MESON Chess Problem Database

Problem Display
PID: 145124 (8/1Q6/2p1P3/3kP3/Rn1N1P2/b2pB3/1p1P4/1K6 w - - 0 1)

Stent, James

Morning Post, 1890

(First published on Mon Sep 29 1890)

8/1Q6/2p1P3/3kP3/Rn1N1P2/b2pB3/1p1P4/1K6

#2

9 + 6

14868 Pirnie Collection 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Kc4
      • 2.Qxc6#
    • 1...Sa2
      • 2.Qxc6#
    • 1...Sc2
      • 2.Qxc6#
    • 1...Sa6
      • 2.Qxc6#
  • Tries
    • 1.Rxb4?
      • threat
        • 2.Qxc6#
      • 1...Ke4
        • 2.Qxc6#
      • 1...Kc5!
    • 1.Ra5+?
      • 1...Ke4
        • 2.Qh7#
      • 1...Kc4!
  • Keys
    • 1.Sxc6!
      • 1...Kc4
        • 2.Sa5#
      • 1...Ke4
        • 2.Se7#
      • 1...Kxe6
        • 2.Sd4#
      • 1...Sxc6
        • 2.Qb3#
      • 1...Sa2
        • 2.Sd8#
      • 1...Sc2
        • 2.Sd8#
      • 1...Sa6
        • 2.Sd8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 4
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(e);N_SPINP(f),P_SPINS(d),S_FLIGHT::QAR2(I),XP(f)
    • S(d);N_GUARD::QAB1(I),XP(f)
  • Tries
    • Try
      • R(D);XS(d)
      • Threat
        • QAB1(I),XP(f)
      • Vars
        • K(e);S_FLIGHT::QAB(I),XP(f)
      • Refutation
        • K(e);N_SPINP(f),P-FLIGHT
    • Try
      • R(D);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB(I)
      • Refutation
        • K(e);N_SPINP(f),S_FLIGHT
  • Actual
    • S(E);XP(f)
    • Vars
      • K(e);P_SPINS(d),S_FLIGHT::S(E)
      • K(e);P_SPINS(d),S_FLIGHT::QAB(I)+S(E)
      • K(e);S_FLIGHT,XP(H)::S(E)
      • S(d);OGATE,P_SPINS(d),SBLOCK,XS(E)::QAB(I)
      • S(d);N_GUARD::QAB(I)+S(E)
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