MESON Chess Problem Database

Problem Display
PID: 157102 (8/7Q/3Rp3/P2p1B2/1N1k4/1P3p1N/1K3R2/8 w - - 0 1)

Butler, Henry William

The Field, 1880

8/7Q/3Rp3/P2p1B2/1N1k4/1P3p1N/1K3R2/8

#2

9 + 4

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Sc2#
    • 1...e5
      • 2.Qa7#
  • Tries
    • 1.Sc2+?
      • 1...Ke5
        • 2.Rxe6#
      • 1...Kc5!
    • 1.Sc6+?
      • 1...Ke3
        • 2.Rxe6#
        • 2.Qh6#
      • 1...Kc5!
    • 1.Rd2+?
      • 1...Ke3
        • 2.Qh6#
      • 1...Ke5
        • 2.Rxe6#
      • 1...Kc5!
    • 1.Rxd5+?
      • 1...Ke3
        • 2.Sc2#
        • 2.Rd3#
        • 2.Qh6#
        • 2.Qa7#
      • 1...exd5!
    • 1.Qg7+?
      • 1...Ke3
        • 2.Sc2#
        • 2.Rxe6#
        • 2.Qc3#
        • 2.Qe5#
      • 1...e5
        • 2.Qa7#
      • 1...Kc5!
  • Keys
    • 1.Qe7!
      • 1...Ke3
        • 2.Sc2#
      • 1...Kc5
        • 2.Rxd5#
      • 1...Ke5
        • 2.Rxd5#
      • 1...exf5
        • 2.Rxd5#
      • 1...e5
        • 2.Qa7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • K(b);N_SPINP(c),S_FLIGHT::S(E)
    • P(d);SBLOCK::QAB(I)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::R1(H),XP(d)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • S(E);CHECK
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • R(B);CHECK
      • Vars
        • K(b);N_SPINP(c),S_FLIGHT::QAB(I)
        • K(b);N_SPINP(c),S_FLIGHT::R1(H),XP(d)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • R(H);CHECK,XP(c)
      • Refutation
        • P(d);XR(H)
    • Try
      • Q(I);CHECK
      • Vars
        • P(d);SBLOCK::QAB(I)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
  • Actual
    • Q(I);
    • Vars
      • K(b);N_SPINP(c),P_SPINP(d),S_FLIGHT::S(E)
      • K(b);N_SPINP(c),S_FLIGHT::QAB(I)+R(H),DCHECK,XP(c)
      • K(b);N_SPINP(c),P_SPINP(d),S_FLIGHT::R1(H),XP(c)
      • P(d);N_GUARD,XB(G)::R1(H),XP(c)
      • P(d);SBLOCK::QAB(I)
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