MESON Chess Problem Database

Problem Display
PID: 750 (Q7/2B4B/KN2N1r1/2pP1nr1/Rbn1k1P1/2P1p1P1/b3P3/8 w - - 0 1)

Vaughan, Colin V

1st Prize, British Chess Magazine, 1948

Q7/2B4B/KN2N1r1/2pP1nr1/Rbn1k1P1/2P1p1P1/b3P3/8

#2

12 + 9

3105 FIDE Album (1945-1955) 1964
56 The Problemist 2002
56 The Problemist 2007
56 The Problemist 2012
23 Die Schwalbe 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe6
      • 2.dxe6#
    • 1...Rf6
      • 2.Sxg5#
    • 1...Rh6
      • 2.Sxg5#
    • 1...Ba5
      • 2.Sxc5#
    • 1...Sb2
      • 2.Sxc5#
    • 1...Sd2
      • 2.Sxc5#
    • 1...Sa3
      • 2.Sxc5#
    • 1...Sa5
      • 2.Sxc5#
    • 1...Se5
      • 2.Sxc5#
    • 1...Sxb6
      • 2.Sxc5#
    • 1...Sxg3
      • 2.Sxg5#
    • 1...Sd4
      • 2.Sxg5#
    • 1...Sh4
      • 2.Sxg5#
    • 1...Sh6
      • 2.Sxg5#
    • 1...Se7
      • 2.Sxg5#
    • 1...Sg7
      • 2.Sxg5#
  • Tries
    • 1.Rxb4?
      • threat
        • 2.Sxc5#
      • 1...Rxe6
        • 2.dxe6#
      • 1...cxb4
        • 2.Sc5#
      • 1...Sd6!
  • Keys
    • 1.Sd7!
      • threat
        • 2.d6#
      • 1...Sxg3
        • 2.Sf6#
      • 1...Rg8
        • 2.Sf6#
      • 1...Sb2
        • 2.Sxc5#
      • 1...Sd2
        • 2.Sxc5#
      • 1...Sa3
        • 2.Sxc5#
      • 1...Sa5
        • 2.Sxc5#
      • 1...Se5
        • 2.Sxc5#
      • 1...Sb6
        • 2.Sexc5#
        • 2.Sdxc5#
      • 1...Scd6
        • 2.Sexc5#
      • 1...Sd4
        • 2.Sf6#
      • 1...Sh4
        • 2.Sf6#
      • 1...Sfd6
        • 2.Sxg5#
      • 1...Sh6
        • 2.Sf6#
      • 1...Se7
        • 2.Sf6#
      • 1...Sg7
        • 2.Sf6#

There are these versions: 174711, 174712, 174713

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 6
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(i);OGATE,P_PINS(H),P_SPINS(g),XS(I)::QAB(L)+P(F),XR(i)
    • R(i);N_GUARD,P_SPINS(g)::S(I),XR(h)
    • B(c);N_GUARD,P_SPINS(d)::S(I),XP(f)
    • S(d);P_SPINB(c)::S(I),XP(f)
    • S(d);P_SPINB(c),XS(H)::S(I),XP(f)
    • S(g);P_SPINR(i),XP(C)::S(I),XR(h)
    • S(g);P_SPINR(i)::S(I),XR(h)
  • Tries
    • Try
      • R(D);P_PINS(d),XB(c)
      • Threat
        • S(I),XP(f)
      • Vars
        • R(i);OGATE,P_PINS(H),XS(I)::QAB(L)+P(F),XR(i)
        • P(f);N_SPINS(d),XR(D)::S(I)
      • Refutation
        • S(g);P_SPINR(i)
  • Actual
    • S(H);P_SPINS(I)
    • Threat
      • QAB(L)+P(F)
    • Vars
      • S(g);P_SPINR(i),XP(C)::S(H)
      • R(i);N_GUARD,N_PINS(I),P_SPINS(g)::S(H)
      • S(d);P_SPINB(c)::S(H),XP(f)
      • S(d);N_PINS(I),P_SPINB(c)::S(I),XP(f)
      • S(g);P_SPINR(i)::S(H)
      • S(g);N_PINS(I),P_SPINR(i)::S(I),XR(h)
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Developed and maintained by Brian Stephenson.
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