MESON Chess Problem Database

Problem Display
PID: 144139 (Q7/5p2/3N4/1p1Pkp1K/1B6/1P6/2P3B1/8 w - - 0 1)

Laws, Benjamin Glover

The Chess Player's Chronicle (Sampson), 1888

(First published on Wed Nov 7 1888)

Q7/5p2/3N4/1p1Pkp1K/1B6/1P6/2P3B1/8

#2

8 + 4

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qa1#
  • Tries
    • 1.Sc4+?
      • 1...Kd4
        • 2.Qa1#
        • 2.Qa7#
      • 1...Kf4
        • 2.Bd6#
        • 2.Qb8#
      • 1...Kf6
        • 2.Qa1#
        • 2.Qh8#
      • 1...bxc4!
    • 1.Qa7?
      • 1...Kf6
        • 2.Bc3#
      • 1...f4
        • 2.Qa1#
      • 1...f6
        • 2.Qe3#
      • 1...Kf4!
    • 1.Qe8+?
      • 1...Kd4
        • 2.Sxb5#
        • 2.Sxf5#
      • 1...Kf6
        • 2.Bc3#
      • 1...Kf4!
  • Keys
    • 1.Qb8!
      • 1...Kd4
        • 2.Sxf5#
      • 1...Kf4
        • 2.Sc4#
      • 1...Kf6
        • 2.Se8#
      • 1...f4
        • 2.Bc3#
      • 1...f6
        • 2.Sxb5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(H)
  • Tries
    • Try
      • S(G);CHECK
      • Refutation
        • P(a);XS(G)
    • Try
      • Q(H);
      • Vars
        • K(b);S_FLIGHT::B(D)
        • P(c);SBLOCK::QAB(H)
        • P(d);SBLOCK::QAR2(H)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(b);S_FLIGHT::B(D)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(H);
    • Vars
      • K(b);S_FLIGHT::S(G),XP(c)
      • K(b);S_FLIGHT::QAB(H)+S(G)
      • K(b);S_FLIGHT::S(G)
      • P(c);SBLOCK::B(D)
      • P(d);SBLOCK::QAB(H)+S(G),XP(a)
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