MESON Chess Problem Database

Problem Display
PID: 224542 (8/BQ2K3/2P1Pp2/2ppk1p1/8/3P2PP/1p6/1B6 w - - 0 1)

Phelps, Francis Bradley

Nashville Daily American, 1888

8/BQ2K3/2P1Pp2/2ppk1p1/8/3P2PP/1p6/1B6

#2

9 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kf5
      • 2.d4#
    • 1...c4
      • 2.d4#
  • Tries
    • 1.Bxc5?
      • threat
        • 2.d4#
      • 1...Kf5
        • 2.d4#
      • 1...d4!
    • 1.Bb8+?
      • 1...Kf5
        • 2.d4#
      • 1...Kd4!
    • 1.Qxb2+?
      • 1...Kf5
        • 2.Qxf6#
        • 2.d4#
      • 1...d4!
    • 1.Qc7+?
      • 1...Kf5
        • 2.d4#
      • 1...Kd4!
    • 1.Qb8+?
      • 1...Kf5
        • 2.d4#
      • 1...Kd4!
    • 1.d4+?
      • 1...cxd4
        • 2.Bb8#
        • 2.Qc7#
        • 2.Qb8#
      • 1...Kxd4!
  • Keys
    • 1.Qb4!
      • 1...Kf5
        • 2.d4#
      • 1...cxb4
        • 2.d4#
      • 1...d4
        • 2.Qxc5#
      • 1...c4
        • 2.d4#
      • 1...g4
        • 2.Qf4#
      • 1...f5
        • 2.Bb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(d);P-FLIGHT::B(A)+P(B)
    • P(b);N_GUARD::P(B)
  • Tries
    • Try
      • B(G);XP(b)
      • Threat
        • P(B)
      • Vars
        • K(d);P-FLIGHT::B(A)+P(B)
      • Refutation
        • P(c);
    • Try
      • B(G);CHECK
      • Vars
        • K(d);P-FLIGHT::B(A)+P(B)
      • Refutation
        • K(d);S_FLIGHT
    • Try
      • Q(H);CHECK,XP(a)
      • Refutation
        • P(c);P_SPINP(c)
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);P-FLIGHT::B(A)+P(B)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • Q(H);CHECK
      • Vars
        • K(d);P-FLIGHT::B(A)+P(B)
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT
    • Try
      • P(B);CHECK
      • Refutation
        • K(d);P_SPINP(b),S_FLIGHT,XP(B)
  • Actual
    • Q(H);
    • Vars
      • K(d);P-FLIGHT::B(A)+P(B)
      • P(b);N_GUARD,XQ(H)::P(B)
      • P(c);OGATEB::QAR2(H),XP(b)
      • P(b);N_GUARD::P(B)
      • P(e);N_GUARD::QAB1(H)
      • P(f);SBLOCK::B(G)
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