MESON Chess Problem Database

Problem Display
PID: 51489 (8/KQ1p2N1/2pp1nN1/3k4/p7/B1P5/2n1BP2/8 w - - 0 1)

Holdsworth, J

Wright Wood, S (= Wood, SW)

The Guardian, 1962

8/KQ1p2N1/2pp1nN1/3k4/p7/B1P5/2n1BP2/8

#2

8 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qb4?
      • threat
        • 2.Qc4#
      • 1...Sxa3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
      • 1...c5
        • 2.Qb7#
      • 1...Se3
        • 2.Qd4#
      • 1...Sxb4!
    • 1.Qb5+?
      • 1...Ke4
        • 2.Qd3#
        • 2.Qf5#
      • 1...c5
        • 2.Qb7#
      • 1...cxb5!
  • Keys
    • 1.Qb1!
      • 1...Ke4
        • 2.Qh1#
      • 1...Sxa3
        • 2.Qf5#
      • 1...c5
        • 2.Qb7#
      • 1...Sa1
        • 2.Qd3#
        • 2.Qf5#
      • 1...Se1
        • 2.Qf5#
      • 1...Se3
        • 2.Qd3#
      • 1...Sb4
        • 2.Qf5#
      • 1...Sd4
        • 2.c4#
      • 1...Se4
        • 2.Qa2#
      • 1...Sg4
        • 2.Qh1#
      • 1...Sh5
        • 2.Qh1#
      • 1...Sh7
        • 2.Qh1#
      • 1...Se8
        • 2.Qh1#
      • 1...Sg8
        • 2.Qh1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);N_PINP(d)
      • Threat
        • QAB1(G)
      • Vars
        • S(a);N_GUARD,XB(C)::QAR1(G)
        • S(a);N_GUARD::QAR1(G),XS(a)
        • P(d);OGATEB::QAB(G)
        • S(a);N_GUARD::QAR1(G)
      • Refutation
        • S(a);XQ(G)
    • Try
      • Q(G);CHECK,N_PINP(d)
      • Vars
        • P(d);OGATEB,P_SPINP(d)::QAB(G)
      • Refutation
        • P(d);XQ(G)
  • Actual
    • Q(G);N_PINP(d)
    • Vars
      • K(c);P_SPINS(a),S_FLIGHT::QAB(G)
      • S(a);OGATE,XB(C)::QAR2(G)
      • P(d);OGATEB::QAB(G)
      • S(a);OGATE::QAR2(G)
      • S(a);SBLOCK::P(D)
      • S(f);SBLOCK::QAB(G)
      • S(f);N_GUARD::QAB(G)
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