MESON Chess Problem Database

Problem Display
PID: 4739 (8/8/5p2/8/3pk3/1B4P1/3Q4/5K2 w - - 0 1)

Wurzburg, Otto

Sunny South, 1889

8/8/5p2/8/3pk3/1B4P1/3Q4/5K2

#2

4 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Qf4#
    • 1...Ke5
      • 2.Qf4#
    • 1...d3
      • 2.Qf4#
    • 1...f5
      • 2.Qe2#
  • Tries
    • 1.Kf2?
      • 1...Ke5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
      • 1...f5
        • 2.Qe2#
      • 1...Kf5!
    • 1.Kg2?
      • 1...Ke5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
      • 1...f5
        • 2.Qe2#
      • 1...Kf5!
    • 1.Ba2?
      • 1...Kf3
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
      • 1...f5
        • 2.Qe2#
      • 1...Kf5!
    • 1.Bc4?
      • threat
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kf5!
    • 1.Be6?
      • threat
        • 2.Qe2#
      • 1...Kf3
        • 2.Qf4#
        • 2.Qd3#
      • 1...d3
        • 2.Qf4#
      • 1...Ke5!
    • 1.Bg8?
      • 1...Kf3
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
      • 1...f5
        • 2.Qe2#
      • 1...Kf5!
    • 1.Qf2?
      • 1...Ke5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
      • 1...f5
        • 2.Qe2#
      • 1...Kd3!
  • Keys
    • 1.Bf7!
      • 1...Kf3
        • 2.Qf4#
      • 1...Ke5
        • 2.Qf4#
      • 1...Kf5
        • 2.Qf4#
      • 1...d3
        • 2.Qf4#
      • 1...f5
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);S_FLIGHT::QAR1(B)
    • K(b);P-FLIGHT::QAB1(B)
    • P(a);SBLOCK::QAR1(B)
    • P(c);SBLOCK::QAR2(B)
  • Tries
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR1(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR1(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
        • K(b);P-FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR1(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);
      • Threat
        • QAR1(B)
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
        • K(b);P-FLIGHT::QAB1(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(C);
      • Threat
        • QAR2(B)
      • Vars
        • P(a);SBLOCK::QAR1(B)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • B(C);
      • Vars
        • K(b);S_FLIGHT::QAR1(B)
        • K(b);P-FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR1(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);P-FLIGHT::QAB1(B)
        • P(a);SBLOCK::QAR1(B)
        • P(c);SBLOCK::QAR2(B)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • B(C);
    • Vars
      • K(b);S_FLIGHT::QAR1(B)
      • K(b);P-FLIGHT::QAB1(B)
      • P(a);SBLOCK::QAR1(B)
      • P(c);SBLOCK::QAR2(B)
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