MESON Chess Problem Database

Problem Display
PID: 207530 (8/1p6/4PKp1/6p1/3pk1p1/QP4P1/5B2/5B2 w - - 0 1)

Martindale, Frank W

Chess Problems - Martindale, FW, 1872

8/1p6/4PKp1/6p1/3pk1p1/QP4P1/5B2/5B2

#2

7 + 6

162 Land and Water 1873
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Bg2#
    • 1...d3
      • 2.Bg2#
    • 1...b5
      • 2.Qa8#
    • 1...b6
      • 2.Qa8#
  • Tries
    • 1.Bg1?
      • 1...Kd5
        • 2.Bg2#
      • 1...d3
        • 2.Bg2#
      • 1...b5
        • 2.Qa8#
      • 1...b6
        • 2.Qa8#
      • 1...Kf3!
    • 1.Qc5?
      • 1...d3
        • 2.Bg2#
      • 1...b5
        • 2.Qc6#
      • 1...b6
        • 2.Qc6#
      • 1...Kf3!
    • 1.Qd6?
      • 1...d3
        • 2.Bg2#
        • 2.Qxd3#
      • 1...b5
        • 2.Qc6#
      • 1...b6
        • 2.Qc6#
      • 1...Kf3!
    • 1.Qe7?
      • threat
        • 2.Qxb7#
      • 1...Kd5
        • 2.Bg2#
      • 1...b5
        • 2.Qb7#
      • 1...b6
        • 2.Qb7#
      • 1...Kf3!
    • 1.Qa2?
      • 1...Kf3
        • 2.Qe2#
      • 1...d3
        • 2.Bg2#
      • 1...b5
        • 2.Qa8#
      • 1...b6
        • 2.Qa8#
      • 1...Kd5!
    • 1.Qa5?
      • 1...b5
        • 2.Qa8#
      • 1...d3
        • 2.Bg2#
      • 1...b6
        • 2.Qa8#
      • 1...Kf3!
    • 1.e7?
      • 1...Kd5
        • 2.Bg2#
      • 1...d3
        • 2.Bg2#
      • 1...b5
        • 2.Qa8#
      • 1...b6
        • 2.Qa8#
      • 1...Kf3!
  • Keys
    • 1.Qf8!
      • 1...Kf3
        • 2.Ke5#
      • 1...Kd5
        • 2.Bg2#
      • 1...d3
        • 2.Bg2#
      • 1...b5
        • 2.Qa8#
      • 1...b6
        • 2.Qa8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::B(A)
    • P(a);SBLOCK::B(A)
    • P(f);OGATEB::QAB(C)
  • Tries
    • Try
      • B(B);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(a);SBLOCK::B(A)
        • P(f);OGATEB::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);SBLOCK::B(A)
        • P(f);N_GUARD::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(f);N_GUARD::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAB(C),XP(f)
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(f);::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);S_FLIGHT::QAB1(C)
        • P(a);SBLOCK::B(A)
        • P(f);OGATEB::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(f);OGATEB::QAB(C)
        • P(a);SBLOCK::B(A)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(F);
      • Vars
        • K(b);S_FLIGHT::B(A)
        • P(a);SBLOCK::B(A)
        • P(f);OGATEB::QAB(C)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(C);
    • Vars
      • K(b);S_FLIGHT::QAR(C)+K(G)
      • K(b);S_FLIGHT::B(A)
      • P(a);SBLOCK::B(A)
      • P(f);OGATEB::QAB(C)
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