MESON Chess Problem Database

Problem Display
PID: 78978 (1K3B2/1R5b/2p1p3/p1Pkp2Q/Rb2n3/N7/4N3/1r1qr3 w - - 0 1)

Vaughan, Colin V

The Tablet, 1961

(First published on Sat Feb 11 1961)

1K3B2/1R5b/2p1p3/p1Pkp2Q/Rb2n3/N7/4N3/1r1qr3

#2

8 + 11

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Sf4#
    • 1...Bd2
      • 2.Rd4#
    • 1...Bxa3
      • 2.Sf4#
    • 1...Bc3
      • 2.Sf4#
    • 1...Bxc5
      • 2.Sf4#
  • Keys
    • 1.Qf3!
      • threat
        • 2.Rd7#
      • 1...Bxa3
        • 2.Sc3#
      • 1...Bxc5
        • 2.Sc3#
      • 1...Bd2
        • 2.Qd3#
      • 1...Bc3
        • 2.Sxc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • Q(b);SBLOCK::S(A)
    • B(d);OGATE,P_PINR(F)::R1(C)
    • B(d);P_PINR(F),XS(B)::S(A)
    • B(d);P_PINR(F)::S(A)
    • B(d);P_PINR(F),XP(D)::S(A)
  • Actual
    • Q(E);N_PINP(h),P_PINS(e)
    • Threat
      • R(F)
    • Vars
      • B(d);N_GUARD,P_PINR(F),XS(B)::S(A)
      • B(d);N_GUARD,P_PINR(F),XP(D)::S(A)
      • B(d);P_PINR(F),S_CUTQ(b)::QAR2(E)
      • B(d);N_GUARD,P_PINR(F)::S(A),XB(d)
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