MESON Chess Problem Database

Problem Display
PID: 224626 (1K6/4p3/3pk1B1/4P3/1N2p3/2Q1p3/4P3/8 w - - 0 1)

Phelps, Francis Bradley

Newark Sunday Call, 1888

1K6/4p3/3pk1B1/4P3/1N2p3/2Q1p3/4P3/8

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd7
      • 2.Qc8#
    • 1...dxe5
      • 2.Qc6#
  • Tries
    • 1.Kb7?
      • 1...Kd7
        • 2.Qc8#
      • 1...dxe5
        • 2.Qc6#
      • 1...d5!
    • 1.Kc7?
      • 1...dxe5
        • 2.Qc6#
      • 1...d5!
    • 1.Kc8?
      • 1...dxe5
        • 2.Qc6#
      • 1...d5!
    • 1.Sd3?
      • 1...Kd5
        • 2.Sf4#
      • 1...Kd7
        • 2.Qc8#
      • 1...dxe5
        • 2.Qc6#
      • 1...d5
        • 2.Sc5#
        • 2.Qc6#
        • 2.Qc8#
      • 1...exd3!
    • 1.Sd5?
      • 1...Kd7
        • 2.Qc8#
      • 1...dxe5
        • 2.Qc6#
      • 1...Kxd5!
    • 1.Qc4+?
      • 1...Kd7
        • 2.Qc8#
      • 1...d5
        • 2.Qxd5#
      • 1...Kxe5!
    • 1.Qc5?
      • 1...Kd7
        • 2.Qc8#
      • 1...dxe5
        • 2.Qc6#
      • 1...d5
        • 2.Qxd5#
      • 1...dxc5!
  • Keys
    • 1.Sa6!
      • 1...Kd5
        • 2.Sc7#
      • 1...Kd7
        • 2.Qc8#
      • 1...dxe5
        • 2.Qc6#
      • 1...d5
        • 2.Sc5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(d);S_FLIGHT::QAB1(B)
    • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
  • Tries
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(d);S_FLIGHT::QAB1(B)
        • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • K(F);S_FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • K(F);P-FLIGHT
      • Vars
        • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
      • Refutation
        • P(c);
    • Try
      • S(C);
      • Vars
        • K(d);S_FLIGHT::S(C)
        • K(d);S_FLIGHT::QAB1(B)
        • P(c);OGATEB,XP(D)::QAR2(B)
      • Refutation
        • P(b);XS(C)
    • Try
      • S(C);
      • Vars
        • K(d);S_FLIGHT::QAB1(B)
        • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
      • Refutation
        • K(d);S_FLIGHT,XS(C)
    • Try
      • Q(B);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(B)
        • P(c);P_SPINP(c)::QAB1(B),XP(c)
      • Refutation
        • K(d);P-FLIGHT,XP(D)
    • Try
      • Q(B);
      • Vars
        • K(d);S_FLIGHT::QAB1(B)
        • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
        • P(c);::QAB1(B),XP(c)
      • Refutation
        • P(c);XQ(B)
  • Actual
    • S(C);
    • Vars
      • K(d);S_FLIGHT::S(C)
      • K(d);S_FLIGHT::QAB1(B)
      • P(c);OGATEB,SBLOCK,XP(D)::QAR2(B)
      • P(c);N_GUARD,SBLOCK::S(C)
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