MESON Chess Problem Database

Problem Display
PID: 17560 (8/8/2KR4/2ppk3/2r5/5Q2/8/8 w - - 0 1)

Drese, Gerardus Hendrikus

Sjakk-Nytt, 1947

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

#2

3 + 4

5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Rxd5#
    • 1...Re4
      • 2.Qf6#
    • 1...Rf4
      • 2.Qxd5#
  • Tries
    • 1.Re6+?
      • 1...Kd4
        • 2.Qe3#
      • 1...Kxe6!
  • Keys
    • 1.Kd7!
      • threat
        • 2.Rxd5#
      • 1...Kd4
        • 2.Rxd5#
      • 1...Rf4
        • 2.Qxd5#
      • 1...Rd4
        • 2.Re6#
      • 1...Re4
        • 2.Qf6#
      • 1...d4
        • 2.Rd5#
        • 2.Re6#

Anticipated by 19319(1939)

This anticipates 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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