MESON Chess Problem Database

Problem Display
PID: 232397 (8/5Q2/5n2/3p1k1B/3K4/6B1/8/8 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1984

8/5Q2/5n2/3p1k1B/3K4/6B1/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kg5
      • 2.Qg6#
  • Tries
    • 1.Kc3?
      • 1...Ke4
        • 2.Qe6#
      • 1...Kg5
        • 2.Qg6#
      • 1...d4+!
    • 1.Kd3?
      • 1...Kg5
        • 2.Qg6#
      • 1...d4!
    • 1.Ke3?
      • 1...Kg5
        • 2.Qg6#
      • 1...d4+!
    • 1.Be1?
      • 1...Kf4
        • 2.Qxf6#
      • 1...Kg5!
    • 1.Bf2?
      • 1...Kf4
        • 2.Qxf6#
      • 1...Kg5!
    • 1.Bg4+?
      • 1...Kg5
        • 2.Qg7#
      • 1...Kxg4!
  • Keys
    • 1.Bh4!
      • 1...Kf4
        • 2.Qxf6#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINS(c),P-FLIGHT::QAR1(D)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);N_SPINS(c),S_FLIGHT::QAR2(D)
        • K(b);N_SPINS(c),P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);CHECK
    • Try
      • K(B);P-FLIGHT
      • Vars
        • K(b);N_SPINS(c),P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(b);N_SPINS(c),P-FLIGHT::QAR1(D)
      • Refutation
        • P(a);CHECK
    • Try
      • B(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(D),XS(c)
      • Refutation
        • K(b);N_SPINS(c),P-FLIGHT
    • Try
      • B(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(D),XS(c)
      • Refutation
        • K(b);N_SPINS(c),P-FLIGHT
    • Try
      • B(C);CHECK
      • Vars
        • K(b);N_SPINS(c),P-FLIGHT::QAR2(D)
      • Refutation
        • K(b);N_SPINS(c),S_FLIGHT,XB(C)
  • Actual
    • B(A);
    • Vars
      • K(b);P-FLIGHT::QAR2(D),XS(c)
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