MESON Chess Problem Database

Problem Display
PID: 18497 (8/1K4p1/1R6/2k4r/4Q3/8/8/6b1 w - - 0 1)

Speckmann, Werner

Die Schwalbe, 1956

8/1K4p1/1R6/2k4r/4Q3/8/8/6b1

#2

3 + 4

5454 Near Snap 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qb4#
    • 1...Bd4
      • 2.Qc6#
  • Tries
    • 1.Ka6?
      • threat
        • 2.Rc6#
      • 1...Bd4
        • 2.Qc6#
      • 1...Rd5
        • 2.Qb4#
      • 1...Rh6!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Rb5#
      • 1...Bd4
        • 2.Qb5#
      • 1...Rd5
        • 2.Qc3#

This anticipates 263694(2009)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::QAB1(A)
    • B(a);SBLOCK::QAR1(A)
  • Tries
    • Try
      • K(C);S_FLIGHT
      • Threat
        • R1(B)
      • Vars
        • B(a);SBLOCK::QAR1(A)
        • R(c);SBLOCK::QAB1(A)
      • Refutation
        • R(c);P_PINR(B)
  • Actual
    • Q(A);
    • Threat
      • R1(B)
    • Vars
      • B(a);SBLOCK::QAR1(A)
      • R(c);SBLOCK::QAR2(A)
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