MESON Chess Problem Database

Problem Display
PID: 232379 (8/8/8/8/1p6/1K6/1B2p3/3kb1Q1 w - - 0 1)

Speckmann, Werner

Deutsche Schachzeitung, 1979

8/8/8/8/1p6/1K6/1B2p3/3kb1Q1

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Qd4#
  • Tries
    • 1.Ba1?
      • 1...Kc1
        • 2.Qxe1#
      • 1...Kd2!
    • 1.Ba3?
      • 1...Kd2
        • 2.Qd4#
      • 1...bxa3!
    • 1.Bc3?
      • threat
        • 2.Qxe1#
      • 1...Kc1
        • 2.Qxe1#
      • 1...bxc3!
    • 1.Bd4?
      • 1...Kc1
        • 2.Qxe1#
      • 1...Kd2!
    • 1.Be5?
      • 1...Kc1
        • 2.Qxe1#
      • 1...Kd2!
    • 1.Bf6?
      • 1...Kc1
        • 2.Qxe1#
      • 1...Kd2!
    • 1.Bg7?
      • 1...Kc1
        • 2.Qxe1#
      • 1...Kd2!
    • 1.Bh8?
      • 1...Kc1
        • 2.Qxe1#
      • 1...Kd2!
  • Keys
    • 1.Bc1!
      • 1...Kxc1
        • 2.Qxe1#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINB(b),P-FLIGHT::QAR2(A)
  • Tries
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);N_SPINB(b),P-FLIGHT::QAR2(A)
      • Refutation
        • P(d);XB(B)
    • Try
      • B(B);
      • Threat
        • QAR1(A),XB(b)
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • P(d);XB(B)
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
    • Try
      • B(B);
      • Vars
        • K(a);P-FLIGHT::QAR2(A),XB(b)
      • Refutation
        • K(a);N_SPINB(b),P-FLIGHT
  • Actual
    • B(B);
    • Vars
      • K(a);P-FLIGHT,XB(B)::QAR2(A),XB(b)
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