MESON Chess Problem Database

Problem Display
PID: 261250 (8/8/5K2/3N4/R1P1k3/3N1p2/BnP2P2/B7 w - - 0 1)

Hopkins, EL

The Field, 1886

(First published on Sat Nov 20 1886)

8/8/5K2/3N4/R1P1k3/3N1p2/BnP2P2/B7

#2

9 + 3

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.c5#
    • 1...Sd1
      • 2.Sc5#
      • 2.c5#
  • Tries
    • 1.Ke6?
      • 1...Kd4
        • 2.c5#
      • 1...Sxa4
        • 2.Sf6#
      • 1...Sxc4
        • 2.Sc5#
        • 2.Sf6#
        • 2.Rxc4#
      • 1...Sd1
        • 2.Sc5#
        • 2.Sf6#
        • 2.c5#
      • 1...Sxd3!
    • 1.Kg6?
      • 1...Kd4
        • 2.c5#
      • 1...Sxa4
        • 2.Sf6#
      • 1...Sxc4
        • 2.Sf6#
      • 1...Sd1
        • 2.Sc5#
        • 2.Sf6#
        • 2.c5#
      • 1...Sxd3!
  • Keys
    • 1.Kg5!
      • 1...Kd4
        • 2.c5#
      • 1...Sxd3
        • 2.Sf6#
      • 1...Sxa4
        • 2.Sf6#
      • 1...Sxc4
        • 2.Sf6#
      • 1...Sd1
        • 2.Sc5#
        • 2.Sf6#
        • 2.c5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(c);P-FLIGHT,P_SPINS(a)::R(F)+P(G)
  • Tries
    • Try
      • K(I);P-FLIGHT
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a)::R(F)+P(G)
        • S(a);XR(F)::S(H)
      • Refutation
        • S(a);XS(E)
    • Try
      • K(I);P-FLIGHT
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a)::R(F)+P(G)
        • S(a);XR(F)::S(H)
        • S(a);P_SPINS(a),XP(G)::S(H)
      • Refutation
        • S(a);XS(E)
  • Actual
    • K(I);S_FLIGHT
    • Vars
      • K(c);P-FLIGHT,P_SPINS(a)::R(F)+P(G)
      • S(a);XS(E)::S(H)
      • S(a);XR(F)::S(H)
      • S(a);P_SPINS(a),XP(G)::S(H)
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