MESON Chess Problem Database

Problem Display
PID: 10968 (8/8/Q7/3PP2p/3kP2B/K7/2B5/8 w - - 0 1)

Stubbs, Charles Francis

International Chess Magazine, 1885

8/8/Q7/3PP2p/3kP2B/K7/2B5/8

#2

7 + 2

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qd3#
    • 1...Kc5
      • 2.Bf2#
    • 1...Kxe5
      • 2.Qf6#
  • Tries
    • 1.Kb3?
      • 1...Kc5
        • 2.Bf2#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Ke3!
    • 1.Kb4?
      • 1...Kxe5
        • 2.Qf6#
      • 1...Ke3!
    • 1.Bb1?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc5
        • 2.Bf2#
      • 1...Kxe5
        • 2.Qf6#
      • 1...Ke3!
    • 1.Bf2+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kxe5!
    • 1.Bg3?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5
        • 2.Bf2#
      • 1...h4!
    • 1.Bg5?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc5
        • 2.Be3#
      • 1...Kxe5
        • 2.Qf6#
      • 1...h4!
    • 1.Qe2?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc5
        • 2.Bf2#
      • 1...Kxe5!
    • 1.Qd3+?
      • 1...Kc5
        • 2.Bf2#
      • 1...Kxe5!
    • 1.Qb6+?
      • 1...Kc4
        • 2.Qb4#
      • 1...Kxe5
        • 2.Bg3#
        • 2.Qf6#
      • 1...Kc3!
    • 1.Qc6?
      • 1...Kxe5
        • 2.Qf6#
      • 1...Ke3!
  • Keys
    • 1.Qf1!
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qf2#
      • 1...Kc5
        • 2.Bf2#
      • 1...Kxe5
        • 2.Qf6#

This anticipates 6999(1935)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);S_FLIGHT::QAR1(G)
    • K(a);S_FLIGHT::B(D)
    • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(G)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(a);S_FLIGHT::B(D)
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(A);
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • K(a);S_FLIGHT::B(D)
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • B(D);CHECK
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • P(b);
    • Try
      • B(D);
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • K(a);S_FLIGHT::B(D)
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Vars
        • K(a);S_FLIGHT::QAR1(G)
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);S_FLIGHT::B(D)
      • Refutation
        • K(a);S_FLIGHT,XP(F)
    • Try
      • Q(G);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(G)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(G);
      • Vars
        • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(G)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(G);
    • Vars
      • K(a);S_FLIGHT::QAR1(G)
      • K(a);S_FLIGHT::QAB1(G)
      • K(a);S_FLIGHT::B(D)
      • K(a);OGATEB,S_FLIGHT,XP(F)::QAB1(G)
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