1...Kxc6
        • 2.Qb6#
        • 2.Qb7#
      • 1...Bxe5
        • 2.Qe4#
      • 1...Sxe5
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(C);CHECK
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • P(H);CHECK
      • Vars
        • R(g);P_SPINR(g)::QAB1(A)
      • Refutation
        • S(h);P_SPINS(h)
    • Try
      • P(H);CHECK
      • Vars
        • R(g);P_SPINR(g)::QAB1(A)
      • Refutation
        • S(h);P_SPINS(h)
  • Actual
    • R(C);CHECK,XR(g)
    • Vars
      • B(i);XR(C)::QAB1(A)
      • S(c);XR(C)::QAB1(A)
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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).