MESON Chess Problem Database

Problem Display
PID: 107158 (Rb2K3/1k6/2R2Q2/2p5/8/8/8/8 w - - 0 1)

Buchwald, Julius

De Waarheid, 1966

Rb2K3/1k6/2R2Q2/2p5/8/8/8/8

#2

4 + 3

5454 Near Snap 2009
6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rca6?
      • threat
        • 2.Qc6#
      • 1...Kc7
        • 2.Qc6#
      • 1...Kc8
        • 2.Qc6#
      • 1...Bd6!
    • 1.Rb6+?
      • 1...Kc7
        • 2.Qd8#
        • 2.Qc6#
      • 1...Kc8
        • 2.Qd8#
        • 2.Qc6#
      • 1...Kxa8!
    • 1.Rc7+?
      • 1...Kxa8
        • 2.Qf3#
        • 2.Qc6#
      • 1...Bxc7
        • 2.Qa6#
      • 1...Kxc7!
  • Keys
    • 1.Rc8!
      • threat
        • 2.Qa6#
        • 2.Qc6#
      • 1...Kxa8
        • 2.Qa6#
      • 1...Kxc8
        • 2.Qc6#
      • 1...Bd6
        • 2.Qb2#
      • 1...Ba7
        • 2.Qc6#
      • 1...Bc7
        • 2.Qa6#

Anticipated by 121008(0000), 121425(1907), 16680(1942)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(A);
      • Threat
        • QAB1(B)
      • Vars
        • K(b);P-FLIGHT::QAR1(B)
        • K(b);P_SPINB(c),S_FLIGHT::QAR2(B)
      • Refutation
        • B(c);
    • Try
      • R(A);CHECK
      • Refutation
        • K(b);S_FLIGHT,XR(C)
    • Try
      • R(A);CHECK
      • Vars
        • B(c);SBLOCK,XR(A)::QAB1(B)
      • Refutation
        • K(b);P-FLIGHT,XR(A)
  • Actual
    • R(A);
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P_SPINB(c),S_FLIGHT,XR(C)::QAR2(B)
      • K(b);P_SPINB(c),S_FLIGHT,XR(A)::QAR2(B)
      • B(c);::QAR(B)
      • B(c);::QAB1(B)
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