MESON Chess Problem Database

Problem Display
PID: 129693 (8/2P1k1BP/1K4p1/6p1/2P5/7Q/8/8 w - - 0 1)

Prokopovski, B

Bohemia, 1902

8/2P1k1BP/1K4p1/6p1/2P5/7Q/8/8

#2

6 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd6
      • 2.c8S#
    • 1...Kf7
      • 2.Qd7#
    • 1...Ke8
      • 2.Qe6#
  • Tries
    • 1.Kc5?
      • 1...Kf7
        • 2.Qd7#
      • 1...Ke8
        • 2.Qe6#
      • 1...g4!
    • 1.Kc6?
      • threat
        • 2.Qd7#
      • 1...Kf7
        • 2.Qd7#
      • 1...Ke8
        • 2.Qe6#
        • 2.Qd7#
      • 1...g4!
    • 1.c5?
      • 1...Kf7
        • 2.Qd7#
      • 1...Ke8
        • 2.Qe6#
      • 1...g4!
    • 1.c8Q?
      • threat
        • 2.Qhe6#
        • 2.Qhd7#
        • 2.Qcd7#
        • 2.Qf8#
      • 1...Kd6
        • 2.Qhe6#
        • 2.Qhd7#
        • 2.Qce6#
        • 2.Qcd7#
        • 2.Qa3#
        • 2.Qc5#
        • 2.Qc7#
        • 2.Qd8#
        • 2.Qf8#
      • 1...Kf7
        • 2.Qhd7#
        • 2.Qcd7#
        • 2.Qf8#
      • 1...g4!
    • 1.c8S+?
      • 1...Kf7
        • 2.Qd7#
      • 1...Kd8
        • 2.h8Q#
        • 2.h8R#
      • 1...Ke8!
    • 1.c8B?
      • threat
        • 2.Qd7#
      • 1...Kd6
        • 2.Qe6#
        • 2.Qd7#
        • 2.Qa3#
      • 1...Kf7
        • 2.Qd7#
      • 1...Kd8
        • 2.Qd7#
      • 1...Ke8
        • 2.Qd7#
      • 1...g4!
    • 1.h8Q?
      • threat
        • 2.Qf8#
      • 1...Kd6
        • 2.Bf8#
        • 2.Qd8#
        • 2.Qf8#
        • 2.c8S#
      • 1...Kf7
        • 2.Qd7#
        • 2.Qf8#
      • 1...g4!
    • 1.h8S?
      • 1...Kd6
        • 2.c8S#
      • 1...Ke8
        • 2.Qe6#
      • 1...g4!
    • 1.h8R?
      • 1...Kd6
        • 2.c8S#
      • 1...Kf7
        • 2.Qd7#
      • 1...g4!
  • Keys
    • 1.Qg4!
      • 1...Kd6
        • 2.c8S#
      • 1...Kf7
        • 2.Qd7#
      • 1...Ke8
        • 2.Qe6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::P=S
    • K(c);P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • K(C);P-FLIGHT
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • P(B);
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • P(D);
      • Threat
        • DUALS(4)
      • Refutation
        • P(a);
    • Try
      • P(D);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • K(c);S_FLIGHT::P=Q
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • P(D);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • K(c);S_FLIGHT::QAR1(A)
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • P(a);
    • Try
      • P(F);
      • Threat
        • QAB1(F)
      • Refutation
        • P(a);
    • Try
      • P(F);
      • Vars
        • K(c);S_FLIGHT::P=S
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);
    • Try
      • P(F);
      • Vars
        • K(c);S_FLIGHT::P=S
        • K(c);P-FLIGHT::QAR2(A)
      • Refutation
        • P(a);
  • Actual
    • Q(A);
    • Vars
      • K(c);S_FLIGHT::P=S
      • K(c);P-FLIGHT::QAR2(A)
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