MESON Chess Problem Database

Problem Display
PID: 147035 (3BB3/b1N5/pR1K2pr/k4rR1/8/2pP4/n1b2Q2/8 w - - 0 1)

Vaughan, Colin V

The Problemist, 1977

3BB3/b1N5/pR1K2pr/k4rR1/8/2pP4/n1b2Q2/8

#2

8 + 9

1085 Australian Chess Problem Magazine 1995

SOLUTION

  • SOUND
  • Sets
    • 1...Rc5
      • 2.Qxc5#
    • 1...Rd5+
      • 2.Rxd5#
    • 1...Re5
      • 2.Rxe5#
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qc5#
      • 1...Rxd5+
        • 2.Rxd5#
      • 1...Rf6+
        • 2.Sxf6#
      • 1...Bb8+
        • 2.Rxb8#
      • 1...Rxf2
        • 2.Sf4#
      • 1...Bxd3
        • 2.Qxa2#
      • 1...Ba4
        • 2.Rb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::QAR2(A),XR(e)
    • R(e);CHECK,OGATE::R(C),XR(e)
    • R(e);OGATE::R(C),XR(e)
  • Actual
    • S(F);N_PINR(e)
    • Threat
      • QAR2(A)
    • Vars
      • R(e);CHECK,OGATE,P_SPINR(e),XS(F)::R(C),XR(e)
      • R(e);CHECK::R(C)+S(F),XR(e)
      • B(i);CHECK,N_GUARD::B(G)+R(D),XB(i)
      • R(e);XQ(A)::R(C)+S(F)
      • B(b);OGATE,XP(B)::QAR(A),XS(a)
      • B(b);SBLOCK::B(G)+R(D),DCHECK
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