MESON Chess Problem Database

Problem Display
PID: 51219 (2B4b/q3Rp1K/p7/Nn1k1nQ1/1P2p2R/3P4/7B/3N3b w - - 0 1)

Wright Wood, S (= Wood, SW)

Manchester Guardian, 1954

2B4b/q3Rp1K/p7/Nn1k1nQ1/1P2p2R/3P4/7B/3N3b

#2

10 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Bb7#
    • 1...Sd4
      • 2.Sc3#
      • 2.Se3#
  • Tries
    • 1.Rd7+?
      • 1...Ke6
        • 2.Rd6#
      • 1...Sd6
        • 2.Rxd6#
      • 1...Qxd7!
    • 1.Qxf5+?
      • 1...Be5
        • 2.Qxe5#
      • 1...Kd4!
    • 1.dxe4+?
      • 1...Kd4
        • 2.Qd2#
      • 1...Bxe4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.dxe4#
      • 1...Kd4
        • 2.dxe4#
      • 1...exd3
        • 2.Qa2#
      • 1...Qd4
        • 2.Bb7#
      • 1...Bd4
        • 2.Qa2#
      • 1...Sbd4
        • 2.Sc3#
      • 1...Sfd4
        • 2.Se3#
      • 1...e3
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD,SBLOCK::B(J)
  • Tries
    • Try
      • R(H);CHECK
      • Vars
        • K(d);N_SPINS(e),S_FLIGHT::B(J)+R(H),DCHECK
        • S(c);N_GUARD::R1(H),XS(c)
      • Refutation
        • Q(g);XR(H)
    • Try
      • Q(G);CHECK,XS(e)
      • Vars
        • B(i);N_GUARD,P_SPINB(i)::QAR1(G),XB(i)
      • Refutation
        • K(d);P-FLIGHT,P_SPINP(b)
    • Try
      • P(C);CHECK,XP(b)
      • Vars
        • K(d);N_SPINS(e),P-FLIGHT::QAR2(G)
      • Refutation
        • B(a);XP(C)
  • Actual
    • Q(G);N_PINS(e)
    • Threat
      • QAR(G)+P(C)DCHECK,XP(b)
    • Vars
      • K(d);P-FLIGHT,P_SPINP(b)::QAR(G)+P(C),XP(b)
      • P(b);P_SPINP(b),XP(C)::QAB(G)
      • Q(g);N_GUARD,SBLOCK::B(J)
      • B(i);SBLOCK::QAB(G)
      • S(c);N_GUARD,SBLOCK,S_CUTB(i)::S(A)
      • S(e);N_GUARD,SBLOCK,S_CUTQ(g)::S(A)
      • P(b);::QAB(G)
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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).