MESON Chess Problem Database

Problem Display
PID: 16680 (R7/bk6/2Rp4/8/K7/8/2Q5/8 w - - 0 1)

Mott-Smith, Geoffrey

Chess Correspondent, 1942

R7/bk6/2Rp4/8/K7/8/2Q5/8

#2

4 + 3

2012 Miniature Chess Problems from Many Countries 1981
3295 Einfuhrung in die Welt des Schachproblem 1984
5454 Near Snap 2009
3713 Snap 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Rb6+?
      • 1...Kxa8
        • 2.Qc6#
      • 1...Bxb6
        • 2.Qc8#
      • 1...Kxb6!
    • 1.Rc7+?
      • 1...Ka6
        • 2.Qc6#
      • 1...Kb6
        • 2.Qc6#
      • 1...Kxa8!
    • 1.Rcc8?
      • threat
        • 2.Qc6#
      • 1...Ka6
        • 2.Qc6#
      • 1...Kb6
        • 2.Qc6#
      • 1...Bc5!
  • Keys
    • 1.Ra6!
      • threat
        • 2.Qc6#
        • 2.Qc8#
      • 1...Kxa6
        • 2.Qc6#
      • 1...Kxa8
        • 2.Qc8#
      • 1...Bc5
        • 2.Qh7#
      • 1...Bb6
        • 2.Qc8#
      • 1...Bb8
        • 2.Qc6#

Anticipated by 121008(0000), 121425(1907)

This anticipates 107158(1966)

FEATURES

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