MESON Chess Problem Database

Problem Display
PID: 156978 (Q7/5N2/4p3/3N4/K3k3/5p2/5B2/5B2 w - - 0 1)

Butler, Henry William

HM., Design and Work, 0000

Q7/5N2/4p3/3N4/K3k3/5p2/5B2/5B2

#2

6 + 3

15351 SCPF/BCPS Black Books 2016

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Sd6#
  • Tries
    • 1.Sc3+?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kf5!
    • 1.Se3+?
      • 1...Kd4
        • 2.Sd1#
      • 1...Kf4!
    • 1.Sf6+?
      • 1...Kf4
        • 2.Qe4#
      • 1...Kf5!
    • 1.Qb8?
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Qb7#
        • 2.Qa8#
      • 1...e5
        • 2.Qxe5#
      • 1...Kf5!
    • 1.Qe8?
      • threat
        • 2.Qxe6#
      • 1...Kxd5
        • 2.Qa8#
      • 1...e5
        • 2.Qxe5#
      • 1...Kf5!
    • 1.Qh8?
      • threat
        • 2.Qe5#
      • 1...Kxd5
        • 2.Qa8#
      • 1...e5
        • 2.Qxe5#
      • 1...Kf5!
  • Keys
    • 1.Qg8!
      • 1...Kxd5
        • 2.Qa8#
      • 1...Kf5
        • 2.Bd3#
      • 1...exd5
        • 2.Qg4#
      • 1...e5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::S(E)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::B(B)+S(D)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(F)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • P(c);::QAR1(F),XP(c)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(F);P_PINP(c)
      • Threat
        • QAR2(F),XP(c)
      • Vars
        • K(b);N_SPINP(c),OGATEB,S_FLIGHT,XS(D)::QAB(F)
        • P(c);OGATE::QAR1(F),XP(c)
      • Refutation
        • K(b);N_SPINP(c),S_FLIGHT
    • Try
      • Q(F);
      • Threat
        • QAR1(F)
      • Vars
        • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
        • P(c);::QAR1(F),XP(c)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(D)::QAB(F)
      • K(b);S_FLIGHT::B(A)
      • P(c);SBLOCK,XS(D)::QAR2(F)
      • P(c);SBLOCK::S(E)
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