MESON Chess Problem Database

Problem Display
PID: 19319 (8/2KR4/2ppk3/2r5/5Q2/8/8/8 w - - 0 1)

Speckmann, Werner

Kieler Neueste Nachrichten, 1939

8/2KR4/2ppk3/2r5/5Q2/8/8/8

#2

3 + 4

3098 FIDE Album (1914-1944) (I) 1971
3295 Einfuhrung in die Welt des Schachproblem 1984
2838 Fun with Chess Miniatures 1996
3310 2345 Chess Problems 1997
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kd5
      • 2.Rxd6#
    • 1...Re5
      • 2.Qf7#
    • 1...Rf5
      • 2.Qxd6#
  • Tries
    • 1.Re7+?
      • 1...Kd5
        • 2.Qe4#
      • 1...Kxe7!
  • Keys
    • 1.Kd8!
      • threat
        • 2.Rxd6#
      • 1...Kd5
        • 2.Rxd6#
      • 1...Rf5
        • 2.Qxd6#
      • 1...Rd5
        • 2.Re7#
      • 1...Re5
        • 2.Qf7#
      • 1...d5
        • 2.Rd6#
        • 2.Re7#

This anticipates 17560(1947), 172211(1996)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINP(c),S_FLIGHT::R1(C),XP(c)
    • R(a);SBLOCK::QAB1(A)
    • R(a);SBLOCK::QAR1(A),XP(c)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
      • Refutation
        • K(d);P-FLIGHT,XR(C)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • R1(C),XP(c)
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::R1(C),XP(c)
      • R(a);SBLOCK::QAR1(A),XP(c)
      • R(a);SBLOCK::R1(C)
      • R(a);SBLOCK::QAB1(A)
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