MESON Chess Problem Database

Problem Display
PID: 258375 (Q2R2B1/3b4/2N1rP2/1p1N2p1/1K2k1p1/6B1/4P3/8 w - - 0 1)

Hurley, WT

English Mechanic and World of Science, 1891

(First published on Fri Dec 4 1891)

Q2R2B1/3b4/2N1rP2/1p1N2p1/1K2k1p1/6B1/4P3/8

#2

9 + 6

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.Bh7#
    • 1...Bc8
      • 2.Bh7#
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qd3#
      • 1...Kf5
        • 2.Bh7#
      • 1...Kxd5!
  • Keys
    • 1.Qa1!
      • 1...Kxd5
        • 2.Qh1#
      • 1...Kf5
        • 2.Bh7#
      • 1...Rxc6
        • 2.Qe5#
      • 1...Rxf6
        • 2.Qe5#
        • 2.Qb1#
      • 1...Bxc6
        • 2.Bh7#
      • 1...Re5
        • 2.Qxe5#
        • 2.Qb1#
      • 1...Rd6
        • 2.Qe5#
        • 2.Qb1#
      • 1...Re7
        • 2.Qb1#
      • 1...Re8
        • 2.Qb1#
      • 1...Bc8
        • 2.Bh7#
        • 2.Qb1#
      • 1...Be8
        • 2.Qb1#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(a);N_GUARD,S_FLIGHT::B(I)
    • B(f);::B(I)
  • Tries
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • K(a);N_GUARD,S_FLIGHT::B(I)
      • Refutation
        • K(a);P_SPINB(f),P_SPINR(e),S_FLIGHT,XS(D)
  • Actual
    • Q(G);
    • Vars
      • K(a);N_GUARD,P_SPINB(f),P_SPINR(e),S_FLIGHT,XS(D)::QAB(G)
      • K(a);N_GUARD,S_FLIGHT::B(I)
      • R(e);N_GUARD,XS(E)::QAR1(G)
      • B(f);XS(E)::B(I)
      • R(e);::QAB(G)
      • B(f);::QAB(G)
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