MESON Chess Problem Database

Problem Display
PID: 120799 (8/B2B4/1R1Pq1p1/2k2p2/2b2N2/4nP2/p7/Q6K w - - 0 1)

Wynne, Frank Wilson

Checkmate, 1903

8/B2B4/1R1Pq1p1/2k2p2/2b2N2/4nP2/p7/Q6K

#2

8 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd6
      • 2.Rb5#
    • 1...Sd5
      • 2.Sxe6#
  • Tries
    • 1.Sxe6+?
      • 1...Kd5
        • 2.Qd4#
      • 1...Bxe6!
  • Keys
    • 1.Qe1!
      • threat
        • 2.Ra6#
      • 1...Kd4
        • 2.Rb5#
      • 1...Qxd7
        • 2.Qxe3#
      • 1...Qxd6
        • 2.Rb5#
      • 1...Bf1
        • 2.Qb4#
      • 1...Be2
        • 2.Qb4#
      • 1...Bb3
        • 2.Qb4#
      • 1...Bd3
        • 2.Qb4#
      • 1...Bb5
        • 2.Rc6#
      • 1...Bd5
        • 2.Qb4#
      • 1...Ba6
        • 2.Qb4#
      • 1...Sd5
        • 2.Sxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • Q(f);SBLOCK,XP(F)::B(G)+R(E),DCHECK
    • S(b);SBLOCK,S_CUTB(c)::S(D),XQ(f)
  • Tries
    • Try
      • S(D);CHECK,XQ(f)
      • Vars
        • K(d);P-FLIGHT::QAR1(A)
      • Refutation
        • B(c);XS(D)
  • Actual
    • Q(A);
    • Threat
      • B(G)+R(E)
    • Vars
      • K(d);S_FLIGHT::B(G)+R(E)
      • Q(f);N_GUARD,XB(H)::QAB(A),XS(b)
      • Q(f);SBLOCK,XP(F)::B(G)+R(E),DCHECK
      • B(c);::QAB1(A)
      • B(c);SBLOCK::B(G)+R(E),DCHECK
      • B(c);P_PINP(C)::QAB1(A)
      • S(b);SBLOCK,S_CUTB(c)::S(D),XQ(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).