MESON Chess Problem Database

Problem Display
PID: 181136 (K7/2Bk4/6P1/1R1N4/8/3PP3/2Q5/8 w - - 0 1)

van Dijk, Johannes

De Maasbode, 1904

K7/2Bk4/6P1/1R1N4/8/3PP3/2Q5/8

#2

8 + 1

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kc8
      • 2.Sb6#
  • Tries
    • 1.Bh2?
      • 1...Ke6
        • 2.Qc8#
      • 1...Ke8
        • 2.Qc8#
      • 1...Kd8!
    • 1.Bg3?
      • 1...Ke6
        • 2.Qc8#
      • 1...Ke8
        • 2.Qc8#
      • 1...Kd8!
    • 1.Bf4?
      • 1...Ke6
        • 2.Qc8#
      • 1...Ke8
        • 2.Qc8#
      • 1...Kd8!
    • 1.Bb8?
      • 1...Ke6
        • 2.Qc8#
      • 1...Ke8
        • 2.Qc8#
      • 1...Kd8!
    • 1.Qf2?
      • 1...Ke6
        • 2.Qf7#
      • 1...Kc8
        • 2.Qf5#
      • 1...Ke8
        • 2.Qf7#
      • 1...Kc6!
    • 1.Qc4?
      • 1...Ke6
        • 2.Qg4#
      • 1...Kc8
        • 2.Sb6#
        • 2.Qg4#
      • 1...Ke8!
    • 1.Qc5?
      • 1...Kc8
        • 2.Sb6#
      • 1...Ke8
        • 2.Sf6#
        • 2.Qe7#
      • 1...Ke6!
    • 1.Qc6+?
      • 1...Kc8
        • 2.Sb6#
        • 2.Se7#
        • 2.Ba5#
        • 2.Bb6#
        • 2.Rb8#
        • 2.Qe8#
        • 2.Qe6#
      • 1...Kxc6!
    • 1.e4?
      • 1...Ke6
        • 2.Qc6#
      • 1...Kc8
        • 2.Sb6#
      • 1...Ke8!
  • Keys
    • 1.Qa4!
      • 1...Kc6
        • 2.Ra5#
      • 1...Ke6
        • 2.Qg4#
      • 1...Kc8
        • 2.Rb8#
        • 2.Qg4#
      • 1...Ke8
        • 2.Rb8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • K(a);S_FLIGHT::S(E)
  • Tries
    • Try
      • B(G);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • B(G);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
        • K(a);S_FLIGHT::QAR2(A)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::QAB(A)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);
      • Vars
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);S_FLIGHT,XQ(A)
    • Try
      • P(C);
      • Vars
        • K(a);S_FLIGHT::QAR2(A)
        • K(a);S_FLIGHT::S(E)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(a);S_FLIGHT::QAB(A)+R(D)
      • K(a);S_FLIGHT::QAB(A)
      • K(a);S_FLIGHT::QAB(A)+R(D),DCHECK
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