MESON Chess Problem Database

Problem Display
PID: 64189 (nB6/pQn4K/rp2P3/bp1N1BkN/1p2P1Pp/1P2P2P/8/8 w - - 0 1)

Zappas, Byron

3rd Prize, Scacco!, 1979

nB6/pQn4K/rp2P3/bp1N1BkN/1p2P1Pp/1P2P2P/8/8

#2

12 + 10

3750 FIDE Album (1977-1979) 1984

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd5
      • 2.Qg7#
    • 1...Sxe6
      • 2.Qe7#
    • 1...Se8
      • 2.Bf4#
  • Tries
    • 1.Sc3?
      • 1...Sxe6
        • 2.Qe7#
      • 1...Sd5
        • 2.Qg7#
      • 1...Se8
        • 2.Bf4#
      • 1...bxc3!
    • 1.Sxb4?
      • 1...Sxe6
        • 2.Qe7#
      • 1...Sd5
        • 2.Qg7#
      • 1...Se8
        • 2.Bf4#
      • 1...Bxb4!
    • 1.Sdf4?
      • 1...Sxe6
        • 2.Sxe6#
        • 2.Qe7#
      • 1...Sd5
        • 2.Qg7#
      • 1...Se8!
    • 1.Sdf6?
      • 1...Sd5
        • 2.Qg7#
      • 1...Se8
        • 2.Bf4#
      • 1...Sxe6!
    • 1.Sg3?
      • 1...Sxd5
        • 2.Qg7#
      • 1...Sxe6
        • 2.Qe7#
      • 1...Se8
        • 2.Bf4#
      • 1...hxg3!
    • 1.Shf4?
      • 1...Sxd5
        • 2.Qg7#
      • 1...Sxe6
        • 2.Sxe6#
        • 2.Qe7#
      • 1...Se8!
    • 1.Shf6?
      • 1...Sxd5
        • 2.Qg7#
      • 1...Se8
        • 2.Bf4#
      • 1...Sxe6!
    • 1.Sg7?
      • 1...Sxe6
        • 2.Sxe6#
        • 2.Qe7#
      • 1...Se8
        • 2.Bf4#
      • 1...Sxd5!
    • 1.Qc8?
      • threat
        • 2.Qd8#
        • 2.Qg8#
      • 1...Sxd5
        • 2.Qg8#
      • 1...Se8
        • 2.Bf4#
      • 1...Sxe6!
    • 1.Qxa7?
      • 1...Sxd5
        • 2.Qg7#
      • 1...Sxe6
        • 2.Qe7#
      • 1...Se8
        • 2.Bf4#
      • 1...Rxa7!
    • 1.e5?
      • 1...Sxd5
        • 2.Qg7#
      • 1...Sxe6
        • 2.Qe7#
      • 1...Se8!
  • Keys
    • 1.Bg6!
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Sxe6
        • 2.Qe7#
      • 1...Se8
        • 2.Bf4#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(i);OGATE,XS(F)::QAR2(J)
    • S(i);OGATE,XP(I)::QAB(J)
    • S(i);OGATE::B(L)
  • Tries
    • Try
      • S(F);
      • Vars
        • S(i);OGATE,XP(I)::QAB(J)
        • S(i);OGATE::QAR2(J)
        • S(i);OGATE::B(L)
      • Refutation
        • P(a);XS(F)
    • Try
      • S(F);XP(a)
      • Vars
        • S(i);OGATE,XP(I)::QAB(J)
        • S(i);OGATE::QAR2(J)
        • S(i);OGATE::B(L)
      • Refutation
        • B(c);XS(F)
    • Try
      • S(F);
      • Vars
        • S(i);OGATE::QAR2(J)
      • Refutation
        • S(i);
    • Try
      • S(F);
      • Vars
        • S(i);OGATE::QAR2(J)
        • S(i);OGATE::B(L)
      • Refutation
        • S(i);XP(I)
    • Try
      • S(H);
      • Vars
        • S(i);OGATE,XS(F)::QAR2(J)
        • S(i);OGATE,XP(I)::QAB(J)
        • S(i);OGATE::B(L)
      • Refutation
        • P(b);XS(H)
    • Try
      • S(H);
      • Vars
        • S(i);OGATE,XS(F)::QAR2(J)
      • Refutation
        • S(i);
    • Try
      • S(H);
      • Vars
        • S(i);OGATE,XS(F)::QAR2(J)
        • S(i);OGATE::B(L)
      • Refutation
        • S(i);XP(I)
    • Try
      • S(H);
      • Vars
        • S(i);OGATE::B(L)
      • Refutation
        • S(i);XS(F)
    • Try
      • Q(J);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);XS(F)::QAR(J)
        • S(i);OGATE::B(L)
      • Refutation
        • S(i);XP(I)
    • Try
      • Q(J);XP(h)
      • Vars
        • S(i);OGATE,XS(F)::QAR2(J)
        • S(i);OGATE,XP(I)::QAB(J)
        • S(i);OGATE::B(L)
      • Refutation
        • R(f);XQ(J)
    • Try
      • P(D);
      • Vars
        • S(i);OGATE,XS(F)::QAR2(J)
        • S(i);OGATE,XP(I)::QAB(J)
      • Refutation
        • S(i);
  • Actual
    • B(G);
    • Vars
      • S(i);OGATE,XS(F)::QAR(J),XS(i)
      • S(i);OGATE,XP(I)::QAB(J)
      • S(i);OGATE::B(L)
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