MESON Chess Problem Database

Problem Display
PID: 222807 (6K1/7Q/P2N4/3kpp1R/3P2B1/8/1N5B/8 w - - 0 1)

Arnold, William E

Elizabeth Herald, 1883

6K1/7Q/P2N4/3kpp1R/3P2B1/8/1N5B/8

#2

9 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Bxe5?
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qf7#
      • 1...f4
        • 2.Qe4#
        • 2.Qb7#
      • 1...fxg4!
    • 1.Qxf5?
      • 1...Kxd4
        • 2.Qxe5#
      • 1...Kxd6
        • 2.Qd7#
      • 1...Kc6!
    • 1.Qb7+?
      • 1...Kxd6
        • 2.Rh6#
      • 1...Ke6
        • 2.Rh6#
      • 1...Kxd4!
  • Keys
    • 1.Sxf5!
      • 1...Ke4
        • 2.Qb7#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qf7#
      • 1...exd4
        • 2.Se7#
      • 1...e4
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);XP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(H)
        • K(a);P_SPINP(c),S_FLIGHT::QAB1(H)
      • Refutation
        • P(c);XB(D)
    • Try
      • Q(H);P_PINP(b),XP(c)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT,XP(C)::QAB1(H),XP(b)
        • K(a);OGATEB,P-FLIGHT,XS(G)::QAR1(H)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b),XS(G)::R(E)
        • K(a);P_SPINP(c),S_FLIGHT::R(E)
      • Refutation
        • K(a);P-FLIGHT,XP(C)
  • Actual
    • S(G);XP(c)
    • Vars
      • K(a);S_FLIGHT::QAB(H)
      • K(a);S_FLIGHT::QAB1(H)
      • P(b);SBLOCK,XP(C)::R(E)+S(G),DCHECK
      • P(b);SBLOCK::QAR2(H)
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