MESON Chess Problem Database

Problem Display
PID: 253344 (6B1/6Q1/3pp3/B2P1N2/3pk1P1/1P1N4/5P2/7K w - - 0 1)

Browne, Gordon

The Field, 1912

(First published on Sat Oct 19 1912)

6B1/6Q1/3pp3/B2P1N2/3pk1P1/1P1N4/5P2/7K

#2

10 + 4

15239 Valois Notebooks 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Qb7#
  • Tries
    • 1.Sg3+?
      • 1...Kxd3
        • 2.Bh7#
        • 2.Qg6#
        • 2.Qh7#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Kf3!
    • 1.Sh4?
      • 1...Kxd5
        • 2.Qb7#
      • 1...exd5
        • 2.Bh7#
        • 2.Qg6#
        • 2.Qh7#
      • 1...e5
        • 2.Qg6#
        • 2.Qh7#
      • 1...Kxd3!
    • 1.Qh7?
      • 1...Kxd3
        • 2.Sg3#
      • 1...Kxd5
        • 2.Se7#
        • 2.Qb7#
      • 1...exd5
        • 2.Sh4#
      • 1...exf5
        • 2.Qxf5#
      • 1...e5
        • 2.Sh4#
      • 1...Kf3!
  • Keys
    • 1.Qg6!
      • 1...Kxd3
        • 2.Sg3#
      • 1...Kf3
        • 2.Sxd4#
      • 1...Kxd5
        • 2.Se7#
      • 1...exd5
        • 2.Sh4#
      • 1...exf5
        • 2.Qxf5#
      • 1...e5
        • 2.Sh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(b);OGATEB,P_SPINP(d),S_FLIGHT,XP(G)::QAB(I)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(b);N_GUARD,P_SPINP(d),S_FLIGHT,XP(G)::QAB(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(H);
      • Vars
        • K(b);OGATEB,P_SPINP(d),S_FLIGHT,XP(G)::QAB(I)
      • Refutation
        • K(b);S_FLIGHT,XS(D)
    • Try
      • Q(I);
      • Vars
        • K(b);N_GUARD,S_FLIGHT,XS(D)::QAB(I)+S(H)
        • P(d);XP(G)::QAB(I)+S(H)
        • P(d);OGATE,P_SPINP(d),XS(H)::QAB1(I),XP(d)
        • P(d);::QAB(I)+S(H)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(b);N_GUARD,S_FLIGHT,XS(D)::QAB(I)+S(H)
      • K(b);N_GUARD,S_FLIGHT::S(H),XP(a)
      • K(b);N_GUARD,P_SPINP(d),S_FLIGHT,XP(G)::S(H)
      • P(d);XP(G)::QAB(I)+S(H)
      • P(d);OGATE,P_SPINP(d),XS(H)::QAB1(I),XP(d)
      • P(d);::QAB(I)+S(H)
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