MESON Chess Problem Database

Problem Display
PID: 10487 (r3k3/b5R1/8/5K2/8/8/8/Q7 w q - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1965

r3k3/b5R1/8/5K2/8/8/8/Q7

#2

3 + 3

3295 Einfuhrung in die Welt des Schachproblem 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Bg1
      • 2.Qxa8#
    • 1...Bf2
      • 2.Qxa8#
    • 1...Be3
      • 2.Qxa8#
    • 1...Bd4
      • 2.Qxa8#
    • 1...Bc5
      • 2.Qxa8#
  • Tries
    • 1.Rb7?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Bd4
        • 2.Qxa8#
      • 1...Bc5
        • 2.Qxa8#
      • 1...0-0-0!
    • 1.Rc7?
      • threat
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Bd4
        • 2.Qxa8#
      • 1...Bc5
        • 2.Qxa8#
      • 1...Kd8!
    • 1.Rh7?
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...Bd4
        • 2.Qxa8#
      • 1...Bc5
        • 2.Qxa8#
      • 1...0-0-0!
    • 1.Qe5+?
      • 1...Kf8
        • 2.Qe7#
      • 1...Kd8!
    • 1.Qa2?
      • threat
        • 2.Qg8#
      • 1...Kd8
        • 2.Qg8#
      • 1...Kf8
        • 2.Qf7#
        • 2.Qg8#
      • 1...Bc5
        • 2.Qxa8#
      • 1...0-0-0!
    • 1.Qa3?
      • threat
        • 2.Qe7#
      • 1...Kd8
        • 2.Qf8#
      • 1...Bc5
        • 2.Qxa8#
      • 1...0-0-0!
    • 1.Qa4+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8!
    • 1.Qxa7?
      • threat
        • 2.Rg8#
        • 2.Qe7#
        • 2.Qxa8#
      • 1...Kd8
        • 2.Rg8#
        • 2.Qd7#
        • 2.Qxa8#
      • 1...Kf8
        • 2.Qe7#
        • 2.Qf7#
      • 1...0-0-0
        • 2.Rc7#
        • 2.Qb7#
        • 2.Qc7#
        • 2.Qa8#
      • 1...Rb8
        • 2.Rg8#
        • 2.Qxb8#
        • 2.Qe7#
      • 1...Rc8
        • 2.Rg8#
        • 2.Qe7#
      • 1...Rd8
        • 2.Rg8#
        • 2.Qe7#
        • 2.Qf7#
      • 1...Rxa7!
  • Keys
    • 1.Qh1!
      • threat
        • 2.Qh8#
      • 1...Kd8
        • 2.Qh8#
      • 1...Kf8
        • 2.Qh8#
      • 1...0-0-0
        • 2.Qb7#
      • 1...Bc5
        • 2.Qxa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • B(a);OGATE::QAR(A),XR(b)
  • Tries
    • Try
      • R(C);
      • Threat
        • QAR(A)
      • Vars
        • K(c);P-FLIGHT::QAR(A)
        • K(c);P-FLIGHT::QAR2(A)
        • B(a);OGATE::QAR(A),XR(b)
      • Refutation
        • K(c);0-0-0
    • Try
      • R(C);
      • Threat
        • QAR(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • B(a);OGATE::QAR(A),XR(b)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • QAR(A)
      • Vars
        • K(c);P-FLIGHT::QAR(A)
        • K(c);P-FLIGHT::QAR2(A)
        • B(a);OGATE::QAR(A),XR(b)
      • Refutation
        • K(c);0-0-0
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAB1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR2(A)
      • Vars
        • K(c);P-FLIGHT::QAR(A)
        • B(a);OGATE::QAR(A),XR(b)
      • Refutation
        • K(c);0-0-0
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • B(a);OGATE::QAR(A),XR(b)
      • Refutation
        • K(c);0-0-0
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);XB(a)
      • Threat
        • DUALS(3)
      • Refutation
        • R(b);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • K(c);P-FLIGHT::QAR(A)
      • K(c);P-FLIGHT::QAR2(A)
      • K(c);0-0-0,OGATEB::QAB1(A)
      • B(a);N_GUARD::QAR(A),XR(b)
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